The quest for the philosopher's stone.

In this lesson you will learn about the mysterious world of alchimists.

How did we conquer space?

This lesson presents the history of human space flight.

The pharaohs of Ancient Egypt

The ancient Egyptian empire was led by pharaohs, considered sons of the Sun god.

Am I healthy? Can I be ill?

“Health” and “illness” refer to two opposite states of the body. This lesson is about these states.

How can wind energy be used?

This lesson presents how wind energy can be utilised.

Are there purple cows?

Cattle is a large, domesticated vertebrate. Let's learn more about it.

The industrial revolution and its consequences

The lesson makes a thorough presentation of the period of the Industrial Revolution and of its social and economic implications.

I study at home: Waterfront plants and their uses

In this lesson, you will learn about waterfront plants and what they can be used for.

Can chickens fly?

A lesson about the anatomy and lifestyle of chickens.

The secret life of newborns

Learn more about the early stages of human development with this lesson.

User manual

A guide about the meaning of icons found in digital lessons and the possibilities of using them.

Why was World War I so horrible?

This lesson presents the weapons of World War I.

How do single-celled organisms move?

Let's catch a glimpse into the world of microscopic unicellular organisms!

Saliva, a versatile body fluid

In this lesson you will learn more about this special liquid.

The Doppler effect

This lesson helps to understand the Doppler effect.

Vitamins

In this lesson you will find information about the discovery and classification of vitamins as well as about illnesses caused by vitamin deficiency.

Time

In this lesson you will familiarise yourselves with the concept of time.

What size are bacteria?

This lesson presents the structure and classification of bacteria and the role they play in our lives.

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