A set of addition dominoes to use in the classroom when applying the double +1 strategy.
Use this teaching resource as a math center activity to encourage students to apply the double +1 strategy when adding.
Print, cut out, and laminate a class set of the dominoes and store in a zip-loc bag.
Individually, or in small groups, students connect the dominoes by matching the answer with the question.
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Common Core Curriculum alignment
Add and subtract within 20, demonstrating fluency for addition and subtraction within 10. Use strategies such as counting on; making ten (e.g., 8 + 6 = 8 + 2 + 4 = 10 + 4 = 14); decomposing a number leading to a ten (e.g., 13 - 4 = 13 - 3 - 1 = 10 - ...
Fluently add and subtract within 20 using mental strategies. By end of Grade 2, know from memory all sums of two one-digit numbers.
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