Knobless Cylinders - 4 Sets.
4 sets of 10 cylinders each varying in height and/or diameter in each set. Each set is in a separate box with the lid painted the same color as the cylinders-red, green, yellow and blue. Spare pieces
Activity:
The knobless cylinders are the final stage (application) in the dimensional material where the child places in order, the sets of cylinders based upon his abilities to discriminate. The cylinders have interrelationship in size that is revealed to the child as he works with the sets in combination. The 4 different Colours assist the child to make his discrimination.