Subtracting integers video - three models to explain how subtraction of negative numbers works

I explain three different models you can use to show why subtraction of integers works: 1) number line jumps; 2) concept of difference; 3) positive/negative counters. The bottom line is that students need to learn the shortcuts and rules, but these models can help justify the rules. ... subtraction integers "negative numbers" "number line"

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YouTube | June 7, 2009

Tags:. .shortcuts. .subtracting. .subtraction