Teach the foundational concept of 10 with ten-frames! These 10-frame answer boards feature a magnetic design to let students quickly attach counters onto the surface then raise boards to show their answers. Write-and-wipe surface contains 10 frames on one side and double 10 frames on the other. Answer boards are perfect for reinforcing counting skills, one-to-one correspondence, base 10, place value, number patterns, operations and more. Set includes boards, magnetic counters and activity guide. Answer boards are designed for children ages 5 and above.