As children are tiling the empty square arrays with four different colours and sizes wooden tiles, they develop their mathematics and spatial abilities.The wooden storage box (32 x 32 x 4 c"m) contains: a wooden board with a spinner, 4 wooden playboards ( 20 x 11 c"m, 7 m"m thick) with 2 empty squares on each; 156 wooden tiles with 4 colours and 8 sizes.