This week we focused on subtraction with double digit numbers (without regrouping). Students played a game called Sink or Swim with a partner. They selected a subtraction problem, then one partner solved using place value blocks while the other used the standard algorithm (and practiced lining the numbers up by place value in order to solve). Game cards were self checking and students either sank if they solved incorrectly, or swam if they solved correctly. They had a blast and did a great job subtracting carefully! Below are some sample problems and pictures of the kids playing!
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November 2017
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