Perimeter, area, surface area and volume

This animation presents the formulas to calculate the perimeter and area of shapes as well as the surface area and volume of solids.

Optical illusion

The information gathered by the eye is misinterpreted by the brain.

Geometric transformations – rotation

This animation demonstrates geometric rotation, a type of geometric transformation both in plane and space.

Chess games

Chess games can help to develop logic skills.

Geometric transformations – reflection

This animation demonstrates geometric reflection, a type of geometric transformation both in plane and space.

Geometric transformations – translation

This animation demonstrates geometric translation in both plane and space.

Kepler´s laws of planetary motion

The three important laws describing planetary motion were formulated by Johannes Kepler.

3D puzzle

This exciting and colorful game is designed to develop spatial perception. You can check your solutions using isometric views.

Three-dimensional Cartesian coordinate system

3-dimensional Cartesian coordinate system with illustrations and exercises that develop spatial perception.

Scale exercises

An interesting logical exercise: you have many weights that look the same, you have to find the only one that is different.

Notable products

A spectacular demonstration of algebraic expressions.

Solids of revolution

Rotating a geometric shape around a line within its geometric plane as an axis results in a solid of revolution.

What is the time?

A game to practice the use of analog and digital clocks.

Conic sections

The conic section is a plane curve that is created when a right circular cone is intersected by a plane.

Non-orientable surfaces

The Möbius strip and the Klein bottle are special two-dimensional surfaces with only one side.

The first days in school

Learn the concept of colors, numbers, letters and shapes while playing

Volume of a tetrahedron

To calculate the volume of a tetrahedron we start by calculating the volume of a prism.


Regular dice can be used for solving statistical and probability exercises.

Platonic solids

This animation demonstrates the five regular three-dimensional (or Platonic) solids, the best known of which is the cube.

Cube (exercises)

Edges, diagonals and faces of a cube can be identified by its vertices.

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