Pitch and frequency, Part I

Experience the relationship between pitch and frequency through measurements.

Which came first, the feather or the bird?

This lesson presents which animals developed feathers during the course of evolution.

Where exactly?

Learn how to specify a location in a playful manner!

Let's go on a safari!

In this lesson you will find out where savannahs are located on Earth and will learn...

How do birds fly? Part 1

The plumage and streamlined bodies of birds play a key role in flying.

Is all that chemistry dangerous?

This lesson helps to explain chemical reactions.

Planets in our backyard

The lesson illustrates the size of the planets in the Solar System and the huge distances...

How do animals see?

This lesson presents the vision and the evolution of eyes of animals.

The Cartesian and the polar coordinate system

Practise how to define a specific location using coordinate systems.

Do fish drink?

In this lesson you will learn more about the life of fish.

Vitamins

In this lesson you will find information about the discovery and classification of...

Do storks really deliver babies?

This lesson presents everything related to human reproduction.

Do plants move?

Plants also move. Although they do not have muscles, they can change the position of...

What can the Sun's rays be used for?

This lesson presents how solar energy can be utilised.

How fast are your reflexes?

The lesson introduces you to our innate and learnt reflexes.

Let’s get to know the sources of sound!

Let's use musical instruments and our vocal cords as sources of sound.

Are there mutants among us?

This lesson presents mutation types, their frequency and underlying causes.

How is the human body built up?

Learn how the human body is built up and about the differences between men and women.

Join the caravan!

This lesson presents deserts and their flora and fauna.

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