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QUESTIONS AND ANSWERS:
I downloaded your geometric mean "domino" game - great activity. I played both versions in my classroom today and it was a great way to practice and have a little fun. I do have a couple comments/corrections, though. On the beginner version, there are two answers of "6" - that doesn't work very well if they use the wrong 6 first because they get from start to end in about 4 cards. In the mastery level game, the last answer is incorrect - you have 4.4 and it should be 14.4. Typical kids - I had seven groups playing this version today and 6 groups had finished their "line" from start to finish when the last group called me over and pointed out the error in the last card. None of the other groups had bothered to do the last problem because it was just the last card and they just put it at the end - silly kids. It ended up providing some good discussion about why you should always check ALL the answers.
Anyway, if you make corrections to these, I would appreciate an updated version.