By the end of second grade, students will mentally know sums to 20.
It seems I spend all year getting my class ready for this standard. I rotate my different centers through out the year, and yet the keep asking for new ones.
Here is a center for the kids to see how different addends can equal the same sum, helping them with their mental strategies.
The honey pots all have a sum. The kids then must match the bear cards with those sums to the pots. There is also a recording sheet for them to write their answers on.
This center meets these common core standards: 1.OA.C.5 1.OA.B.3 2.OA.B.2
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