The 12 discs that fit into this fascinating teaching clock have dots representing numbers on their face and a textured finish on the reverse. Children can complete the clock by either matching the dots to the numbers printed on the clock face or match the colour of the base to the 12 different colours indented on the clock face. Even more interestingly, the discs can be correctly located by touch alone - the textured finish of the indent matches the finish on the bottom of the disc. Size 250 x 250 x 30mm