Odd or Even to 20 Activity
This odd or even to 20 activity lets 1st-3rd grade children pair counters on number cards and sort them onto an Odd or Even mat. Answer key included, so checking the sort is quick.
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About this resource
Description
Is a number odd or even? This odd or even to 20 activity helps children find out by pairing objects. When a group of objects can be put into pairs with none left over, the number is even. When one object is always left over, the number is odd. Pairing counters to 20 builds a strong picture of what odd and even really mean, a key 2nd grade math standard.
Children cut out 12 number cards. Each card shows a number and its counters lined up in pairs, two by two. Children count the counters, look for a leftover, and sort each card onto the Odd row or the Even row of the sort mat. Then they write each number on the recording sheet and check their work with the answer key. This odd and even sorting game fits a math center, a small group or partner practice.
What’s Included
- A How to Use page with simple steps, materials and prep tips
- 12 number cards with counters in pairs
- A two-row Odd and Even sort mat
- A recording sheet
- A 2nd grade practice worksheet with ten numbers to sort
- Answer keys for the cards and the practice page
Why Pairing Helps Kids Learn
First, pairing turns an abstract rule into something children can see and touch. Second, sorting many numbers helps children notice the pattern of odd and even numbers as they count. Third, the practice page lets children use the rule with numbers alone, without counters, which shows they truly understand it.
Ideas for Teachers and Parents
Model one card with real blocks before children play. At home, use the odd or even to 20 activity with a handful of beans or buttons and ask your child to pair them up. For a challenge, ask children to write each even number as a double, like 8 is 4 and 4.
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