Teacher2Teacher |
Q&A #1657 |
View entire discussion [<<prev]
Integer chips are very useful in teaching the ideas of integer operations. I created something that is even better. I made "smiley" and "frowny" faces on clear overhead materials. The smiles have + + for eyes and the frowns have -_-. Difficult to demonstrate here. But the semicircle of smile placed on top of semicircle of frown actually creates something that really looks like a zero! The abstraction of zero is the hardest thing for kids to get with the other kinds of integer chips. Anyway, with the group you are working with, I would think you would want to have them "discover" the rules. Give them some examples. ADD means to place into the work area, SUBTRACT means to remove from the work area. +2 + -4 Start with the +2 in the work area ADD -4 to the area Now one +1 and one -1 get together to make zero. This happens at another time. So the only thing left in the area is -2 and 2 zeros! I think I still have some handouts on all of this if you would like me to mail to you. -Claudia, for the Teacher2Teacher service
Post a public
discussion message |
[Privacy Policy] [Terms of Use]
Math Forum Home ||
The Math Library ||
Quick Reference ||
Math Forum Search