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How do birds fly? Part 3

Learn about the migration and reproduction of birds.

The physics of submarines

This lesson presents the concepts of density and buoyancy through the operation of the submarine.

How does soil form?

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

And yet it moves Part 1

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

How do we hear?

This lesson helps you understand the process of hearing.

Where does water come from?

Let's follow the journey of water and find out how it gets into our glasses.

What size are bacteria?

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

Time

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

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.

Games Playing with sounds

This lesson introduces some basic ideas about sound.

Do you understand what I am telling you?

In this lesson you will learn about the basics of speech perception and language acquisition.

How can humans speak?

This lesson presents the development of human speech and the structure and functioning of the organs of speech.

Is noise harmful?

Noise surrounds us everywhere, but it can be harmful. Let's see how.

Is water essential for life?

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

Can we understand the language of animals?

Find out interesting pieces of information about the communication of animals.

Why was World War I so horrible?

This lesson presents the weapons of World War I.

The secret life of newborns

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

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