Scribe Post for March 4, 2010

Thursday, March 4, 2010
Today we had a double math class. In the morning we did our test, then in the afternoon we learned more about our new unit.

Multiplying monomials by polynomials:

(3x) (x + 5)

  • this model says that the answer would be 3x^2 +15, because the large squares represent x^2 and the skinny rectangles represent x. So if you multiply to x's together they become x^2. When you multiply an x and a constant (5), the answer results in x.

(3x) (x +5)

(3x) (x) + (3x) (5)

= 3x^2 + 15x
  • In the algebraic way you use distributed property, which means to multiply a single term and two or more terms inside a set of parentheses (brackets)
The second example we did in class:

(2x-3) (2x)

  • The answer shown in the picture would be: 4x^2 + -6x

(2x-3) (2x)

(2x) (2x) + (2x) (-3)

=4x^2 -6x

Then we got some other questions to solve, but we did not have to make a model for it.

1) (2y-1) (7y)

(2y) (7y)+(-1) (7y)

= 14y^2 - 7y

2) (y+2) (-6y)

(-6y) (y) + (-6) (2)

= -6y^2 - 12y

read pg 264-268 ( key ideas)

check your understanding # 2, 3

practise # 4 or 5
6 or 7
8 or 9

Due on monday ( stash it stuff)

Kayaks for Rent or What Have You Got to Hide (Challenges)



Math Links (Sheets)

Signed Test

That's my scribe! For the next scribe I choose Kim.


shaneille 9-05 said...

Great Job! I like your pictures. Although in your first paragraph you said when you mutiply x and a constant (5) the answer would be 5x not just x. Also maybe in the examples you could have done it on paint to make it stand out. Overall great scribe!

Zerlina905 said...

Nice Scribe Simran! I agree with Shaneille and I did catch that in the first paragraph. The result would be 5x, make sure you fix that. Thanks for putting up the homework, I forgot to write it down. Great job on the pictures, and nice use of colour. Great job again!

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