An original and systematic work that aims at a pleasant and creative introduction of the child of preschool and primary school age to the numbers of the first ten. The appropriately selected exercises stimulate the child's combinatorial and perceptual ability, sharpen their imagination, and enhance their disposition for continuous and creative work. The systematic approach, the original and functional organization of the material, and its support with visual material (cards) make it an excellent proposal for all interested parties, parents and educators, for an effective preparation of the child in their first steps towards the introduction to mathematics, and specifically to the first ten.