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Exemplar 1st Grade Math Unit: Addition and Subtraction to …
modules.sanfordinspire.orgAug 01, 2017 · problems. The use of manipulatives and/or number lines should be used to scaffold student understanding of the concept. Solve. 9 – 4 = Explain how you can use the strategy of counting back to solve this problem. 5 I started with the number 9. Then I counted back 4 numbers saying 8-7-6-5. So I know the answer is 5.