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Students decompose an addend to make `10` when finding a sum within `20`.

By Amplify Classroom

Grades: 1st Grade

Subject: Math

Learning goals: Today’s Goals • Represent and solve Put Together/Take Apart, Total Unknown story problems with 3 addends.  • Language Goal: Compare different strategies for adding 3 numbers. (Speaking and Listening) Materials Manipulative Kit: connecting cubes (optional), double `10`-frames (optional), two-color counters (optional)