Description:

Knobless cylinders are a Montessori sensorial material used to help children develop visual discrimination skills: 

• What they are

  The cylinders come in four boxes, each containing ten colored cylinders. The cylinders are different in height and diameter, and each set of cylinders is a different color: 

  • Green: The cylinders decrease in diameter but increase in height 

  • Blue: The cylinders decrease in height but remain the same diameter 

  • Red: The cylinders decrease in diameter but remain the same height 

  • Yellow: The cylinders decrease in both diameter and height