Piggy Bank Equations and Cross Outs

Unit 11: Subtraction
Lesson 4 of 4

Objective: SWBAT show the connection between counters and X's for crossing out pictures to subtract.

Big Idea: We bridge the concrete (counters) and representational (pictures) and X's to "cross out" in this important step in subtraction.

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Subject(s):
Math, Number Sense and Operations, subtraction, Critical Area
  55 minutes
2014 04 14 12 59 44
 
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