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.

Project Garage Band

Let's make musical instruments.

How can solar energy be utilised?

This lesson presents the possibilities for utilising solar energy.

How can hydropower be utilised?

This lesson presents the possibilities for utilising hydropower.

What do mixtures consist of?

This lesson presents different types of mixtures and how the substances in the mixtures...

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...

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.

What do you know about speed?

This lesson presents the concept of speed.

The industrial revolution and its consequences

The lesson makes a thorough presentation of the period of the Industrial Revolution and...

How can wind energy be used?

This lesson presents how wind energy can be utilised.

How did we conquer space?

This lesson presents the history of human space flight.

Why was World War I so horrible?

This lesson presents the weapons of World War I.

Rulers of the sea

Relive the naval battles in this lesson.

How can human speak?

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

How do we hear?

This lesson helps you understand the process of hearing.

Is noise harmful?

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

Deep in the Jungle

In this lesson you will find out where tropical rainforests are located on Earth and...

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