Learn the concepts of size, how to arrange objects by a single characteristic and by several characteristics. Pay attention to the differences in size, and sometimes to the differences in colour as well. The objects are made in such a way that while classifying by size, the colour differences are not beneficial and neither are the size differences while classifying by colour. The child learns to switch from one characteristic to another.
4 sequences of objects increasing in length, thickness, height, or width
16 plastic assignment cards
wooden box (30 x 30 x 7 cm)