# Math Center Activities for Decomposing Numbers: Birthday Party Theme

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9 MB|66 pages
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The activities in this product are ideal for use in math centers. They also can be used with your whole class—students can work individually, in pairs, or in small groups.

The primary learning goal for these activities is that students learn how to decompose numbers from 1 to 10 (Common Core Standard K.OA.3). These activities also are useful for helping first and second graders learn their basic addition facts (Common Core Standards 1.OA.6 and 2.OA.2). The addition facts that students will be working on in these activities are those whose sums are from 1 to 10.

In this activity, students have a given number of objects, from 1 to 10, that they have to put into two groups. For example, in one of the activities, there are “Six children in the bounce castle or in line to ride the pony.” Students put their six stick figure children on the bounce castle or in line for the pony. Then, on the corresponding worksheet, they fill in an equation to represent the way they decomposed 6. Next, they rearrange those six stick figures, fill in another equation to represent that grouping, and repeat this process to find all of the ways to decompose 6.

This activity is great for differentiated learning because different students can be working on decomposing different numbers (from 1 to 10). Also, you can set different expectations for how many of the equations each student needs to complete—students can progress from finding only one or two ways to decompose a number to finding all of the ways to decompose the number.

If you are interested in reading more about how to help children learn how to decompose numbers and to join in a conversation about it, you are welcome to visit my blog at http://enjoydoingmath.blogspot.com/.

This product has 66 pages:

Page 1: Title page
Pages 2-4: Notes to the Teacher
Page 6: Play scene: bounce castle and pony
Page 7: Stick figure children
Pages 8-17: One bounce castle/pony worksheet for each of the numbers 1 to 10
Page 18: Birthday cake scene: round cake and rectangular cake
Page 19: Candles
Pages 20-29: One birthday cake worksheet for each of the numbers 1 to 10
Page 30: Clown scene: short clown and tall clown
Page 31: Balloons
Pages 32-41: One clowns worksheet for each of the numbers 1 to 10
Page 42: Piñata scene
Page 43: Pieces of candy
Pages 44-53: One piñata worksheet for each of the numbers 1 to 10
Page 54: Gifts scene: table and bag
Pages 56-65: One gifts worksheet for each of the numbers 1 to 10
Page 66: Summary and copyright page

If you want additional scenes for this same decomposing activity, I have two more sets posted at my TpT store. One set has an animal theme and the other has different modes of transportation.

Enjoy!
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66 pages
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