Math Blog 841 (2008)

HARBECK, ILL MISS YOU

2009-07-28T02:51:00.003-05:00

Dear Mr. Harbeck, I will really miss grade eight math, I'll really miss your loud teaching and everything else you do. I'll especially miss this blog, the one I always visited after school or when I was bored. This method that you use for the internet.. for math was really fun and enjoyable. I guess I'll just basically miss grade eight and all the fun and wonders it held, all the teachers.. and those events or whatever they are called that keep us all occupied and busy. Like Pay It Forward, that Four Charities thing.. you know. Movies.. it was really fun. The grade sevens and nines are always asking me why we weren't in class during this day or that day, and I would simply say.. "we were doing blahblahballh" and they would say "how come we didn't do that last year?" I loved grade eight and I'll miss it. I hope your summers fine btw! Love fuzzy.

My year in Grade 8

2009-06-12T10:16:00.002-05:00

My year in Grade 8 was short. It was not really a year it was only 3 months and then in the next school year i will be grade 9. Sargent Park school here in Canada was a lot different than schools in the Philippines. Reason is everything is free, but except for food. There was no free lockers, so you have to carry all your books and notebooks all the way. Even papers are not free, you have to pay for the price and the xerox of the paper given to you. There is expensive tuition fee, and it was not worth it. Here in Canada, schools have technology, which is I want. We always write on paper, but here I have the chance to write with a computer and to experience high speed internet. Technology, that's what it is.

Math was great its like going back to grade 6. But some of it I already forgot, so i still have to learn it again. I don't like algebra, not just the basics, even the advance in algebra. It's like solving the slope of 3x -3 = 8, and then graph. But problems like that is a bit easy for me, I already forgot the hard problems, Maybe because math gives me

My Year in Grade 8

2009-06-12T10:14:00.005-05:00

My year in Grade 8, well its not actually a year just a few months like 2-3 months. I feel lucky to finish Grade 8 for a few months, but those few months are still important. Its important because it gave experience me in a school in Canada. Grade 8 is like a training for Grade 9, because in Grade 9 I will be graded. Math is easier here, in the Philippines 1st year high school which is Grade 7 here we are studying algebra an some equations will took you a page to show your solution. So when I studied algebra here it will be a lot easier. But still some subjects are advanced such as Social Studies.

In conclusion my Grade 8 is great just like back home

My Year in Grade 8

2009-06-12T10:12:00.000-05:00

Jayden's Percent Post

2009-06-01T17:25:00.008-05:00

245% of $356.80

68 3/4% of 730

360% of $129.95

182% of 1700 mg

63% of 4900

Ronnil's Percent Post

2009-06-01T17:24:00.000-05:00

Aleks's Percent Post

2009-06-01T07:59:00.003-05:00

Here are two questions from Friday. ( * = division sign )

a)Miguel bought a car for $4700. He mad a down payment of 19 1/2%. How muchwas the down payment?

4700 l 100

*100 l *100

47 l 1

x 19.5 l x 19.5

916.5 l 19.5

The down payment was $916.5.

b) About 5.6% of Canadians have Type 2 diabetes. If Canada's population is 32 million, how many Canadians have this condition?

32 000 000 l 100

*100 l *100

320 000 l 1

x 5.6 l x 5.6

1 792 000 l 5.6

1 792 000 Canadians have this condition.

Tracys Percent Post

2009-05-31T22:07:00.008-05:00

1) 245% of $356.80

2) 68 3/4% of 730

3) 360% of $129.95

5) The 4900 seat hockey arenas was 63% full. How many people were at the game?

There was 3087 people at the game.

2. Table Salt is a chemical compound of sodium and chlorine. recommended daily intake is about 1700 mg. If Canadians consume 182% of this amount on average, how much sodium is one person eating daily?

One person eats 3094 soduim daily.

Arielle's Percent Post

2009-05-31T21:54:00.002-05:00

1) 245% of $356.80

2) 68 3/4% of 730

3) 360% of $129.95

2) Table Salt is a chemical compound of sodium and chlorine. recommended daily intake is about 1700 mg. If Canadians consume 182% of this amount on average, how much sodium is one person eating daily?

5) The 4900 seat hockey arenas was 63% full. How many people were at the game?

Hanbit's Percent Post

2009-05-31T19:59:00.003-05:00

245% of $356.80 = 874.160
(I didn't really get this one.. sorry :S)

683/4 (68.75) of 730
= 501.875

360% of $129.95
= 467.820

The 4900 seat hockey arena was 63% full.
How many people are at the game?
3087 people were at the game.

Table salt is a chemical compound of sodium and chlorine. Recommended daily intake is about 1700mg. If Canadians consume 182% of this amount on average, how many sodium is one person eating daily?
One person is eating 3094mg daily.

Jordan's Percent Post

2009-05-31T19:40:00.008-05:00

Questions from Part A.

(Sorry that this one's upside-down.. don't know why it did that.)

Questions from Part B.

The 4900 seat hockey arenas was 63% full. How many people were at the game?

The Nile River is about 209% the length of the Yukon River. If the Yukon River is 3168 km, how long is the Nile river to the Nearest KM?

Carrie's Percent Post

2009-05-31T19:14:00.013-05:00

1) 245% of $356.80

2) 68 3/4% of 730

3) 360% of $129.95

2) Table Salt is a chemical compound of sodium and chlorine. recommended daily intake is about 1700 mg. If Canadians consume 182% of this amount on average, how much sodium is one person eating daily?

5) The 4900 seat hockey arenas was 63% full. How many people were at the game?

Maeddah's Percent Post

2009-05-31T18:50:00.011-05:00

ALL QUESTIONS FROM PART A
1) 245% of $356.80

2) 68 3/4% of 730

3) 360% of $129.95

ALL QUESTIONS FROM PART 2

5) The 4900 seat hockey arenas was 63% full. How many people were at the game?

There was 3087 people at the game.

3)Miguel bought a car for $4700. He made a down payment of 19 1/2%. How much was the down payment?

The down payment was $916.5.

Sean's Percent Post

2009-05-31T14:23:00.009-05:00

c) 245% of $356.89

d) 68 3/4% of 730

e) 360% of 129.95

7 c) The 4900-seat hockey arena was 63% full. How many people were at the game?

8) The Nile River is about 209% the length of the Yukon River. If the Yukon River is 3168 km, how long is the Nile River (to the nearest km)?

Melanee's Percent post

2009-05-31T13:25:00.019-05:00

1) 245% of $356.80

2) 68 3/4% of 730

I don't get this one soorrry!

3) 360% of $129.95

4) The Nile River is about 209% the length of the Yukon River. If the Yukon River is 3168 km, how long is the Nile river to the Nearest KM? Show your work.

5) Table Salt is a chemical compound of sodium and chlorine. recommended daily intake is about 1700 mg. If Canadians consume 182% of this amount on average, how much sodium is one person eating daily?

Sorry if i got any of these Questions WRONG

Gelli's Percent Post

2009-05-30T14:37:00.025-05:00

1) 245% of $356.80

2) 68 3/4% of 730

3) 360% of $129.95

Part B:
2) Table Salt is a chemical compound of sodium and chlorine. recommended daily intake is about 1700 mg. If Canadians consume 182% of this amount on average, how much sodium is one person eating daily?

5) The 4900 seat hockey arenas was 63% full. How many people
were at the game?

UofR Regina, Sk.

2009-05-24T22:17:00.001-05:00

Hi everyone,
I am Tiffany, a fourth year university student at the University of Regina. I am studying to be a Math and Science teacher, so when I finish up at university in two years I will be looking for my own classroom to teach Math in. I am excited to check out your blogs and read about what you are learning and also to see how math makes it onto the internet with your help. To be honest, I have never heard of a math blog before, because when I was in Grade 8 there wasn't such a thing. But I think it is a great idea! Well, I think this tells a little bit about me and where I am at in my education. Looking forward to seeing your work! Cheers.

Hanbit's 2 Minutes to Make a Difference

2009-05-21T21:57:00.003-05:00

For our video, we did it on poverty. At first, it was supposed to be Canadian Poverty, but we were so into the project that we did it on the world instead. It was really fun to work in a group with my friends because we were working well with each other. I really liked this project and how our video turned out. I liked watching the other videos too because it was really funny.

Casey's 2 Minutes to Make a Difference

2009-05-21T08:34:00.007-05:00

Our group chose Global Warming as our topic. The reason we chose Global Warming is that it's very effective to our environment and if it continues then it can cause our planet to die out.

Sutchai's 2 Minutes to Make a Difference

2009-05-21T00:21:00.008-05:00

This video is created by MACS: Michelle, Arielle, Carrie, and Sutchai. It's about poverty today and the effects it causes. It also shows ways you can help prevent poverty and to help make a difference in the world. Hope you appreciate our hard work and the effort we put into it. Please sit back, relax, and enjoy the video!

Ron's 2 Minutes To Make A Difference

2009-05-20T22:38:00.002-05:00

This is a video Sean and I made about Pollution and how we could help the environment around us. This explains how we could keep the place around us clean and how we should treat the world. If everything is messy and isn't taken care of then the world wouldn't live anymore longer and we would all die. So, I hope you this video will encourage you to not do the things that are bad for the environment. Enjoy!

Clarence's 2 Minutes to make a Difference

2009-05-20T22:28:00.004-05:00

This is a Video that ( Clarence, Jayden, Jayzie and Terryl ) made a bout global warming.
What people are doing to cause global warming and the climate change that make global warming and we need alot of people to take a stand and help stop global warming and stop causing it.
It talks about whats happening to the earth and so please people.
Take a stand and do something about it !!

(GAAP) Gelli's 2 Minutes to Make a Difference

2009-05-20T22:26:00.003-05:00

This video was made by me (Gelli), Tracy, Hanbit and Maeddah. This video is about Canadian poverty and how people (people in poverty) in Canada suffer and get their lives affected by it. As you know, we really enjoyed our time into making this video for you so that somehow this video could inspire you in a way that this convinces you to help and stop poverty here in Canada. We hope that this video has touched you guys in a good way, like it has touched us. So, please think of how you can help us stop poverty and take action so that we could really end poverty here in Canada! Okay well enjoy our video! (:

Carrie's 2 Minutes To Make A Difference

2009-05-20T22:21:00.003-05:00

GAAP's 2 Minutes To Make A Difference

2009-05-20T22:05:00.005-05:00

This video was made by Gelli, Hanbit, (Tracy) and Maeddah. This video is about Canadian Poverty and it shows what people are going through. And how it affects many other people all around the world. We hope that this video has touched you guys like how it touched us while we made it. Please think how you can stop poverty and take action. Well here's are video, enjoy it.

GAAP's (Maeddah's) 2 Minutes To Make A Difference

2009-05-20T21:47:00.002-05:00

This is the video made by Gelli, Hanbit, Tracy and Maeddah. It is talking about Canadian Poverty and how it affects many people all around the world. We hope that it makes you and puts a great impression on you, just like how it did on us while we made it. Enjoy!

Btw, we kind of messed up on the song, we didn't realize until it was too late. And we got carried away with Poverty, we didn't just take you to Poverty in Canada, we took you all around the world and taught you all different kinds of Poverty. Haha, but still.. enjoy! :)

Song:
Arms of An Angel - Sarah Mclachlan

Arielle's 2 Minutes To Make A Difference

2009-05-20T21:31:00.003-05:00

This video is created by Michelle, Carrie, Sutchai, and I also known as "MACS." Our video shows the effects of poverty and how we can help prevent it. In other words, it shows how we can make a difference in the world today. I hope it influences you in a positive way to take some action. The credits go by really fast, but we had to do that because of the maximum time. Overall, I really enjoyed working on this project with MACS, putting our time, hard work and effort into it. I hope it sends out the message to you all! Please comment and tell us what you think. Enjoy our video (:

Sean's 2 Minutes to Make a Difference

2009-05-20T17:00:00.002-05:00

Our video is about pollution and how it affects the world, its people, and animals. It shows different kinds of pollution and its bad side. The video tells you how to stop pollution and bad things if we don't, and it encourages older people to get young people to take action.

Michelle's 2 Minutes To Make a Difference

2009-05-20T08:29:00.005-05:00

This video, is made by Michelle(me), Arielle, Carrie and Sutchai. It's about Poverty and how you can Stand up, take action, speak out, and Make Poverty History! The video tells you facts about poverty and convincing pictures you will see that will make you have a different impression on things. We hope that we showed you what it's like to live in poverty and how to try to stop it.

Joseph's 2 Minutes to Make a Difference

2009-05-19T19:07:00.007-05:00

This was a Vietboyz Production(Joseph, Liem, Kevin and Vincent).
Our video was about what obesity can do to you, how to get rid of obesity and what not to do. It was trying to get people to stop their bad habits and to become healthy, or to make someone help someone they know has a problem. It also talks about the good things that come with obesity. Please enjoy and take action!

Aleks' Last Fractions post

2009-05-13T07:57:00.004-05:00

Adding Fractions:

1- Find the common denominator.

2- Add both numerators then add both denominators.

3- Simplify if you can.

e.g.:

1/2 + 1/4=

2/4 + 1/4= 3/4

Adding Mixed Numbers:
1- Convert mixed numbers into improper fractions.
2- Find the common denominator.
3- Add both numerators and then add both denominators.
4- Convert improper fraction to mixed number.
5- Simplify if you can.

e.g.:

1 1/2 + 1 1/3=

3/2 + 4/3=

9/6 + 8/6= 17/6 = 2 5/6

Subtracting Fractions:
1- Find common denominators.
2- Subtract numerators and leave the denominator as it is.
3- Simplify if you can.

e.g.:

1/2 - 3/4=

2/4 - 3/4= 1/4

Multiplying Fractions:
1- Find common denominator.
2- Multiply both numerators and multiply both denominators.
3- Simplify if you can.

e.g.:

2/3 x 3/4=

8/12 x 9/12= 72/12 = 6

Multiplying Mixed Numbers:
1- Convert mixed numbers to improper fractions.
2- Find common denominator.
3- Multiply both numerators and then multiply both denominators.
4- Simplify if you can

e.g.:

1 1/2 x 1 2/4=

3/2 x 6/4= 18/4 = 4 2/4

Dividing Fractions:
1- Find the reciprocal of one of the fractions.
2- Multiply both of the numerators and then multiply both of the denominators.
3- Simplify if you can

e.g.:

4/8 * 2/4=

4/8 x 4/2= 16/16 = 1<-----the answer

2/4 x 4/2= 1

Dividing Mixed Numbers:
1- Convert mixed numbers to improper fractions.
2- Find the reciprocal of one of the fractions.
3- Multiply both numerators and then multiply both denominators.
4- Simplify if you can

e.g.:

1 2/3 * 1 1/2=

5/3 * 3/2=

5/3 x 2/3= 10/9 = 1 1/9<-----the answer

3/2 x 2/3= 1

Casey's Last Fraction Post

2009-05-11T22:54:00.022-05:00

Adding Question 1:

When you add fractions the easiest way to do it is if you find the common denominators.Once you find the common denominator than you can add the numerators and fiond your answer.

Adding Question 2:

Subtracting Question 1:

When you subtract fractions the easiast way to do it is also find the common denominator.The common denominator helps you because you wont need to subtract the denominators anymore,only the numerators.

Multiplying 1:

When multiplying Fractions all you need to do is multiply the denominators and then multiply the numerators.

Multiplying 2:

Multiplying 3:

4/6 x 2/4 = 8/24

4x2=8

6x4=24

Dividing Question 1:

When you Divide fractions the easiest way to do it is to use the Reciprical. The Reciprical is the fraction in reverse.Any time you use it, the answer should equal to one.

Dividing Question 2:

Dividing Question 3:

Word Problem:

2) It takes 2 1/4 scoops of flour to make one cake. How many cakes do 15 scoops make?

15 scoops will make 6 1/2 cakes.

Maeddah's Last Fraction Post

2009-05-11T22:33:00.001-05:00

Jordan's Last Fraction Post

2009-05-11T22:02:00.017-05:00

Adding Fractions

To add fractions, you must first find the common denominator. This is usually the sum of the two denomainators multiplied. The common denominator below is 10. Then you figure out how many times the denominator of the first fraction goes into the numerator of the fraction below. Then you times that number by the numerator of the top fraction. As shown on the picture, 2 goes into 10 5 times, and 5 times 1 is 5. Use this same rule for the other fraction(s). When you get the numerators of the remaining two fractions, add them to get the final answer.

Adding Mixed Numbers

When adding Mixed Numbers, you can add the fractions first. Use the same rule above to do this, except make the sum of the two added fractions into a mixed number. When this is finished just add the whole numbers from the question to the mixed number to get your final answer.

Subtracting Fractions

To subtract fractions, you must again find the common denominator. Then use the same rule that you used for adding fractions. (How many times does the denominator go into the denominator, then times by the numerator) and subtract the wholes.

Multiplying Fractions

Multiplying fractions is probably the easiest. All you must do is multiply the numerators and the denominators, then simplify if possible.

Multiplying Mixed Fractions

Same goes for multiplying normal fractions, except you must convert the mixed numbers to improper fractions, then multiply and simplify.

Dividing Fractions

When dividing fractions, you first have to find the reciprocal. This is the fraction on the right flipped upside-down in order to turn a fraction into 1. You then times this reciprocal by the left fraction.

Dividing Mixed Fractions

Same as above.

Problem 2.

It takes 2 1/4 scoops of flour to make one cake.

How many cakes do 15 scoops of flour make?

15 scoops of flour make 6 2/3 cakes.

Problem 3.

One day in Winnipeg with 10 1/2 hours of daylight, it was sunny for 1/3 of that time. For how many hours was it sunny that day?

It was sunny for 3 1/2 hours that day.

Hanbit's Last Fraction Post

2009-05-11T21:57:00.004-05:00

This was all done in my voicethread .. Yeah, no voice. Sorry if it's confusing but I tried my best.

Sutchai's Last Fraction Post

2009-05-11T21:37:00.011-05:00

Adding Fractions:

1. Find common denominator.

2. Add both numerators and then add both denominators.

3. Simplify if it's possible.

Adding Mixed Numbers:
1. Convert mixed numbers to improper fractions.
2. Find common denominator.
3. Add both numerators and then add both denominators.
4. Convert improper fraction to mixed number.
5. Simplify if it's possible.

Subtracting Fractions:
1. Find common denominators.
2. Subtract numerators and leave the denominator as it is.
3. Simplify if it's possible.

Multiplying Fractions:
1. Find common denominator.
2. Multiply both numerators and then multiply both denominators.
3. Simplify if it's possible.

Multiplying Mixed Numbers:
1. Convert mixed numbers to improper fractions.
2. Find common denominator.
3. Multiply both numerators and then multiply both denominators.
4. Simplify if it's possible.

Dividing Fractions:
1. Find the reciprocal of one of the fractions.
2. Multiply both of the numerators and then multiply both of the denominators.
3. Simplify if it's possible.

Dividing Mixed Numbers:
1. Convert mixed numbers to improper fractions.
2. Find the reciprocal of one of the fractions.
3. Multiply both numerators and then multiply both denominators.
4. Simplify if it's possible.

Tracy's Last Fraction Post

2009-05-11T21:28:00.011-05:00

Adding Fractions:
1st : Find a common denominator.
2nd : Add the numerator to a numerater.
3rd : Add the denominator to a denominator.
Last : Simplify it. (only if possible)

Subtracting Fractions:
1st : Find a common denominator.
2nd : Subtract the numerator to a numerator.
3rd : Subtract the denominator to a denominator.
Last : Simplify it. (only if possible)

Adding Mixed Numbers:
1st : Convert the mixed numbers into improper fractions.
2nd : Fina a common denominator.
3rd : Add the numerator to a numerator.
4th : Add the denominator to a denominator.
5th : Convert the answer into a mixed number.
Last : Simplify it. (only if possible)

Multiplying Fractions:
1st : Multiply the numerator to a numerator.
2nd : Multiply denominator to a denominator.
Last : Simplify it. (only if possible)

Multiplying Mixed Numbers:
1st : Convert any of the mixed numbers into improper fractions.
2nd : Multiply the numerator to a numerator.
3rd : Multiply the denominator with a denominator.
4th : Convert the answer into a mixed number.
Last : Simplify it. (only if possible)

Dividing Fractions:
1st : Find the reciprical. (one of the fractions upside down)
2nd : Multiply the numerator to a numerator.
3rd : Multiply the denominator to a denominator.
4th : Convert the fraction into a mixed fraction.
Last : Simplify it. (only if possible)

Dividing Mixed Numbers:
1st : Convert the mixed numbers into improper fractions.
2nd : Find the reciprical. (one of the fractions upside down)
3rd : Multiply the numerator to a numerator.
4th : Multiply the denominator to a denominator.
5th : Convert the answer into a mixed number.
Last : Simplify it. (only if possible)

Problem #2
It takes 2 1/4 scoops of flour to make one cake. How many cakes do 15 schoops of flour make?

Problem #3

One day in WInnipeg with 10 1/2 hours of daylight, it was sunny for 1/3 of that time. For how many hours was it sunny that day?

Carrie's Last Fraction Post

2009-05-11T20:50:00.013-05:00

The first thing you have to do when adding fractions is to find the common denominator. Then you add together the numerators and add the denominators together. The last step is optional, you reduce or simplify your answer (the fraction) if you can.

When you're adding mixed fractions you can add just the whole numbers right away or you can convert the mixed fraction into a improper fraction. Once you've done that you have to find the common denominator, and then add all the numerators together and the denominators together. If you converted your mixed fraction into a improper fraction for your first step, you will have an improper fraction as your answer. You shouldn't have an improper fraction as an answer, so convert it into a mixed fraction. The last step is to reduce or simply your answer if you can.

Subtracting fractions. The first thing you're going to do is to find the common denominator. The second thing you have to do is to subtract all numerators together and all or the denominators together. And the last thing you have to do is to reduce your answer or simply it if you can.

Multiplying fractions is the easiest! All you have to do is to multiply numerator by numerator and the denominator by denominator, and reduce your answer if you can.

Multiplying mixed fractions is almost the same as multiplying proper fractions, except you have to convert the mixed fractions into improper fractions. You do the same thing, like in multiplying proper fractions where you multiply numerator by numerator and denominator by denominator. Then you have to simply reduce or simplify your answer and convert it into a mixed fraction.

When you divide fractions you have to find the reciprocal (the reciprocal is the fraction fliped up-side-down, what makes it a whole number.) Then use multiplication, multiply the numerators and denominators together. Reduce if you can.

The first thing you have to do when dividing mixed fraction is to convert any mixed fractions into improper fractions. Then do the same first 2 steps in the previous explanation, then you convert it into a mixed fraction. If you can, reduce or simplify your answer.

I chose to do problem 2 & 3

Michelle's Last Fraction Post

2009-05-11T19:55:00.008-05:00

ADDING FRACTIONS:

- First make the denominators the same by multiplying the denominators together, or finding the number that they can both go into.
- Add numerator to numerator and denominator to denominator
- You could simplify if the numerator and denominator are not prime numbers

SUBTRACTING FRACTIONS:

- First make the denominators the same by multiplying the denominators together, or finding the number that they can both go into.
- Subtract numerator to numerator and denominator to denominator
- You could simplify if the numerator and denominator are not prime numbers

MULTIPLYING FRACTIONS:

Multiplying proper fractions:
- Multiply numerator to numerator and denominator to denominator
- Simplify if answer is not a prime number

Multiplying mixed fractions:
- Convert mixed fractions to improper fractions
- Multiply numerator to numerator and denominator to denominator
- Simplify if answer is not a prime number

DIVIDING FRACTIONS:
- First you must find the reciprical. The reciprical is one of the fractions upside down.
- Multiply the numerators and denominators
- Convert the fraction into mixed fractions
- Simplify if answer is not a prime number

Dividing mixed fractions:

- Convert mixed fractions into improper fractions
- BE THE BULLY
- Find the reciprical
- Multiply numerator to numerator and denominators to denominators
- Convert answer to mixed fraction

WORD PROBLEMS:

Ronnil's Last Fraction Post

2009-05-11T19:19:00.014-05:00

Adding Fractions

Subracting Fractions

When subracting mixed numbers, the first thing you do is turn the fractions into improper fractions. Next, you find the lowest common denominator. Once you have the LCD, subtract the numerators and keep the denominator. Lastly, you must simplify the fraction.

Multiplying Fractions

Dividing Fractions

Problem 2
It takes 2 1/4 scoops of flour to make one cup? How many cakes do 15 scoops of flour make?

You could make 6 6/9 or 6 2/3 or cake with 15 scoops.

Problem 3
One day in Winnipeg with 10 1/2 hours of daylight, it was sunny for 1/3 of the time. For how many hours was it sunny that day?

It was 3 1/2 hours sunny that day.

Arielle's Last Fraction Post

2009-05-11T19:18:00.011-05:00

Adding Fractions

[1] Find the LOWEST COMMON DENOMINATOR

[2] Add up the numerators with the new denominator

[3] Simplify fraction

Adding Mixed Numbers
[1] Convert the mixed numbers into IMPROPER FRACTIONS
[2] Find the lowest common denominator
[3] Add up the numerators with the new denominator

[4] Convert the fraction to a mixed number

[5] Simplify fraction

Subtracting Fractions

[1] Find the lowest common denominator

[2] Subtract the numerators with the new denominator

[3] Simplify fraction

Multiplying Fractions

[1] Multiply the numerators together

[2] Multiply the denominators together

[3] Simplify fraction

Multiplying Mixed Numbers

[1] Convert the mixed numbers into improper fractions

[2] Multiply the numerators together

[3] Multiply the denominators together

[4] Convert the fraction to a mixed number

[5] Simplify fraction

Dividing Fractions

[1] Turn the second fraction into a reciprocal (upside down)

[2] Multiply the first fraction to the second fraction

[3] Convert the fraction to a mixed number

[4] Simplify fraction

Dividing Mixed Numbers

[1] Convert the mixed numbers into improper fractions

[2] Find the reciprocal of the second fraction

[3] Multiply the first fraction to the second fraction

[4] Convert the fraction to a mixed number

[5] Simplify fraction

Problem Two

It takes 2 1/4 scoops of flour to make one cake. How many cakes do 15 scoops of flour make?

Problem Three

One day in WInnipeg with 10 1/2 hours of daylight, it was sunny for 1/3 of that time. For how many hours was it sunny that day?

Krissia's Last Fraction Post

2009-05-11T19:08:00.016-05:00

Adding Fraction

Find the common denominator.
Add the numerator to numerator.
Add the denominator to denominator.
If it can be simplified, simplify it.

Subtracting Fraction

Find the common denominator.
Subtract the numerator to numerator.

Subtract the denominator to denominator.

If it can be simplified, simplify it.

Adding Mixed Fraction

Convert mixed fractions into improper fractions

Find the common denominator.

Add the numerator to numerator.

Add the denominator to denominator.

If it can be simplified, simplify it.

Multiplying Fractions

Multiply the numerator to numerator.

Multiply the denominator to denominator.

If it can be simplified, simplify it.

Multiply Mixed Fractions

Convert mixed fractions into improper fractions.
Multiply the numerator to numerator.

Multiply the denominator to denominator.
If the answer is improper, convert improper fractions into mixed fractions.

If it can be simplified, simplify it.

Dividing Fractions

Find the reciprocal of the fraction (flip one of the fraction).
Change dividing into multiplying.

Multiply the numerator to numerator.
Multiply the denominator to denominator.

If it can be simplified, simplify it.

Dividing Mixed Fractions

Convert mixed fractions into improper fractions.
Find the reciprocal of the fraction (flip one of the fraction).

Change dividing into multiplying.
Multiply the numerator to numerator.

Multiply the denominator to denominator.
If it can be simplified, simplify it.

Problem #2

Problem #3

Sean's last fraction post

2009-05-11T18:08:00.011-05:00

Adding

1/4 + 1/5

First you have to find the common denominator

Then you just add the numerators and simplify if you can

1/6 + 3/4

Multiplying

4/5 x 2/5

All you have to do is multiply the numerators and the denominators

If you are multiplying a mixed fraction first you multiply the denominator with the whole number and add the numerator then multiply the numerators and the denominators.

If you have an improper fraction then you find how many groups of the denominator fit into the numerator

Dividing

1/4 1/8

For dividing you have to use a special technique called a repical.

Subtracting

4/5 - 3/5

subtracting is just like adding. First you find the common denominator. Then you just subtract the numerators.

1/6 - 3/4

If you simplify 4/24 it is 1/6

Word Problems

2) It takes 2 1/4 scoops of flour to make one cake. How many cakes do 15 scoops make?

15 scoops will make 6 1/2 cakes.

3) One day in Winnipeg with 10 1/2 hours of daylight, it was sunny for 1/3 of that time. For how many hours was it sunny that day?

Gelli's Last Fraction Post

2009-05-11T17:03:00.014-05:00

Adding Fractions:

1st step: Find a common denominator.
2nd step: Add the numerator to a numerater
3rd step: Add the denominator to a denominator.
LAST step: Simplify it. (only if possible)

Subtracting Fractions:

1st step: Find a common denominator.
2nd step: Subtract the numerator to a numerator.
3rd step: Subtract the denominator to a denominator.
LAST step: Simplify it. (only if possible)

Adding Mixed Numbers:

1st step: Convert the mixed numbers into improper fractions.
2nd step: Fina a common denominator.
3rd step: Add the numerator to a numerator.
4th step: Add the denominator to a denominator.
5th step: Convert the answer into a mixed number.
LAST step: Simplify it. (only if possible)

Multiplying Fractions:

1st step: Multiply the numerator to a numerator.
2nd step: Multiply denominator to a denominator.
LAST step: Simplify it. (only if possible)

Multiplying Mixed Numbers:

1st step: Convert any of the mixed numbers into improper fractions.
2nd step: Multiply the numerator to a numerator.
3rd step: Multiply the denominator with a denominator.
4th step: Convert the answer into a mixed number.
LAST step: Simplify it. (only if possible)

Dividing Fractions:

1st step: Find the reciprical. (one of the fractions upside down)
2nd step: Multiply the numerator to a numerator.
3rd step: Multiply the denominator to a denominator.
4th step: Convert the fraction into a mixed fraction.
LAST step: Simplify it. (only if possible)

Dividing Mixed Numbers:

1st step: Convert the mixed numbers into improper fractions.
2nd step: Find the reciprical. (one of the fractions upside down)
3rd step: Multiply the numerator to a numerator.
4th step: Multiply the denominator to a denominator.
5th step: Convert the answer into a mixed number.
LAST step: Simplify it. (only if possible)

Word Problems:

Problem # 2:
Problem # 3:

Fractions Word Problems

2009-05-11T08:20:00.004-05:00

The Fractions word problems from a long time ago.

One week, Kristi worked 3 days at a department store for 3 1/2h each day. She was paid $9/h.

A How many hours did Kristi work that week?

3 1/2 x 3/1= 21/2 =10 1/2

Kristi worked 10 and 1/2 hours in the department store.

B How much did Kristi earn that week?

9/1 x 21/2 =189/2 =94 1/2 =$94.50

Jupiter completes about 2 2/5 rotations every 24 hours. How many rotations does Jupiter complete in 1 Earth week?

2 2/5 x 7/1 = 12/5 x 7/1 =84/5 =16 4/5

Jupiter completes 16 4/5 rotations around earth every week

#3
A sailboat is sailing at 8 1/2 km/h. If the weather conditions and the current do not change, how far will the sailboat travel in 1 1/3 h?

8 1/2 x 11/3= 68/6 =11 1/3

The sailboat will travel 11 1/3 km

The distance to Grandma's house is 4/5 of the distance to Uncle Glen's house. If Uncle Glen's house is 3 1/2 hours away, how long will it take to get to Grandma's house if you travel at the same speed?

3 1/2 x 4/5 = 28/10 =2 8/10 =2 4/5

it would take 2 4/5 of an hour to get to grandma's house.

It takes 3/5 of a tank of gas to get to work and back each day. How much gas is used over 5 work days?

3/5 x 5/1 =15/5 =3/1 =3

It would take 3 tanks of gas for every 5 work days.

Owen is 2 1/4 times as old as Robin. When Robin celebrates his 8th birthday, how old will Owen be?

2 1/4 x 8/1= 2/1 x 8/1= 18/1 =18

When Robin is 8 Owen will be 18 years old.

The karate club is arranging a grading for its members. It takes 3 1/4 hours to test a group of 4 candidates. How long will the club need in order to process 3 groups of 4 candidates each?

3 1/4 x 3/1 = 39/4 =9 3/4

The club will spend 9 and 3/4 of an hour grading its members.

Last Fraction Post

2009-05-10T21:10:00.007-05:00

1. Add and subtracting fractions isn’t that hard. All you have to do is add (or subtract) the top number and then you write the sum over the common Denominator.

2. Multiplying Fractions isn’t all that hard either. If the Fraction is not in its lowest terms then you must simplify. After that you multiply the numerators to get a new one. Then you do the same to the denominators. If you can simply go for it. Here is a Picture. \/ \/ \/

(sorry that its kind of big)

3. To divide fractions you must flip the divisor. Then you just multiply the fractions. Sounds Easy. Here is a picture. \/ \/ \/

( again sorry that its kind of big)

Joseph's Last Fraction Post

2009-05-10T12:49:00.025-05:00

ADDING:

1) Find the common denomintor

2) Add numerator to numerator and denominator to denominator

3) Simplify if possible

ADDING MIXED NUMBERS:

1) Convert mixed numbers into improper fractions

2) Find a common denominator

3) Add numerator to numerator and denominator to denominator

4) Convert answer into mixed number

5) Simplify if possible

SUBTRACTING FRACTIONS:

1) Find the common denominator

2) Subtract numerator from numerator and denominator from denominator

3) Simplify if possible

MULTIPLYING MIXED NUMBERS:

1) Convert any mixed numbers into improper fractions

2) Multiply numerator with numerator and denominator with denominator

3) Convert answer into mixed number

4) Simplify if possible

MULTIPLYING FRACTIONS:

1) Multiply numerator with numerator and denominator with denominator

2) Simplify if possible

DIVIDING FRACTIONS:

1) Find the reciprocal ( flip one of the fractions upside down)

2) Multiply numerator with numerator and denominator with denominator

3) Simplify if possible

DIVIDING MIXED NUMBERS:

1) Convert mixed numbers into improper fractions

2) Find the reciprocal ( flip one of the fractions upside down)

4) Multiply numerator with numerator and denominator with denominator

5) Convert answer into mixed number

6) Simplify if possible

Jeffs fraction word problems

2009-04-30T07:30:00.003-05:00

Question #1

One week, Kristi worked 3 days at a department store for 3 1/2h each day. She was paid $9/h.

a) How many hours did Kristi work that week?
3 1/2 x 3/1= 21/2
=10 1/2

Kristi worked 10 and 1/2 hours in the department store.

b) How much did Kristi earn that week?
9/1 x 21/2 =189/2
=94 1/2
=$94.50

Question #2:

Jupiter completes about 2 2/5 rotations every 24 hours. How many rotations does Jupiter complete in 1 Earth week?

2 2/5 x 7/1 =
12/5 x 7/1 =84/5
=16 4/5

Jupiter completes 16 4/5 rotations around earth every week

Question #3:

A sailboat is sailing at 8 1/2 km/h. If the weather conditions and the current do not change, how far will the sailboat travel in 1 1/3 h?

8 1/2 x 11/3= 68/6
=11 1/3
The sailboat will travel 11 1/3 km

Question #4:

The distance to Grandma's house is 4/5 of the distance to Uncle Glen's house. If Uncle Glen's house is 3 1/2 hours away, how long will it take to get to Grandma's house if you travel at the same speed?

3 1/2 x 4/5 = 28/10
=2 8/10
=2 4/5

it would take 2 4/5 of an hour to get to grandma's house.

Question #5:

It takes 3/5 of a tank of gas to get to work and back each day. How much gas is used over 5 work days?

3/5 x 5/1 =15/5
=3/1
=3
it would take 3 tank's of gas every 5 work days.

Question #6:

Owen is 2 1/4 times as old as Robin. When Robin celebrates his 8th birthday, how old will Owen be?

2 1/4 x 8/1=
2/1 x 8/1= 18/1
= 18
when Robin is 8 Owen will be 18 yrs old

Question #7:

The karate club is arranging a grading for its members. It takes 3 1/4 hours to test a group of 4 candidates. How long will the club need in order to process 3 groups of 4 candidates each?

3 1/4 x 3/1 = 39/4
=9 3/4

The club will spend 9 and 3/4 of an hour grading its members.

Sutchai's Fraction Word Problems

2009-04-29T22:56:00.002-05:00

6. One week, Kristi worked 3 days at a department store for 3 1/2 h each day. She was paid $9/h.

a) How many hours did Kristi work that week?

b) How much did Kristi earn that week?

7. Jupiter completes about 2 2/5 rotations every 24 hours. How many rotations does Jupiter complete in one Earth week?

8. A sailboat is sailing at 8 1/2 km/h. If the weather conditions and the current do not change, how far will the sailboat travel in 1 1/3 h?

9. The distance to Grandma's house is 4/5 of the distance to Uncle Glen's house. If Uncle Glen's house is 3 1/2 hours away, how long will it take to get to Grandma's house if you travel at the same speed?

10. It takes 3/5 of a tank of gas to get to work and back each day. How much gas is used over 5 work days?

11. Owen is 2 1/4 times as old as Robin. When Robin celebrates his 8th birthday, how old will Owen be?

12. The karate club is arranging a grading for its members. It takes 3 1/4 hours to test a group of 4 candidates. How long will the club need the gym in order to process 3 groups of 4 candidates each?

Maeddah's and Hanbit's Multiplying Fractions

2009-04-29T22:04:00.008-05:00

Question 8

A sailboat is sailing at 8 1/2 km/h. If the weather conditions and the current do not change, how far will the sailboat travel in 1 1/3 h? Show your thinking.

The sailboat will travel 11 2/6 km/h far.

Question 9

The distance to Grandma's house is 4/5 of the distance to Uncle Glen's house. If Uncle Glen's house is 3 1/2 hours awy, how long will it take to get to Grandma's house if you travel at the same speed?

It will take 2 4/5 hours if you travel at the same speed.

Question 10
It takes 3/4 of a tank of gas to get to work and back each day. How much gas is used over 5 days?
3 tanks of gas is used over 5 days.

Question 11

Owen is 2 1/4 times as old as Robin. When Robin celebrates his 8th birthday, how old will Owen be?
Owen will be 18 years old when Robin celebrates his 8th birthday.

I did my question on.. GOOGLE DOCS!

Melanee's and Sequoia's Questions

2009-04-29T18:31:00.011-05:00

6. One week, Kristi worked 3 days at a department store for 31/2 h each day. She was paid $9/h.

a) How many hours did Kristi work that week? Show your thinking.

Kristi worked 10 ½ hours that week.

b) How much did Kristi earn that week?

Kristi earned $94.50 that week.

9. The distance to grandma's house is 4/5 of the distance to uncle Glen's house. If Uncle Glen's house is 3 1 /2 hours away, how long is it going to take to get to Grandma's house's house if you travel at the same speed.

It will take 2 4/5 hours to get to Grandma's house

11. Owen is 2 1/4 times as old as Robin. When Robin celebraed his 8th birthday, how old would Owen be?

12. The karate club is arranging a grading for its members. It takes 3 1/4 hours to test a group of 4 candidates. How long will the club need the gym in the order to process 3 groups of 4 candidates each?

This is all... i hope Sequoia does her part...

Sean and Casey's Fraction Word Problems

2009-04-29T18:02:00.007-05:00

Sean's Questions

6) One week, Kristi worked 3 days at a department store for 3 1/2 hours each day. She was paid $9 an hour.

a) how many hours did Kristi work that week?

b) how much did Kristi earn that week?

7) Jupiter completes about 2 2/5 rotations every 24 hours. How many rotations does Jupiter complete in one Earth week?

12) the karate club is arranging a grading for its members. It takes 3 1/4 hours to test a group of 4 candidates. How long will the club need the gym in order to process 3 groups of 4 candidates each?

Brenden's Math Questions

2009-04-29T17:24:00.004-05:00

Question 1)

A) 3 1/2 x 3/1=

7/2 x 3/1=

=2 1/2

=10 1/2

She worked 10 1/2 hours.

B)9/1 x 2 1/2= 189/2

=94 1/2

94.50

she earned 94.50 $

Question 2)

8 1/2 x 11/3=

17/2 x 4/3= 68/6

=112/6

=11/3

Question 3)

3 1/2 x 4/5

7/2 x 4/5= 28/10
=2 8/10
=2 4/5

It took over 2 4/5 hours to get to grandmas.

Question 4)

3/5 x 5/1= 5/5

=3/1

=3

5 tanks of gas are used over 5 work days.

Jordan's Fraction Word Problems

2009-04-28T20:45:00.010-05:00

Questions:

6. One week, Kristi worked 3 days at a department store for 3 1/2 h each day. She was paid $9/h.

a) How many hours did Kristi work that week? Show your thinking.

3 ½ x 3

3 x 2 + 1 = 7/2

7/2 x 3 = 21/2

21/2=

10 ½

Kristi worked 10 ½ hours that week.

b) How much did Kristi earn that week?

10 ½ x 9 = 94 ½

Kristi earned $94.50 that week.

7. Jupiter completes about 2 2/5 rotations every 24 hours (an Earth day). How many rotations does Jupiter complete in one Earth week? Show your thinking.

2 2/5 = 12/5

12/5 x 7/1 = 16 4/5

Jupiter completes 16 4/5 rotations in one Earth week.

8. A sailboat is sailing at 8 1/2 km/h. If the weather conditions and the current do not change, how far will the sailboat travel in 1 1/3 h? Show your thinking.

8 1/2 x 1/3

17/2 x 4/3 = 68/6 = 11 1/3

The sailboat will travel 11 1/3 km/h.

4/5 x 1/2

4/5 x 7/2 = 28/10

28/10 = 2 4/5

It will take 2 4/5 hours to get to Grandma's house.

10. It takes 3/5 of a tank of gas to get to work and back each day. How much gas is used over 5 work days? Show your thinking.

3/5 x 5/1 = 15/5

15/5 = 3

3 tanks of gas are used over 5 work days.

11. Owen is 2 1/4 times as old as Robin. When Robin celebrates his 8th birthday, how old will Owen be?

1/4 x 8/1

9/4 x 8/1 = 72/4 = 18

Owen will be 18 years old.

1/4 x 3/1

13/4 x 3/1 = 39/9 = 9 3/4

The karate club will need 9 3/4 hours to process 3 groups of 4 candidates.

Ronnie's Fraction Word Problems

2009-04-28T20:31:00.012-05:00

Question 6: One week, Kristi worked 3 days at a department store for 3 1/2h each day. She was paid $9/h.

a) How many hours did Kristi work that week?

b) How much did Kristi earn that week?

Question 7: Jupiter completes about 2 2/5 rotations every 24 hours. How many rotations does Jupiter complete in 1 Earth week?

Question 8: A sailboat is sailing at 8 1/2 km/h. If the weather conditions and the current do not change, how far will the sailboat travel in 1 1/3 h?

Question 9: The distance to Grandma's house is 4/5 of the distance to Uncle Glen's house. If Uncle Glen's house is 3 1/2 hours away, how long will it take to get to Grandma's house if you travel at the same speed?

Question 10: It takes 3/5 of a tank of gas to get to work and back each day. How much gas is used over 5 work days?

Question 11: Owen is 2 1/4 times as old as robin. When Robin celebrates his 8th birthday, how old will Owen be?

Question 12: The karate club is arranging a grading for its members. It takes3 1/4 hours to test a group of 4 candidates. How long will the club need in order to process 3 groups of 4 candidates each?

Tracy and Gelli's Fraction Word Problems

2009-04-28T20:28:00.016-05:00

These are Tracy's questions and answers from our Fraction Word Problems:
Question # 1:
One week, Kristi worked 3 days at a department store for 3 1/2 h each day.
She was paid $9/h.

a) How many hours did Kristi work that week? Show your thinking.

Answer: Kristi worked for 10 1/2 hours that week.

b) How much did Kristi earn that week?

Answer: Kristi earned $94.50 that week.

Question # 2:

Jupiter completes about 2 2/5 rotations every 24 hours (an Earth day.) How many rotations does Jupiter complete in one Earth week? Show your thinking.

Answer: Jupiter completes 16 4/5 rotations around earth in 1 year.

Question # 3:

A sailboat is sailing at 8 1/2 km/h. If the weather conditions and the current do not change, how far will the sailboat travel in 1 1/3 h? Show your thinking.

Answer: The sailboat will travel 11 1/3 km/h.

These are Gelli's questions and answers from our Fraction Word Problems:

Question # 5:
The distance to Grandma's house is 4/5 of the distance to Uncle Glen's house. If Uncle Glen's house is 3 1/2 hours away, how long will it take to get to Grandma's house if you travel at the same speed?

It will take 2 4/5 to get to Grandma's house by traveling at the same speed.

Question # 6:
It takes 3/5 of a tank of gas to get to work and back each day. How much gas is used over 5 work days? Show your thinking.
The amount of gas that is used for 5 work days is 3.

Question # 7:
Owen is 2 1/4 times as old as Robin. When Robin celebrates his 8th birthday, how old will Owen be?
When Robin celebrates his 8th birthday, Owen will be 18 years old.

Question # 8:
The karate club is arranging a grading for its members. It takes 3 1/4 hours to test a group of 4 candidates. How long will the club need the gym in order to process 3 groups of 4 candidates each?
The club will need the gym for 9 3/4 in order to process 3 groups of 4 candidates each.

Krissia's Fraction Word Problems

2009-04-28T19:52:00.014-05:00

6. One week, Kristi worked 3 days at a department store for 3 1/2 h each day. She was paid $9/h. a) How many hours did Kristi work that week? Show your thinking.

Kristi worked for 10 1/2 hours that week.

b) How much did Kristi earn that week?

Kristi earned $94.50 that week.

7. Jupiter completes about 2 2/5 rotations every 24 hours (an Earth day). How many rotations does Jupiter complete in one Earth week? Show your thinking.

Answer: Jupiter completed 16 4/5 rotations in one Earth week.

8. A sailboat is sailing at 8 1/2 km/h. If the weather conditions and the current do not change, how far will the sailboat travel in 1 1/3 h? Show your thinking.

Answer: The sailboat will travel 11 2/6 km/h.

10. It takes 3/5 of a tank of gas to get to work and back each day. How much gas is used over 5 work days? Show your thinking. Answer: 3 tanks of gas are used over 5 work days.

11. Owen is 2 1/4 times as old as Robin. When Robin celebrates his 8th birthday, how old will Owen be? Answer : Owen will be 18 years old.

12. The karate club is arranging a grading for its members. It takes 3 1/4 hours to test a group of 4 candidates. How long will the club need the gym in the order to process 3 groups of 4 candidates each? Answer : The club will need 9 3/4 in order to process 3 groups of 4 candidates.

Joseph's Fraction Word Problems

2009-04-28T19:20:00.015-05:00

Question #1:

One week, Kristi worked 3 days at a department store for 3 1/2h each day. She was paid $9/h.

a) How many hours did Kristi work that week?

b) How much did Kristi earn that week?

Question #2:

Jupiter completes about 2 2/5 rotations every 24 hours. How many rotations does Jupiter complete in 1 Earth week?

Question #3:

A sailboat is sailing at 8 1/2 km/h. If the weather conditions and the current do not change, how far will the sailboat travel in 1 1/3 h?

Question #4:

Question #5:

It takes 3/5 of a tank of gas to get to work and back each day. How much gas is used over 5 work days?

Question #6:

Owen is 2 1/4 times as old as Robin. When Robin celebrates his 8th bday, how old will Owen be?

Question #7:

The karate club is arranging a grading for its members. It takes3 1/4 hours to test a group of 4 candidates. How long will the club need in order to process 3 groups of 4 candidates each?

Skills Assignment Part 2

2009-04-28T16:25:00.006-05:00

Subtracting Integers. This might be the wrong questions but whatever.. At least I did something..

April 23 2009, Scribepost

2009-04-27T00:01:00.013-05:00

Hi you guys! Today is a Sunday, and I'm doing a post for Thursday. Sorry I'm really late. I was caught up, and forgot I had to do a scribe .. Sorry!
We were doing some more fractions today. And the question today was:

Question: Which neighborhood is getting more hardtop than the other? (is there more hardtop in one lot than the other?
How would you convince the people in the two neighborhoods that your conclusion is correct?

I multiplied it like I would when I add two fractions together. Since we're trying to find out which is bigger- 2/5 or 3/4- for the hardtop, I figured it would be easy by finding the common denominator first. A 20 would go into both, so I multiplied 2 by 4 to get 8 and 5 by 4 to get 20. The answer for my first one, was 8/20.

For this one, I multiplied it like I would if I were to add fractions .. again. The answer came out as 15/20. If we compare 8/20 with 15/20- which would be bigger? Obviously 15/20! So, Flatbush has more hardtop space, whereas Carrol Gardens has more playground space.

How would I convince these people? Well, I already showed diagrams, and I think I explained well enough .. :) k, if you don't get it; go to Harbeck's at lunch!
Next scribe .. do I have to pick? Well, if I do have to pick, then I would pick .. RON!

Correction:

I'm sorry. I'm BAD at math, so I got the above answer all wrong! The correction is: You start off with a square that's divided into four, and 3 fourths of it is shaded in. Then, you find out the common denominator! So since the denominator is 20, you divide the square into 20. Since it's now divided, into 5 lines, you shade in 2 parts of it from the 3 fourths that was shaded in. I know this doesn't make sense, I didn't get it either :(

Since this is Flatbush, we divide this one into fifths first, then divide it by 4, into 20. 3 fourths of it is a simplified version of 6/20.

So this means, that FLATBUSH and CARROL GARDENS have equal parking lots!

I think this might help .. o.O

BOB on Fractions

2009-04-22T22:26:00.002-05:00

Hi. So. I'm doing this scribe well, post because I'm sure I did pretty BAD on my math test and I want a bonus mark. So here I go.

Adding Fractions
What I understand about it.. I understand that the rule for addition also appiles to subtraction. I also understand how to add fractions. Here, I'll show you :).
2/4+3/8
the first thing you have to do is look for the denominator that both 4 and 8 go into. Oh, make sure it's the smallest common denominator, so that you don't have to simplify it. The LCD is 4.
So,
2/4+3/8 < question
_/4+_/4 < the blank spots are the numbers we need to figure out.
So, you're probably wondering.. "how do we find those numbers?" This is what you do :). You take 4 and divide it by the denominator in the question. So, 4 divided by 4 is 1. You then multiply the answer you got with the numerator from the question. 1x2=2. So your first fraction is 2/4. To get the last fraction, you do the same thing. You take 4 and divide it by 8, which is 4. Then you multiply 4 with the numerator from the question, which is 12. Your second fraction is 12/4.
.. hmm.. so,
2/4+12/4 is your fraction
all you need to do now is add them together!
2+12=14
and the denominator stays the same because it's already.. the same.
14/4. < this is what you call an improper fraction! You need to fix it and make it into a mixed fraction. You have to find out how much times 14 goes into 4. _x4=a number close to 14? 3! 3x4=12. So 14 can only go into 4 1 time, and what do you have left over? 2. So your fraction would look like this..
12/4, BUT YOU STILL NEED TO SIMPLIFY! Reduce 2/4. 1/2.
FINAL ANSWER
11/2

Subtracting Fractions
For subtracting, you basically do the same thing.. but with the final result, you subtract. :) When you can subtract the fraction, you either need to borrow or turn them into improper fractions.

Problems..
My problems with fractions is that I don't really like them. I always have trouble with them! I got use to them this year though, and they were pretty easy and quick to learn. The only problem is I always mess up on my tests.

skills assignment 1

2009-04-22T10:43:00.000-05:00

Skills Subtracting Fractions Post

2009-04-22T10:32:00.018-05:00

Show 2 different ways to subtract mixed fractions.

1: You can make the numbers into improper fractions like so:
e.g.

2 2/3 - 1 3/4= 8/3 x 7/4

Then you make them equivalent fractions, via multiplying the denminators with eachother, and doing the same with the numerators.

32/12 - 21/12

Then you just do subtraction normally.

32/12 - 21/12= 11/12

You can also carry over from the whole number. But first, make them equivalent.

2 2/3 - 3/4= 2 8/12 - 9/12=

Then you carry over from the whole number and subtract.

1 20/12 - 9/12= 1 11/12

Skills Assignment 2

2009-04-22T10:32:00.015-05:00

This is our Second Skills Scribe Post and it is about converting mixed fractions into improper fractions

Show 2 different ways to subtract mixed numbers:

First Question:

3 1/4 - 1 1/2 =?

You have to convert these fractions into improper fractions because if you subtract these without converting, you will end up with a negative answer.

First you have to find the LCD (lowest common denominator)

Now that we have a common denominator, we multiply the whole number with the denominator and add the left overs

Now we have to do is subtract the fractions

The answer is still improper, so all we have to figure out is how many 4's go into 7

And now the answer is 1 3/4

Second Question:
30 1/6 - 10 3/4 =?

First you find the LCD again

Now we convert 30 2/12 to 29 4/12

Now we have to subtract both fractions

Scribe Post for April 17, 2009

2009-04-19T15:42:00.011-05:00

Hi guys (: THERE'S ONLY 9 MORE DAYS UNTIL THE MUSIC TRIP ! YAAAAY (: Anyways, I'm doing one of the scribes for April 17. I'm going to show you how to do 6 questions from our assignments, and I'm going to the page where it says "Did You Hear About..."

The first question I'm going to do is letter C because it's the first letter of my name! Haha.

Okay so here's the question:

C. 9/10 + 1/2

- First you have to find the common denominator!

The Second question I'm doing is letter F.

Here's the question:
F. 7/10 - 1/5

- The second step is to multiply the numerator with what you multiplied its denominator with then subtract or add the numerators together.

The Third question I'm going to do is letter K

Here it is:
K. 9/16 + 15/16

(This question is really easy!)

- The third step is to reduce the fraction if needed.

The fourth question I'm doing is letter L.

L. 7/10 - 8/15

(I sort of got confused with the subtraction and adding symbols, it's a subtraction question by the way!)

- Review: The first step you have to do is to find the common denominator between the two (or more) denominators. The next step you have to do is to subtract or add the numerators together. And lastly, you have to reduce the fraction if you need to.

The fifth question I'm doing is letter M.

Here's the question:

M. (7/8 - 1/4) + 1/2

- This question is different from the others because there are brackets. When you have brackets you have to do what's in the first, then whatever is outside the brackets. Remember B.E.D.M.A.S.

And for my last question I'm doing letter P.

Here I go:

P. A BigBurger has 1/4 pound of meat. A SuperBurger has 1/3 pound of meat. How much more meat is used for the SuperBurger?

P. 1/3 - 1/4

This question is simple, just use the steps I gave you.

I hope that my scribe wasn't that bad, and didn't have a lot of mistakes. Now I have to finish my other homework... So bye! Oh and before I forget, since there are 2 scribes I'm going to chose who's going to the next scribe at school (: bwuahah. ttfn.

Scribe Post for April 17, 2009

2009-04-17T18:50:00.006-05:00

Today in class we worked on the 37 questions for homework. Carrie and I chose to be the scribes because we're leaving in ONE WEEK for the MUSIC TRIP! (: I chose six questions on C-42 with the question that says, "Why did the boy sheep plunge off a cliff while chasing the girl sheep?" I hope you guys like my scribe post, my brother helped me with it, props to him! If any of you have any suggestions for improvement or if I made any errors/mistakes on my scribe post, please let me know. Also feel free to comment (:

Hover over this image for part two of the solution.

Hover over this image for part two of the solution.

The Green Effect

2009-04-16T07:55:00.001-05:00

A Post From Liem

The Green Effect!

Okay guys! I found this really cool idea! Its called the green effect.National Geographic with Sun Chips are joining forces to inspire people to make a change in their communities. We need to compose a letter to National Geographic of 250 words or less explaining what we can do to make our community a GREEENER place. The five best ideas will win $20,000 dollars to help make their community a greeener place.

Some ideas would be like making a garden, putting recycling boxes around parks, making our school more green and other stuff! Imagine if what we can do with $20,000 dollars to make our community more GREEN

For more information please visit http://greeneffect.nationalgeographic.com/
Online voters will choose one winner, and a panel of judges will select the remaining four.

Scribe Post April 14

2009-04-14T20:29:00.007-05:00

So im the scribe. Its not going to be very good just going to show some answers to the questions we did earlier. Now here's the first question.
to explain a little. To get from 5 to 15 is you multiply the first numerator and the second denominator. Also to get from 1 to 9 is you divide the second numerator by the first denominator.
Same thing goes for this question
for this one I just switched the improper fraction to a mixed number also known as a mixed fraction containing one whole number and a fraction.
Well that wasn't much of a scribe but I still have other homework to do and I still might not finish. Oh yeah for next scribe i pick Jayzie good luck.

Scribe Post Number Two: April 24th 2009

2009-04-14T18:44:00.006-05:00

Okay so today there is two different scribes. I will be doing the fraction word problems. The first one is the easiest one to do.

So the first part is that the theme of these question are that Betty is planning a birthday party for her little brother.

Here is the question and the work:

Just click it to make it bigger if you find it hard to see. Anyways as I put on the page that if you ruined 3/8 of something you need to use the 1/2 for the ice cream in the tub to fix it, right? So then you would have to add what is left of the cake to what you have of the ice cream that could be used to remake it.

I don't get problem number two. The whole hot dog thing. I couldn't turn it into a equation. Which I think is really dumb but what can I do. So to anyone that does know what to do I hope that you make a comment on this Scribe Post and tell us your theory. We would love to hear it.

Anyways onto the last question. I was a bit confused on this one to but I think I get it and if I don't again the whole comment thing. People like to correct their mistake or at least know what they are, thank you very much.

So as you can see I like to do things the hard way but I did simplified it in the end. This one was kind of hard because of the 3 fractions but I did it the way one of my friends suggested. It looks right to me. Anyways that is all I had to do. I hoped it helped you.

Skills Assignment Part 1

2009-04-14T10:24:00.009-05:00

Converting mixed numbers to improper fractions.

Scribe Post for April 13, 2009

2009-04-13T20:10:00.002-05:00

Here's my scribe post in a video.

Thanks for reading/watching. The next scribe is going to be ADRIAN. Oh and, don't choose me or Peachy for scribe, because we already have 4 or something, so yeah.. Anyways, hope you understand fractions, and comment if I should change anything.

Challenge Picture

2009-03-20T21:12:00.000-05:00

Hey Everyone, I hope this helps!

Challenge!!!

2009-03-18T12:40:00.001-05:00

Hey Everyone! I'm not sure if Mr. H want's me to write here, {please let me know if this is bad haha} but my name is Chantelle and I am going to the U of Regina and have been invited to your Blog!!!

I came across a question in one of my math classes that I feel will be right up your alley with Pythagorean Theorem! So here is a little challenge for you!

The question is: The perimeter of an isosceles triangle {2 sides are equal and the two angles at the base are equal} ABC with AB=BC is 128 inches. The altitude {height of the triangle which is perpendicular (90 degree angle) to the base ( and in the case of an isosceles triangle, hits at the midpoint of the base)} BD is 48 inches. What is the area of the triangle??

So, you will need a couple formulas other than just pythagorus. However, I think you can do it!
This is from my Math 308 class, which is a 4th year math class!!!

Good Luck!!

Scribe Post, March 10, 2009

2009-03-10T18:15:00.017-05:00

Since Renz forgot to choose a person to do the next scribe, I'll do it. But.. just to tell everyone, I AM ALREADY 2 SCRIBES AHEAD or maybe one. So, please don't pick me to be next and please don't forget to pick someone to do the next scribe!

Today in Math class, we first corrected our homework from yesterday.

To join the perfect square club, you must be a full NUMBER, no decimals. EG: 4x4

If you do not belong to the perfect square club, you are imperfect. You are not a PERFECT sideline number, you are not a full number. You have a demical. EG: 4.5x4.5

After we corrected out homework, Harbeck drew us 4 squares.

Just like this picture v. He then told us to describe it and write down 3 things about each square.
The first square has an area of 1. It is an all perfect square because one is one square unit. The sidelines are 1, and you get this by square rooting the area (1). so, squareroot1 = 1. So, 1x1, and 1 squared. This square is also the smallest square out of all of them, and it also belongs in the perfect square club because the sideline numbers are perfect numbers and don't have decimals.

This second square has an area of 2. It is NOT a perfect square because the square root of 2 is 1.414, which is obviously not a perfect number. So, the square cannot have a perfect sideline either. Squareroot2 = 1.414, 1.414x1.414 and 1.414 squared. This square is between the first and last square. This square would not be able to get into the perfect square club because the sidelines have decimals in them.

The third square has an area of 3. It is NOT a perfect square, because the square root of 3 is 1.732, which again is obviously not a perfect number. so the square cannot have a perfect sideline either. Squareroot3 = 1.732, 1.732x1.732, 1.732 squared. This square is between the first and last square. This square would not be able to get into the perfect square club because the sidelines have decimals in them.

The last square has an area of 4. It is a perfect square because the square root of 4 is 2 which is a perfect number. Squareroot4 = 2, 2x2, 2 squared. This is also the largest square in the whole picture, and it also belongs in the perfect square club because the sideline number is a full number with no decimals.

And lastly, he gave us homework.

HOMEWORK:

Make 9 squares and write down 3 things about them, and explain how they all fit together.

Heres what I think the answers are. (Sorry, It would take too long to draw 30 squares on paint.)
Square 5 - The square has an area of 5. It is not a perfect square because the square root of 5 is 2.236, which is obviously not a perfect number. This square would not belong in the perfect square club because the sideline numbers are not full numbers. (decimals). Squareroot5 = 2.236, 2.236x2.236, 2.235 squared. You can also find the perimeter by adding all the sideline numbers together. 2.236+2.236+2.236+2.236=8.944.

Square 6 - This square has an area of 6. It is not a perfect square once again, because the squareroot of 6 is 2.448, which is obviously not a perfect number. This square would not belong in the perfect square club because the sideline numbers are not full numbers once again. Squareroot6 = 2.448, 2.448x2.448 and 2.448 squared. You can also find the perimeter by adding all the sideline numbers together. 2.448+2.448+2.448+2.448=9.792.

Square 7 - This square has an area of 7. It is not a perfect square because the square root of 7 is 2.645, which is obviously not a perfect number. This square would not belong in the perfect square club because the sideline numbers are not full numbers once again. Squareroot7 = 2.645. 2.645x2.645, and 2.645 squared. You can also find the perimeter of the square by adding all the sidelines of the numbers together. 2.645+2.645+2.645+2.645=10.58

Square 8 - This square has an area of 8. It is not a perfect square because the square root of 8 is 2.828, which is obviously once again not a perfect number. This square would NOT belong in the perfect square club because the sideline numbers are not full numbers. Squareroot8 = 2.828, 2.828x2.828, and 2.828 squared. You can also find the perimeter by adding all the sideline numbers together. 2.828+2.828+2.828+2.828=11.312.

Square 9 - This square has an area of 9. It is a perfect square because the square root of 9 is 3, which is obviously a perfect number. This square would definitely belong in the perfect square club because the sideline numbers are full numbers. Square root 9 = 3, 3x3 and 3 squared. You can also find the perimeter by adding all the sideline numbers together. 3+3+3+3=12.

WELL, there. I don't really understand the last part of the homework, so I'll wait until tomorrow and see. I thought we had to talk about 30 squares! and I did 27, but then that time I checked my books and asked many people. And they all said 9. So, booo me. Anyways, thanks for reading! PLEASE comment. NEXT SCRIBE, I CHOOOOSE..... DEAN.

March 9 scribe (Renz)

2009-03-09T18:22:00.008-05:00

Today we talked about perfect squares and charts which in this case is the multiplication table chart.

So Harbeck was talking about the multiplication charts and squares and stuff and then harbeck made us write down and finish a multiplication chart like so:

Yeah so it's not pretty but this was what we had to copy down for the chart.

Then we talked about some multiplication stuff and then we wrote down some multiplication questions like 1 squared then Harberck made us write it till 30 squared then we had to write it out 1 to 30 in standard form (eg., 2x2). so then this is what it looked like.

Okay so this was the sheet that we had to make with the multplication and the exponents and then we had to figure out the answers then we had to look at it and look for a pattern and from what i see i think that the pattern is that it is always being added with a odd number to make the second number(eg. 30x30= 900 or in the pattern it would be like 59+841=900).

Then after we did those things and finished them, then Harbeck gave us our homework.

We had three homework for the day:

1.we had to colour our grid with different colour by row.

2.then make a rule about the chart and the patterns.

3. Then finish the times table with all the numbers placed in order for the multiplication chart.

So then this is what we talked about and worked on for this class.

Pythagoras POST

2009-02-27T10:29:00.006-06:00

Well..... harbeck sort of fell on his head and he can't remember a thing...

In his backpack he found

a triangle
a square

So the first thing we are going to talk about is THE TRIANGLE .

The triangle is a right angle triangle also know as the R.A.T. The sides make 90 degree which is the legs. The longer side of the triangle is the hypotneuse. You'll always find the hypotneuse across from the little square inside the triangle.

The square is next in line.....

The square is always equal. All the sides are the same. It all makes up 360 degrees.

Pythagoras

2009-02-27T07:33:00.016-06:00

Well Mr harbeck fell and hit his head and now he has amnesia. all he was going to teach us is gone and all he has is a few artifacts that he found in his backpack so i will try and help him remember by explaining all the diffrent artifacts and how they are connected.

well this is on of the artifacts he found, it is a statue of Pythagoras. Pythagoras was a great mathematician many years ago he created the Pythagorean theoem. he also had many other mathematical theories and that is why he is reffred to as the Father of math. Pythagoras was greek man who lived to the age of 100(really really old for people back then) and he was a vegitarien, no meat of meat related products.

this is a 90* degree angle, there is a box in the corner of the triangle to show that it is a right or 90* angle. it has 2 legs commonly labled A and B. A and B switch some times. then the longest side that is facing outward is refered to as the hypotenuse.

this is Pythagorean theoem that pythagoras invented or you can think of it as more of a discovery and less as an invention. squared=~

that theoem states that A~ +B~=C~

so imagin a big square and then fill that square with blue blocks but leave 9 spaces around the edge of the square then fill those 9 spaces with red blocks. the red is A and the blue is B and the big square is C.

now this is the last artifact that was in Mr Harbecks backpack it is a perfect square. the way you can tell it is perfect is because of those small line on the side of the faces of the square. the lines means all sides are equal, that makes it a prefect square

that is my explination on Mr Harbecks artifacts

vid 1

Pythagaros

2009-02-26T22:19:00.014-06:00

The first artifact is a a right angle triangle, also known as 'R.A.T'. The square in the corner is the right angle, and it's not called a right triangle because it's on the right side (in this case its not on the right!) The right angle is an angle of 90 degrees. The triangle is made up of legs: A and B, and the longest side of the triangle or the part of the triangle that is diagonal from the right angle is called the hypotenuse. The acute angles are going to be Theta and Beta. Theta and Beta are called complimentary angles because together they form a 90 degree angle.

This second artifact is a square, this is a special type of rectangle. A square has 4 equal sides. Those 4 equal sides are called lines of symmetry. A square is made up of 90° angles, one at each corner. So the square makes 360°because 4 x 90° = 360°. In this picture, there are 2 right angle triangles.

This third artifact is the Phythagorean Theoem. This means that, if you know side "a" and side "b", then all you do is square them. So, you have to add them together, which leaves you the c" squared. Then find the squar root of the answer from your calculator, that will give you the length of side "c".

This is a statue of Pythagoras. He is the great greek man that made the Pythgorean Theorem and many more. He was the first known westerner to say that the Earth revolves around the sun. He was the only westerner to be allowed in pyramids, only one to speak fluent Egyptian language.

Pythagoras: The greatest genius ever lived. He is a "uber" smart mathematician, he was a Greek geek. It wasn't for sure that he was really alive or even existed.

Legs: These are connected to create the right angle of the right angle triangle a.k.a sides "A" and "B". They are also smaller than the hypotenuse.
Hypotenuse: The hypotenuse is the longest side of the right angle triangle, its the opposite side of the right angle also.
R.A.T: stands for Right Angle Triangle.
Greek : A person that from ancient modern Greece, also means that you lives or was born in Greece.
Theorem: A theoretical proposition, statement, or formula, something to be proved from other formulas.

PROBLEM#1:
In this problem that Mr.Harbeck gave us, we had to find the base of the triangle. This picture explains how I solved 'c'.

Problem#2:
First, you need to find out how long each side of the square is. Then that will give you side "A" and "B" for the triangles since they're both the same length. Okay so, like a normal question find the length of the hypotenuse, which is 'c'. Once you have gott that you can now label the triangle and add up all the sides to find the perimeter.

Pythagoras

2009-02-26T21:56:00.009-06:00

Apparently, Mr. Harbeck slipped on ice and bumped his head. Trust me, it happens everywhere in the winters of Winterpeg. That accident has caused him to have amnesia. Now, as a class, he needs us to explain the artifacts he found in his backpack.

-NOTE- Pay attention to the words that are PURPLE because those words are related with the artifacts found with Mr. Harbeck.

1st Artifact

This shape is called a right angle triangle, R.A.T. for short. The bottom left corner is a right angle, or a 90 degrees angle. The lines connected to it are called legs. These legs are usually labeled "A", and "B". "A" is usually the one that stands upright because it stands for altitude, and "B" is usually on the bottom because it stands for base. However, it doesn't matter, it could work either ways. The longest side of the triangle is called the hypotenuse, and labeled side "C". You could find the hypotenuse across from the right angle. The two angles connected to the hypotenuse are labeled Theta and Beta. These two angles added together equal 90 degrees. That makes those two angles called complimentary angles.

2nd Artifact

This artifact is called a square. What makes it a square is the lines of symmetry. The lines of symmetry are the lines that go through each side of a square. This indicates that all sides of the square is equal. Each corner of a square is 90 degrees angle. If you add up all of the corners you will get 360 degrees. Which means that this square is 360 degrees. If you cut this square in half from corner to corner, you will have two R.A.T.'s.

3rd Artifact

This is the pythagorean theorem. It was created by a guy named Pythagoras. I will talk more about him soon. Anyways, he came up with this equation to find the unknown side of a right angle triangle. Say we know side A, and B of a triangle. What we wanted to find out was C. All we have to do is use the pythagorean theorem. First we square side A and B. Next you add both of them up. And lastly, you find the square root of the sum on the left side, and you find the square root of the C squared on the other side. The number that your left with, should equal to side C.

4th Artifact

This is a statue of the famous Pythagoras. This is a Greek man that created the pythagorean theorem. He also came up with many other conclusions and theories. Because of this, he is often called the father of math. He figured out that the earth revolves around the sun, and the circumference of the earth. He spent a lot of time in Egypt, and he was the only westerner to be buried in a pyramid. He was also fluent in Egyptian language. Another interesting fact was that Pythagoras was a vegan. A vegan is someone that only eats non-living things.

Here are the two videos Joseph, Adrian and I made.

Thanks for reading and watching, please comment if I missed anything. Thanks and goodbye!

Sutchai's Pythagoras Post

2009-02-26T21:51:00.013-06:00

So... Harbeck fell and had amnesia and we have to help him and explain some artifacts that were left in his backpack. Luckily, he has some students that will actually HELP him. (:

Right Angle Triangle

This is a Right Angle Triangle (R.A.T.), it has legs and a hypotenuse. It is called a right angle triangle because it has a right angle in it. Do you see that little square in the corner of the triangle? That's where the right angle is located. The legs of the triangle make up the right angle. You can label these "a" or "b", it doesnt matter which side "a" or "b" goes on, as long as one is on one side of the right angle and vice versa. The hypotenuse is the longest side of the triangle, it is directly across from the right angle. It is labelled "c". It has one right angle and two other angles that make up 90 degrees. The two acute angles that make up the 90 degree angle are called "complimentry angles". They can also be called "theta" and "beta" because theta and beta make up 90 degrees. Theta and beta are located at the two acute angles.

Square

This is a square. How do we know that it's not a rectangle? Because it has lines of symetry. The lines of symetry are the lines on each side of the square. The lines of symetry indicate that all sides are equal. A sqare has four 90 degree angles. It is in each corner of the square. This whole square adds up to 360 degrees. How do we know? Because 4 x 90 degrees = 360 degrees. It has two right angled triangles in it. How do we know? Because when you cut the square in half from opposite corners, you will get two right angled triangles (R.A.T.). Also, since the triangle adds up to 180 degrees, 2 x 180 degrees = 360 degrees.

Pythagoras

This is a Greek man who figured out the "Pythagorean Theorem". He was also known as the father of math. He hung out in Egypt and he was a vegan (someone who eats only non-living things). He figured out the circumference of the earth and he also found out that the earth revolves around the sun. He figured out the cure for sick people, harmonics. Pythagoras liked to make words for a huge group of things like for all the planets and stars he made the word cosmos.

Pythagorean Theorem
This is the "Pythagorean Theorem". It was created by Pythagoras. He came up with this theorem to figure out an unknown side of a triangle. For example, when you know the sides "a" and "b", you can plug them into the theorem and multiply "a", multiply "b" and add them up together. Then, find the square root of the product and find the square root of "c" squared. Then you have what "c" equals. When you prove it using squares, it should work out if you cut out the squares to fit the "c" squared. The R.A.T. in the middle proves that it is the length of the unknown side.

Mr.Harbeck, I personally think that we should care in grade 8 math because it will be heading our way when we get to a harder level in math, and we'll need to know these things already in order to learn more advanced stuff.

Now, for the 2 problems I chose to solve.

Here's the first one:

To find the base of the triangle, first you must find out the base of one side. Then, after you find the base of one side of the triangle, double the base of that one side, and you'll get the base of the whole triangle. You have to double it because you know that both sides of the triangle are equal.

Here's the second problem:

To find the perimeter of the game board, first find the sides of the square. Then, once you know the side of the square, you'll know sides "a" and "b" on the triangle, since they're both equal. Since you know both sides "a" and "b", you have to now figure out what the hypotenuse is ("c"). Once you figure out the hypotenuse, you now know all sides of the triangle and you can add up all sides of the game board.

Here are the math videos that Michelle and I made:

Scribe Post For February 26, 2009

2009-02-26T21:48:00.002-06:00

Today we worked on our math videos for our Pythagoras blogposts.

These are my videos with Carrie and Krissia.

Part One:

Part Two:

The next scribe is ............. SUTCHAAI ! (: Good luck and have fun doing the next scribe ;)

Phythagoras Post

2009-02-26T21:47:00.012-06:00

Surprisingly, Mr. Harbeck fell and bumped his head on the floor. Now, he can't remember anything so he asks us to find out what these artifacts are to help him remember.

Right Triangle:

This is the right triangle. The sides that make up the 90 degree angle are called legs. The legs are labelled A and B. The hypotenuse is the C, and is the longest side of the triangle. You can always find it across from the 90 degree angle. Theta and Beta show at the top corner and the bottom corner of a right triangle. The top one is the Theta and the bottom one is the Beta. Complementry angles arPhye formed by Theta and Beta because Theta and Beta equals 90 degrees.

Square:

This is a square, which means that all sides are equal. There are four 90 degree angles in the shape which equals to 360 degrees. You can always find the area or perimeter of the square if you know the measurement of one side. If you know the measurement of one side, then you know the measurement of all sides because all sides of a square are equal. In this picture, one side is 5, so we know that all sides equal 5. 5x5 , which is LxW. The area is 25.

Phythagoras:

Phythagoras is the man who made the phythagorean theorem. Phythagoras was often called the Father of Math. He is a Vegan, someone who doesn't eat things that are alive. He loves Music just like how he loves Math. He believed that he could make a square out of four right triangle angles and that he could make a triangle out of three squares. Phythagoras was the person who discovered the circumfurance of the world.

Phythagorean Theorem:
a²+b²=c²

This is the Pythagorean Theorem. Pythagoras came up with the theorem to find out the length of a side of a right angle triangle. The theorem means is that, if you know side a and side b of a right triangle, all you do is square them. After that, you will need to add them together which will leave you with side c squared. Find the square root of the answer and that will give you the length of side c, the hypotenuse.

Heres the problem that Mr. Harbeck told us to use use for our post:

Pythagoras

2009-02-26T21:17:00.015-06:00

Vocabulary:
Hypotenuse - The hypotenuse is on the opposite of the right angle and is the longer side of the triangle.
Legs - Are the shorter sides of the triangle.
R.A.T. - Right Angle Triangle.
Theorem - A theorem is a demonstrated statement that has been proved or needs to be proven. Pythagoras' theorem was a² + b² = c² .
Greek - A native or citizen of Greece. and that's it for the vocabulary.

Pythagoras was a Greek who lived 2500 years ago. He was an "uber" smart mathematician. He is the one who came up with the theory of a² + b² = c². Pythagoras is important because his mathematical theories and formulas are still used today.

This shape is a right angle triangle (R.A.T.). The legs are the shorter side of the triangle (a and b). Across the right angle, is the hypotenuse. The hypotenuse is always the longest side. The hypotenuse is c. The formula for a right angle triangle is a² + b² = c². a can either be the vertical line, or the bottom line. The same goes to b.

This shape is a square and it has four right angles. The lines on the square just help you see that its equal on all sides. All together the square equals 360 degrees and to get that all you do is time 90 degrees by 4 which is 360.

You need to find out how long each side of the square is. Then that will give you side 'a' and 'b' for the triangles since they're both the same length. So then find the length of the hypotenuse, which is 'c'. After you find that out you can now label the triangle and add up all the sides to find the perimeter.

Pythagaros

2009-02-26T19:44:00.011-06:00

TRIANGLE

So this is a right triangle also known as R.A.T. It is called a right triangle because it has that little square that tells you it's 90°. Well the 90° is made by two parts of the triangle, that is θ (theta) and B (beta). Those two angles make 90° are called complementary angle. Hypotenuse is the longest side which is often called or labeled as "C". Just remember that is it across from the right angle. The two smaller sides are often labeled as "A" or "B", it doesn't matter which side it is on but now across the right angle.

SQUARE

This is a special type of rectangle. A square has 4 equal sides. You can tell that it has 4 equal sides because it has those lines on the sides(lines of symmetry). A square is made up of four 90° angles, one at each corner. The whole square makes 360° because of the four 90° angles. In this square, there are 2 right angle triangles. You know this because if you cut a line from one corner to the opposite corner and it'll make the 2 R.A.Ts.

PYTHAGOREAN THEOREM

This is the Pythagorean Theorem. The length of a side of a right angle triangle. Well what the theorem means is that, if you know side "a" and side "b", then all you do is square them. From there, you will need to add them together, which will leave you with side "c" squared. Find the square root of the answer and that will give you the length of side "c".

PYTHAGORAS

-father of math

-hung out in Egypt

-harmonics

-vegan

-cosmos

-circumference of the Earth

-universe Earth around the sun

VOCABULARY

Legs: make the right angle. Legs of R.A.T. are (a) and (b).

Hypotenuse: is the longest side of a triangle.

R.A.T: this stands for Right Angle Triangle

Greek: is a person who lives or born in Greece.

Theorem: a formula or a theory that can be proven

Problem #1
Problem #2You need to find out how long each side of the square is. Then that will give you side "A" and "B" for the triangles since they're both the same length. Ok so, like a normal question find the length of the hypotenuse, which is 'c'. Once you have got that you can now label the triangle and add up all the sides to find the perimeter.

These are my videos with Carrie and Arielle.

Pythagoras

2009-02-26T18:33:00.015-06:00

Mr. Harbeck fell and he hurt his head somehow... and he needs our help to make him remember the thing he forgot...

He found his backpack and this is what he found...

This is a picture of Pythagoras. He is also known as the father of math. He discovered

that the earth goes around the sun. He found a cure for when people is sick and that is to play music. He is a Vegan. He also found the circumference of the earth. He is the one who came up with the Pythagorean theorem.

The next thing he found was a triangle... R.A.T

This is a Right Angle Triangle also known as the R.A.T. The side that makes 90 degree is called the legs. That you have to lable a and b. The hypotenuse is the C, and is the longest side of the triangle. It is always across from the little square inside the triangle.

This is What i mean....

Next is the Square.....

This is a square, all the sides are equal. There are four 90 degree angles in this shape, which equals up to 360 degrees all together. The sqaure is made up of 2 right angle triangles and those black lines on each of the side mean that it is a triangle. if it wasn't there i would mean that it is a sqaure.

Next is the Pythagorean Theorem....

My video on Pythagoras

Pythagoras

2009-02-26T17:37:00.017-06:00

Mr.Harbeck was suppose to teach us a new unit but apparently he slipped and bumped his head on the ice and now he has amnesia. So, we have to help him out and figure out what he was going to teach us so we could recover his memory.

Mr.Harbeck said that he found these artifacts that was left in his backpack. So right now I'm going to explain what these artifacts are and this vocabulary that was left on a piece of paper and how they are linked to these artifacts.
Do you know why these words are related to the artifacts? I DO ! The word legs relate to the right triangle because well you know the small square in the corner? That's the 90 degree angle. In other words its called 'A' and 'B' , which are the legs. If they can make a right triangle, they are called complimentary angles.
The word hypotenuse relate to side 'C' of the right triangle. Side 'C' is the longest side of the right triangle. It is always across from the 90 degree angle.
The next word R.A.T stands for Right Angle Triangle. It means that a triangle has a right angle (90 degree angle).
The word Greek relates to Pythagoras. Pythagoras was a greek person that was the father of math.

The word theorem relates to a formula, a² + b² = c² or a theory that can be proved.
The first artifact is a triangle. This triangle is a R.A.T (right angle triangle) because it has a 90 degree angle. You can tell if its a right triangle because of the square at the corner. This right triangle has two sides that are the legs, which are 'a' and 'b'. It also has two angles which are theta and beta. These angles create a complimentary angle because together they create a 90 degree angle. The longest side of the triangle which is 'c' is called the hypotenuse.
The second artifact is a square. To be sure it is a square, we have to put lines on each four sides because that tells us that each side are equal and that it's a square. The four sides of the square are called lines of symmetry. This square has four right angled triangles at each corner. You can also get two right triangles from one square because if you cut the square in half, you get two right angled triangles. The whole square equals to 360 degrees (4 x 90 = 360).

The third artifact is the Pythagorean Theorem. This is a formula that is related to 'a', 'b' and 'c'. In other words the 3 sides of the right triangle. Pythagoras was the one who came up with the theorem. This is a picture how we use the Pythagorean Theorem. Here is a square that is 3x3, another square that is 4x4 and another one that is 5x5. The 5x5 square is the one that was made from both 3x3 and 4x4 squares. The 5x5 square which has a square in it is the 4x4 square and the squares outside of it is the 3x3 square. So, the pythagorean theorem works because 3x3=9, 4x4=16, 5x5=25 and 9+16=25.
The last artifact is a picture of Pythagoras. He was greek and a very intelligent mathematician. Pythagoras was known has the father of math. He was the one who created the Pythagorean Theorem, a² + b² = c². Pythagoras is a vegan (vegetarian), a person that doesn't eat a live things. He was the one who discovered the circumstanes-cosmos of the earth and that the sun goes around the earth. He was into harmonics which meant that he loved music. Pythagoras thought that he could make a square into four triangles and that he could make a triangle out of 3 squares.

Video#1:

Video#2:

Video#3:

PROBLEM#1:
In this problem that Mr.Harbeck gave us, we had to find the base of the triangle. This picture explains how I solved 'c'.

Problem#2:
First, you need to find out how long each side of the square is. Then that will give you side "A" and "B" for the triangles since they're both the same length. Okay so, like a normal question find the length of the hypotenuse, which is 'c'. Once you have gott that you can now label the triangle and add up all the sides to find the perimeter.