Showing posts with label holland841. Show all posts
Showing posts with label holland841. Show all posts

Holland's Measues of Central Tendancy

Friday, October 31, 2008
Mean:
The sum of all digits divided by the amount of numbers in the data set.

Median:
The middle number in a set of data.

Mode:
The most frequently used number in a set of data.

Range:
The difference between the smallest and largest number in a set of data.

Scribe Post October 27/2008

Tuesday, October 28, 2008
Uh.. Is this too late? Whatever. Harbek's not here. He's skipping.


Today, or, yesterday, Mr. Harbek started teaching us about subtraction. Then he said, there's no such thing as subtraction. Half the time, i don't even know what he's talking about, but as today's scribe, yesterday's scribe, it's not my job to understand, i just have to copy. You have to understand. Sucka. OMG. :P


Harbek: Class, were starting subtraction. 41 your my favourite class, 17 are a group of nerds. Now, THERE IS NO SUCH THING AS SUBTRACTION, IT"S ALL JUST BACKWORDS ADDITION. Or somewhere along those lines. I can't spell backwards...


Like so:

(-42)-(-53) <----NO!! We have to change that.

(-42)+(-53) There's a plus there now.

Cool 41 student: It doesn't make sense anymore, Mr. Harbek.


Harbek: Your very right student! We have to change that.

Like so:

(-42)+(+53)

Harbek: There are a few rules for this, Fontaine, are you paying attention? Because this is your homework for this evening.

So theres four, or more, steps that Mr. Harbek mentioned. I took note to what those steps were, but lost note, to where those notes are. So, these may not be the exact steps, but hopefully your all better learners than I am and noted them more gooder. Whoa! I just figured out how to use spellcheck.

Integer Tile Rules/Steps

example equation: (-5)-(-5) Nice and easy for room 17.


Step 1:

-Get rid of the last two number signs on the number equations. Like this:

(-5)+(+5)

Step 2:

-Use integer tiles to represent the positive and negative. (I don't know how to import pictures, so get used to the tiles I'm using.)

O=Positive

O=Negative

(-5)+(+5)

OOOOO, and OOOOO

Step 3:

-Now you have the correct number of tiles. now do like the sign in the middle, (+) and add them up. Like this:

OOOOO OOOOO

OOOOO <----

Step 4:

-Now that they are zero pairs, you can finally do the work. Not all equations are going to have zero pairs in them, so you'll have to make sure your doing this the right way, (the way Harbek made us write it, not the one I made up...)


Since i have this computer work deficiency where I don't know how to do anything, this post sucked. Hopefully, this next scribe knows what he's doing. (Is this right? Do i just, randomly pick somebody... You'll figure it out.) The next scribe is... Alex. S Sorry, kinda.