10 wooden pieces to refine dexterity and initiate reading of the assembly diagram. 10 pieces and 1 varnished wooden tray. Thickness base: 1 cm; Thickness piece: 0.6 cm.The assembly steps are presented on the back of the tray. Develops construction skills and visuospatial skills. Introduces you to reading simple diagrams and planning the assembly steps (assembly steps on the back of the board).