Grades K & up. Teach the foundational concept of 10 like the most effective Asian math programs do with ten frames! Students place magnetic counters on boards, then raise boards to show their answers. Magnetic, write and wipe boards feature 10-square frame on one side, double 10 on reverse. Includes 4 boards; 100 double-sided, foam magnet counters (red and yellow); and Activity Guide. Boards measure 7"L x 6.25"H.