Master class for children on assembling polyhedron models at the Science Festival in Mendeleevo 02/06/2021

The traditional annual science festival is no exception this year.

Everyone could assemble the models of polyhedrons with their own hands.

Archimedean Polyhedra. How to make pdf template

Archimedes, a scientist from Ancient Greece, discovered thirteen types of polyhedra, now called Archimedean solids, referred to as semi-regular polyhedra.

Merkaba - energy polyhedron

According to some spiritual teachings, a polyhedron already familiar to us — a compound of two tetrahedra (stellated octahedron) — is not just a geometric form. This form is endowed with powerful energy and maybe even supernatural properties.

Nets solids of revolution. How to make pdf template

What happens if a flat geometric shape, such as a rectangle, begins to rotate rapidly relative to one of its sides? We create a new geometric solid in space by rotation.

Mathematical properties of the Platonic solids

One can specify the following mathematical characteristics in each of the five Platonic solids:

1. The radius of the sphere circumscribing the polyhedron;

2. The radius of the sphere inscribed in the polyhedron;

3. The surface area of the polyhedron;

4. The volume of the polyhedron.

The star of hope

A star is an image of divine idea and will; due to them, our Light and Universe were created and started to exist in Space.

Polyhedra in nature

In the natural environment, regular polyhedra can be found in the form of crystals (minerals).

The form of the tetrahedron is transmitted by antimony sodium sulfate.

Divide the icosahedron (into parts)

Is it possible to make up an icosahedron using more simple polyhedra?

Escher mosaic polyhedra

With the same pattern repeating on each polyhedrons face, it is possible to create an alternating combination of patterns on a three-dimensional geometric solid.

Prince Rupert's Cube

IIn issue 25 of the Magic Edges, we noticed that we get a cross-sectional cut at the cut point by cutting a cube with a plane.

And this geometric shape will change depending on the angle of inclination of the plane.

Dudeny dissection

Is it possible to cut a triangle into such several parts so that one can put a square together?