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How to play?
1. This series of prisms demonstrates to the child the change in width (breadth), while the length remains constant.
2. Practice with the Brown Stair indirectly prepares the child for concepts in plane geometry, area, and volume.
3. The prisms are crafted in precise progressions from 1 x 1 x 20 cm to 10 x 10 x 20 cm.
WHY PLAY IS IMPORTANT TO CHILDREN
WHAT MAKES A GOOD TOY
OUR CERTIFICATIONS
