The material consists of 45 wooden spindles placed loose in a box with 9 compartments with the numbers 0 to 9 engraved on the vertical high side, in front of the child using it. The set is completed by 9 red ribbons that are to be used to tie the spindles once they have been correctly grouped in each compartment. All wooden parts are UNI EN 71-3 finished.
From three years onwards this material helps to develop the association of symbols to the corresponding quantity of 1 to 9 represented by loose spindles. This material also introduces the concept of “zero” as an empty set.