Product description:
The set includes a board divided into square boxes by blue lines (216). Along the board’s upper edge are printed numbers from 1 to 18. The numbers 1-9 are red and the numbers 10-18 are blue. A red line runs through the centre of the board, right after the number 10, dividing it into two parts. This set also contains a box without a lid, inside of which 2 sets of slats in red and blue can be found. They symbolise the numbers from 1 to 9. The red slats are divided into units by vertical lines. The slats on the right are marked with numbers: the shortest - 1, the longest – 9. The board allows the students to develop and improve the ability to add the numbers in the range from 1 to 18 and it also helps to understand the principle of commutative addition.
18 slats, dim.: 2 x 2 cm ( the shortest), 18 x 2 cm (the longest); 1 board, dim.: 40 x 0,5 x 30 cm; 1 box for the slats, dim.: 21 x 4 x 7,5 cm; material: wood; age: 5+
Weight: 0.80 Kg
Polska wersja
