Pyramid develops size consistency, concept and successive arrangement of decreasing size.  Also useful for training elbows and shoulders. * Pyramid is created by stacking 10 stacked round blocks of different sizes  on a central peg. 
Blocks: Wooden blocks have diameters from 5 cm to 17 cm. Central pin: Chrome plated, 40 cm (16 in) high. Base: Laminated and varnished wooden base, 35 mm thick and 18 cm in diameter. The blocks are laminated on both sides with different colors. The outer ring of the blocks is enameled in different colors and numbered.