This material demonstrates the power of two by its component parts of cubes and prisms, each a progression of squaring the previous piece. It is contained in a hinged wooden box with lid.
Data sheet
- Tranche d'âge
- 6-12 ans
- Longueur
- 12 cm
- Largeur
- 12 cm
- Hauteur
- 11 cm
- Poids
- 780 g