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

standard: 3.NBT.2 & 5.NBT.7

Download the Task

Act 1

Watch the video

  1. How much water did he drink?  How many milliliters/gallons of water was consumed? Estimate
  2. Write an estimate you know is too high.  Write an estimate you know is too low.



Act 2

water package label

water left in mL           water left in ounces 

Act 3

How much water was consumed?


 Click the link here to find more 3-Act Lessons