This photo (please, please, please excuse our very messy white board!) shows all of the solutions our math group found to the challenge Four Fours, where you make various equations using four 4s to find answers between 1-20. We began with only using addition, subtraction, multiplication, and division, and when we were stuck, I introduced more options, such as 4 squared, square root of 4, and 4/4. These three options helped us to arrive at every number 1-20!
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