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For learning and writing numbers to the first mathematical operations... Count, classify and then calculate are the aims of this complete range of materials for manipulation that can be used by the student on his/her own or in a group.
A very ingenious calculating tool for working with numbers from 1 to 20 then 1 to 100, and performing calculations. Just by rotating them, the grey beads become visible and marked with a number corresponding to their position in the number sequence. Seeing the number sequence and counting 2 by 2, learning to build ten (5 + 5), adding or subtracting are just a few of the aims of this abacus.