MDF Wheel, 6mm thick fibre board, 74mm and come with drilled centre holes for 4mm dowel, There are also available in 54mm and 74mm or you can order a mix bag
Magic Blocks Kit is used to explore basic mathematical operators and concepts using wooden blocks. Contains 9 rectangular blocks of steadily increasing height, pen, labels, and instructions. Hands-on activities aid in the conceptualization of abstract mathematical ideas