The set consists of:
- white charted board;
- a box with blue and red slats;
- a box of wooden slats.
The study of this material helps children to master the basic mathematical actions collecting and subtracting through wooden colored slats.
Size of the box: 35.5 x 28.5 x 8.5 cm, weight: 1 kg.
Suitable for children over 4.5 years of age. 
