Compose and decompose numbers? It's adding and subtracting, but we're finding ways to break apart and put together numbers so that it creates a deeper understanding of what adding and subtracting really is.
We started out with playing "Shake & Spill" with 5 two color counters, and then made this Popplet to represent the fact families of 5 that we discovered.
They especially loved that we could draw the dots inside the popples!
Then we moved on to the next landmark number - 10.
Here is the shake and spill mat that we use with 2 color counters. I created this version, I really don't know who to give credit to for the idea though, this game has been played in so many forms with so many recording sheets! Please download it and you can use it at home with beans, buttons or anything else. If you don't have 2 color counters you can separate whatever you're using into two groups.
We use this mat with any number up to ten. It's a great resource!
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| Click here or the picture to download this mat. |
Then Friday brought even more fun! To show some of the ways to compose ten, we made turkeys! The feathers represent the combinations of ten. Some students chose 2 colors, and others chose 3. They each stamped their hand twice, and recorded the number sentence before adding they turkey body and details. I love the way they turned out! Thanksgiving fun, with a math twist!
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| Created with Pic Collage
Ask your child what it means to compose and decompose numbers! You'll be impressed!
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