Five pages of shake and spill. Give each child a cup of two-sided counters (or beans painted on one side): they shake the cup, spill the counters and count how many land filled side up and how many land empty side up. Pages 1 to 4 find all the ways to make 5, 6, 7 and 8. The first row or card is a worked example; for every spill, children color that many counters in the next row and write how many are filled and how many are empty. They can find the ways in any order: when the spills stop giving new ways, ask which ways are still missing. The answer key lists the ways in order, from 0 filled to all filled. A legend at the top of each page shows the filled and the empty side. Page 5 shows six spills of 9 and 10 already on the mat: children count the filled and the empty counters and write the number sentence, like 9 = 5 + 4.
Model a shake and spill at the board first: say "5 filled and 2 empty make 7," then color a row to match. Partners can take turns shaking while the other records. When a class has found several ways, line them up in order on the board and look for the pattern: one more filled, one fewer empty. Ask what happens when every counter lands filled, and when none do.
Paint one side of some dried beans or use coins (heads and tails). Shake 6 in your hands, drop them and count each side together. Ask your child to say the way out loud, "4 heads and 2 tails make 6," and to look for a way you have not found yet.
This pack supports the following Common Core State Standards for Mathematics:
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Breaking the numbers 5 to 10 into two parts in every way, with two-sided counters that land filled side up or empty side up. Students color a spill for each way, write how many are filled and how many are empty, and turn spills of 9 and 10 into number sentences.
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