These �pop and learn� ten frames are an ideal way for children to learn early number skills. Children can visualize concepts such as number bonds to ten, counting, addition, subtraction, multiplication, division and fractions. Simply pop the bubbles as you go to count, subtract, or create ratios. Multiple boards can be used to teach larger addition or multiplication. The double-sided board features numbers printed on one side and blank on the other. Contains 4 Bubble Boards. Each Ten Frame Bubble Board measures 4�L x 2�H.