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Check out Graham's Building Fact Fluency Toolkit for addition and subtraction.

Act 1

Standards: TBD

Download the Task

Watch the Video:

The worm compared to 1 unifix cube

  1. What do you notice?  What do you wonder?
  2. How long is the worm? (unit of measure: unifix cubes)
  3. Estimate?


Act 2

Number of colors used and how many of each color


Act 3

How many cubes long was the worm?


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