A set of addition dominoes to use in the classroom when applying the doubles +1 strategy.
使用这个教学资源math center activityto encourage students to apply the doubles +1 strategy when adding.
Print a set of dominoes on cardstock for added durability. Cut them out and store them in a resealable bag.
Individually, or in small groups, students connect the dominoes by matching the answer with the question.
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.
Apply basic fact strategies to add and subtract within 20, including making 10 and decomposing a number leading to a 10;
Recall basic facts to add and subtract within 20 with automaticity;
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