Resources and Tools for Elementary Math Specialists and Teachers
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    • 4.25
      Great idea
      By bethb on 06/13/2012 - 15:09
    • I had always heard of mean as fair share, but I had not heard of it being used as the "balance point" before. I like that this activity gives students another opportunity to build the conceptual framework for Mean.
    • 4.25
      Good technique but not connected
      By Uncle Bob on 11/13/2012 - 14:29
    • ... not connected to the formula for mean. By adjusting a pair of entries (blocks) down one and up one, the sum of the set is preserved. Students need to see the moves as math justified and not as a trick. Once that is established the blocks can be moved down and up 2 or 3.
    • 4.25
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