Sound waves all around us • Part 2

In this lesson you will learn more about how sound propagates.

Let's practice positioning!

This lesson helps you understand what geographic coordinates are and how to use them.

Who would make a good sentinel?

Learn about the human sense organs and their functions and how to keep them healthy.

Join the caravan!

This lesson presents deserts and their flora and fauna.

Vitamins

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

The Doppler effect

This lesson helps to understand the Doppler effect.

Saliva, a versatile body fluid

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

Why was World War I so horrible?

This lesson presents the weapons of World War I.

Time

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

Where does waste water go?

This lesson presents the production of waste water, its treatment and environmental impact.

Deep in the Jungle

In this lesson you will find out where tropical rainforests are located on Earth and learn about their fauna and flora.

And yet it moves Part 2

The lesson introduces you to the movement of Earth around the Sun.

And yet it moves Part 1

This lesson provides evidence of Earth's rotation and presents its consequences.

Let's go on a safari!

In this lesson you will find out where savannahs are located on Earth and will learn about their rich fauna and flora.

The secret life of newborns

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

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.

Prehistoric artists

Travel back in time and explore the beginnings of art, familiarise yourselves with the fascinating masterpieces of prehistoric people.

Is water essential for life?

Water is one of the most important substances on Earth. Let's learn more about it.

How does soil form?

This lesson presents soil formation, the components of soil, and soil protection.

The structure of atoms

The lesson introduces you to the components of an atom.

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