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.
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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