Thursday, March 7, 2013

March 7th - Investigation 2.1

Goals for the day:
- Students will be developing algorithms for adding integers.
- Students will model addition of integers using distance/ direction on a number line and chip model.

The main algorithms discussed today were the following:
When adding integers:
1. If the addends have the same sign, combine and use the same sign.
2. If the addends have opposite signs, cancel and take the sign of the number furthest from zero (largest absolute value).

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