Mini Knobbed Cylinder Set of 4

Set of 4 blocks with cylinders varying in height and / or diameter in each block. The purpose of this product is to develop the child's visual discrimination of size. Indirectly, to prepare the child for the writing ,through the handling of the cylinders by their knobs. Indirectly, to prepare the child for later work in mathematics, through observation of the regular differences in the cylinders.