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Geometric Solids

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Geometric Solids
Sensorial - Visual Discrimination of Form
Geometric Solids.jpg
Level Primary
Age 3.5 - 6
Prerequisites discrimination of form
Pink Tower
Knobbed Cylinders
Broad Stair
Materials Ten geometric solids:
rectangular prism
triangular prism
square based pyramid
triangular based pyramid

Use of this material makes the child familiar with 3 dimensional geometric shapes and teaches their names. This activity prepares the child for geometry.


Introduction to the solids

  1. Select three solids

Identification by touch alone

Introduction to the bases

Solids with bases

Points of Interest

Control of Error

Variations and Extensions



Geometric Solids labels.jpg

Make Your Own

This material would be difficult to make on your own without some pretty good woodworking skills. There are, however, similar, far less expensive sets of geometric solids for sale online that were designed to be used in math classrooms. These are a bit smaller than the Montessori version. Neither set has an ovoid, but as the author of one blog pointed out that an ovoid might be easy to find in a craft store after Easter.