This is what we did in Math on April 20, 2009

Problem of the Week:

What is the least positive integer meeting each of the following conditions?

Dividing by 7 gives a remainder of 4.

Dividing by 8 gives a remainder of 5.

Dividing by 9 gives a remainder of 6.

Notes:

Integer Subtraction using chips

In pairs solve the following using (+) and (-) chips.

(+9) - (-8)= -1

(-10)-(-4)= -6

(+5)-(+8)= -3

(-3)-(-7)= -4

0 -(+6)= -6

To subtract integers using chips (+) and(-) chips...

1. Model the first integer in the equation by using chips.

2. Then take away the number of chips indicated by the second integer.

3. "If nothing is there add a zero pair."

Note that adding zero pairs to the first integer does not change its value but does give something to take away if we need to in order to solve the question.

Here is an example:

5-7= (+)(+)(+)(+)(+) then add (+)(+)

(-)(-)

5-7= (-)(-)

5-7= -2

And then we played a game where we had to go up/down the mountain/bottom of the sea then back to sea level.

And we got back our tests from Friday.

And you can also go to this website: http://www.yourteacher.com/geometry/subtractingintegers.php

## Monday, April 20, 2009

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## 6 comments:

Good job Harvey your post was very well done. You wrote down the lesson that day and you also put a video and a link good job. 1 thing though you forgot to choose someone for the next scribe so yeah. Other than that Great job!!

NICE, Harvey! Thanks for carrying on the scribe post:) I liked your website, your video, and your different colors. Also, as Eric said, yeah you did forget to put the next person for the scribe. Anyway, AWESOME JOB!:p

I pick Eric for the next Scribe post.

good job! i liked how you put websites cause there was barely any person to put a site on there scribe post , and good job on using different colours . GOOD JOB .

Good Job!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

Good Job!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

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