Contains 1) 21 A4 pages of knobless cylinder extension. 7 patterns x 3 color (Red, green and yellow)

Montessori Koloranto DIY game - with instructions on how to prepare the game for use and suggestions on how to play.

blogged about here jojoebi.blogspot.com/2008/04/knobless-cylinders.html

Inspired Montessori and Arts at Dundee Montessori: Ode to the Knobless Cylinders

Fun and easy hands-on invitations to learn and play Thanksgiving Kids Activities and Crafts for toddlers, preschoolers and kindergartners.

Montessori Sensorial Knobless Cylinders teach toddlers preschoolers to discriminate using visual sense height and diameter of solid 3D shapes.