A self-correction game for building number wheels from 10 to 20 by matching 4 different representations: written figures, fingers, number cards, number beads.

• Count a quantity.
• Recognize and match different number representations.
• Memorize numbers.

Children need to find the four representations of the same number to form a wheel, and then turn it round for self-correction. They may follow an ascending/descending order or find a specific number.

Technical specifications

The box contains:
• 11 wheels with numbers pre-cut into 4 pieces (44 pieces in total). Odd numbers in red; even numbers in blue.
• Ø wheel: 13 cm.