Friday, October 14, 2011

Using ScreenChomp to Communicate How to Subtract Integers

How does one subtract positive and negative numbers?
It's harder to see and do than addition, that's for sure!
After learning several methods
(ask your student which method they prefer...positive and negative notation, driving along the number line, or adding the opposite),
Students focused on explaining the process to others using an iPad App...ScreenChomp.





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