Wooden Numbers

Natural wood numbers to learn mathematics in a fun way. Each number has a height equivalent to its digit. Two numbers 1 lying down measure the same as a number 2, and three numbers 3 plus a number 1 measure the same as the number 10. So kids can check if their addition and subtraction is right by themselves, and when they get tired of playing with manipulative math they can always play stacking and building with the wooden numbers.