MAB or Base Ten Blocks for touch

thingiverse

MAB, Base Ten Blocks or Diene Blocks are a common classroom tool used to learn basic mathematical concepts including units, addition, subtraction, multiplication, number sense, etc. Standard MAB blocks have indented grooves to indicate divisions into single units, however these can be difficult to feel for children who are blind or have low vision. These blocks have been designed with outward grooves for easier counting by touch. The blocks are available either with a flat base (for easier printing) or with an indented base (for easier stacking). Take your pick!