Alexander Graham Bell

Learn about the life and work of Alexander G. Bell

I study at home: Freshwater and waterfront animals

Learn about animals inhabiting rivers, lakes and their shorelines.

Where does energy come from?

A lesson about the most common energy sources.

The theory of relativity

The theory of relativity explained like you've never seen before.

Living fossils

Learn about animal species that emerged in the distant past and stayed mostly unchanged

Geothermal energy

Where does the energy of Earth come from and how can we use it?

The one who came, saw and conquered: Julius Caesar

A lesson about the personality and legacy of Julius Caesar.

Why does your hair stand on end?

Let's perform experiments related to electric charge.

Water below the surface of Earth

A lesson about the various types of underground waters and their properties.

How do we see? The human eye

This lesson presents the anatomy of the eye, the mechanism of vision, and common vision problems.

Mineral or rock?

In this lesson you will learn more about minerals and rocks.

How is the aluminium foil made?

This lesson presents the properties, production, and use of aluminium.

Newtonian mechanics

What happens when a rocket is launched? Why do we fall when the bus brakes? Let's learn about the laws of motion.

The Sun - a source of energy

In this lesson you will learn about the Sun and how solar energy can be used.

Pitch and frequency, Part II

Experience the relationship between pitch and frequency through measurements.

The cabbage family

A lesson introducing various plants in the cabbage family

There was a time when...

Most of us are attached to the place where we live. We can discover changes day by day.

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