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Item description

The geometric solids are another of Montessori’s well-known didactic materials to help children experience 3-dimensional geometry. They are used:

  • To refine the stereognostic sense.
  • To bring awareness of three-dimensional/solid shapes to objects in the environment.
  • To move from sensorial to abstract geometry.
  • To review the names of the solids and their properties.
  • To prepare for the derivation of the formula(s) for volume.

This resource includes:

  • Geometric solids material analysis
  • A series of 4 Presentations
  • Detailed step-by-step presentation instructions
  • Dozens of step-by-step photographs
  • With each presentation is given the purpose, direct aim(s), indirect aim(s), control of error, and points of consciousness

This resource is useful for children from ages 4-9 years of age and up.

You can use the Geometric Solids after the Constructive Triangles and Geometry Cabinet have been introduced and the child is familiar with the names of the shapes.


Created by a Montessorian with many years of curriculum development experience! Save yourself LOADS of time and research. I have used these presentations with my own class.


*Homeschoolers and regular classroom teachers can use these lessons with printable triangles if the wooden sets are not available. These printable sets are not included in this resource, but are readily available for FREE online. Please message me if you have any questions; I am happy to help.

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