Here is a great tool to help your students make all of the combinations of 6, 7, 8, 9, and 10. I use red/yellow counters and have students begin with all of the same color facing up. They color the dots on the paper and write the number sentence to match. They then turn one counter over to make a new combination. They continue like this until all combinations are made. To differentiate: For those not ready, you do not have to have students write the number sentences. For those that need an