This Computation Study Box is a visual way of teaching maths calculations to your kids. Your kids can actually pick up and place the pieces in the correct and logical order and understand basic math operations. Teach your kids with number pieces or with colorful rods – either way, it is an interesting way to learn numbers, basic mathematical operations and identify colors. Eco-friendly wood with bright, non-toxic paints appeals to kids and parents. This study box includes 2 pcs for each 0-9 numbers, Operation symbols and 4 color rods (10 Pcs per color).