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, and two dark green blocks are as high as one yellow block, and so on. There are several additional products which complement the Stepped Counting Blocks. 100 blocks in a wooden frame. Materials: lime wood, non-toxic water based colour stain/non-toxic plant based oil finish. Size: frame length 22,5cm, single blocks 2cm thickness, blocks 1-10cm.