Knobbed Cylinder Blocks – Set of 4

The Knobbed Cylinders are designed to assist children in making distinctions in their immediate environment. This material engages the senses of touch & sight.  It comprises of 10 different cylinders with knobs used to hold each object. Each cylinder fits into a specific hole on a solid block of wood. Each Knobbed Cylinder block differs as follows: Block One: varies in height & diameter,  ie. the tallest cylinder also has the widest diameter. Block Two: variation is based on the diameter of each hole. Block Three: varies in height & diameter, ie. the tallest cylinder also has the thinnest diameter. Block Four: variation is based on the height of the cylinders.