This wooden Add and Subtract Box features brightly coloured individual wooden tiles, with a combination of addition and subtraction sums from numbers 1-9. Introduce numbers at an early age - lots of simple sums can be worked out and with repeated use, basic numeracy will become second nature! The practical wooden tray is ideal for storing all the pieces inside. Helps to develop dexterity and concentration. Made from high quality, responsibly sourced materials. Consists of 81 play pieces.