Five pages on the properties of addition, in words first graders use. Page 1 shows six cube trains and the same trains turned around: students write an addition fact for each and see that the sum stays the same. Page 2 gives twelve facts to write as turn-around facts. Page 3 adds zero, then marks eight equations True or False, such as 6 + 3 = 3 + 6 and 4 + 0 = 0. Page 4 adds three numbers by circling the two that make 10 first. Page 5 mixes all three ideas into missing-number equations like 9 + 6 = 6 + __ and 3 + 7 + 5 = 10 + __.
Before page 1, have students build a cube train in two colors, write its addition fact, then turn the train around and write the new fact. Page 3's True or False equations make a good whole-class talk: what does the equal sign say about the two sides?
Line up two kinds of small toys or snacks, say 4 grapes and 3 crackers, and ask how many in all. Then swap their order and ask again. On page 4, let your child find the pair that makes 10 before adding the third number.
This pack supports the following Common Core State Standards for Mathematics:
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A 5-page properties of addition pack for 1st and 2nd grade. Turn cube trains around to see that 3 + 5 and 5 + 3 make the same sum, write turn-around facts, add zero, mark equations true or false, make a ten first to add three numbers, and use all three ideas to find missing numbers. Sums within 20. Answer keys included.
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