Set of 100 coloured wooden blocks in a wooden frame. These blocks introduce an exciting way for children to discover the world of numbers and learn the colour sequence of the rainbow. Through tactile touch, each number can be counted by feeling with the hands. Make the size of the numbers visible: Two small turquoise blocks are as high as one dark green block, two dark green blocks are as high as one yellow block, and so on. Made from lime wood and coloured with non-toxic water based dyes. Blocks 1-10cmL, single block 2cm thick. 3yrs+.