The Cylinder Blocks consist of 4 blocks per set, each block with 10 knobbed cylinders :
First Block – progress in height and diameter from small to large.
Second Block – progress in diameter from thin to thick.
Third Block – decreases in height at the same time increase in diameter from tall and thin to short and thick.
Fourth Block – increases in height from short to tall with the diameter remaining the same.
The Blocks provide experience in visual discrimination for the time ; at the same time by grasping the knobbed cylinders the child will indirectly develop the three finger grip.
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