### Scribe Post for Jan.6 2008

5:09 PM

Today in class Mr. Harbeck went over the homework we had to do on pg.41in our purple booklet.
Then Mr. Harbeck showed us how to use algebra tiles to answer additive and subtractive questions. Next he wrote some questions down for us to do in our colorful booklet.
What are algebra tiles.
Algebra tiles are things you draw to show how you explained it instead of just answering it.

Here are some.
Now Mr. Harbeck showed us how to use Algebra tiles with a Additive equation and Subtractive.
I will be showing you a picture later but now I am going to tell you the steps first.

In a equation the rectangle is N,so don't put in the sign and the cubes are regular numbers.

After you have drawn the Algebra tiles for N+3=5, you now add the negative cubes.
( ones with arrows).
(Which is 3, because you add the opposite of + which is - )
Then you circle the zero pairs (red and white cubes) and put a x through them.
I didn't because its a picture but you can if you are writing it.
Now they are nothing.
Next you only have the rectangle and the = sign on the left and+2 on the right.
After that you combine them both so its reads rectangle = 2 positive cubes. N=2
Now here is a picture of what I just said

Subtractive Example:
After you have drawn the Algebra tiles for -3+N=7, you now add the positive cubes.
( ones with arrows).
(Which is 3, because you add the opposite of - which is +)
Then you circle the zero pairs (white and red cubes) and put a x through them.
I didn't because its a picture, but you can if you are writing it.
Now they are nothing.
Next you only have the rectangle and the = sign on the left and +4 on the right.
After that you combine them both so its reads rectangle = 4 negative cubes. N=4
Now here is a picture of what I just said

I pick Justin.A for the next Scribe. Please comment

#### 6 Responses to "Scribe Post for Jan.6 2008"

January 6, 2009 at 9:01 PM
Good Job!Nice use of colours!:)
January 6, 2009 at 9:06 PM
Good Job Brendan!Nice One!=p
January 6, 2009 at 9:59 PM
great! Brendan you take a lot of time to do this so you have a nice work so good job! nice used of color.
January 6, 2009 at 10:23 PM
hey brendan!!!nice scribe. . .I like the way that you used a lot of colors, but the N should be a small letter not a capital ones. . .but overall you did a great job!!!!lol xD
January 7, 2009 at 7:13 PM
Haha...sure.. you got lots of info :P Great job! I liked the pictures, and all the details. Although, I don't think you should put more than one colour in one word, because it might be hard for some people to read. And thanks for commenting on my "Pay it forward," again (:
January 14, 2009 at 5:28 PM
Good job Brenden! I liked your pictures. But you don't have to use lots of colour in one word. Sometimes it will get confusing for some people. Good job again.