2.MD.B.6

Represent whole numbers as lengths from 0 on a number line diagram with equally spaced points corresponding to the numbers 0, 1, 2, … , and represent whole-number sums and differences within 100 on a number line diagram.

 
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Counting Backwards Works Too

2nd Grade Math » Unit: Adding and Subtracting the Basics
2nd Grade Math » Unit: Adding and Subtracting the Basics
Beth McKenna
York, ME
Environment: Suburban
 
Big Idea:

Students are more confident counting up, however, counting back is crucial to understanding subtraction. It needs to be taught and practiced more frequently.

 
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Common Core Math
 
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