Scribe Post for November 13, 2008

Today in class checked our homework (green booklet pg. 5, 13-18) to make sure our answers are right. We spent most of the class on this. Since you already know the rules/theorem for multiplying integers, I will talk about the "new" thing we learned in class.

We learned what to do with questions like this:

Since there is no sign between the -2 and the bracket, that means you have to multiply. To solve this question, put the -2 in brackets:




Then solve the question like you would normally. Remember, there is an even number of negative integers in this question so the product will be positive.



The answer to this question is +6.



We also learned how to solve questions where the negative sign is outside the bracket. Like this:


That negative sign, all by itself means -1. So the question will now look like this:


(-1)(2)= -2 . Now we answer the rest of the question:
You can also do it this way:

When you see a negative sign beside a bracket (uh-oh) you change the integer to a positive.


Well that's all for today. Remember, homework is the green booklet pg. 5, questions 19 - 36. I hope my pictures weren't too bad ;). I choose Elmane as the next scribe. Please leave comments. Thanks for reading!

11 Responses to " "

November 13, 2008 at 8:32 PM
Great Job Kristin! I like the big pictures you could have mentioned also when the negative sign is outside the bracket it still means remove. Great job again.
November 13, 2008 at 8:33 PM
Oh and you might want to fix your title it has lots of spaces in between each word.
Andrew-73 said :
November 13, 2008 at 8:54 PM
Great Job Kristin! I like the big pictures and colourful words. and i agree with Shannielle your title has lots of spaces but anyways u did good job..
simran 8-73 said :
November 13, 2008 at 9:36 PM
Good job! Your pictures are very well done, but you should have talked about how the negative sign on the outside can also mean -1, but that's all,again well done . :)
melanie873 said :
November 13, 2008 at 11:41 PM
Good job Kristin! I liked how big all your pictures were, and you explained everything very well. Good job again. (:
Leo-73 said :
November 14, 2008 at 9:59 PM
Good job Kristin! Nice big pictures and you explained it very well. I noticed a little grammer mistake in the first sentence. Good job.
angela8-73 said :
November 16, 2008 at 1:05 PM
First of all, your title have too much spaces. I also agree with Leomar that you have a little grammar mistake in the first sentence. Simran has a point too, you should've talked about how the negative sign on the outside could also mean -1. Nice pictures, and colourful words.
Anyways, you did good. You always do. :)
Good Job!
November 16, 2008 at 2:39 PM
Great job on your scribe! I like your pictures and the explainations!
shaine873 said :
November 16, 2008 at 9:04 PM
Good job Kristin...You've explained it very well,i like the way you used a lot of colors..nice one!!!
November 16, 2008 at 9:31 PM
Hey!
Well done! Good pictures. Your explainations were great and really clear. It felt like I was talking to you rather than reading your typing. Keep up the awesome posting! :)
Zerlina 873 said :
November 17, 2008 at 8:22 PM
Well done on your scribe, good job Kritin. It made sense. But one thing I noticed that you had to many spaces between each of your words.

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