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

standard: (MCC6.NS.4)

Download the Task

Act 1

Watch the video

  • How many times must each wheel turn to make all of the dots line up again? Estimate
  • Write an estimate you know is too high.  Write an estimate you know is too low.


Act 2

How Many Spurs on Each Wheel


Act 3


 Click the link here to find more of My 3-Act Lessons