Hierarchical and geometric representation of numbers in bases 2 and 3 for counting forwards and backwards, and for converting numbers from base 10 into these bases and vice versa. Chart ordered separately.
Data sheet
- Tranche d'âge
- 6-12 ans
- Longueur
- 23.5 cm
- Largeur
- 20.5 cm
- Hauteur
- 12 cm
- Poids
- 2.4kg