The electrical conduction system of the heart

The heart generates the electrical impulses necessary for its own operation. The graphic representation of the electrical activity of the heart is the...

The Alhambra in the 16th century (Spain)

The name of this magnificent palace complex originates in Arabic and means 'the red one'.

Respiratory system

The respiratory system is responsible for the intake of oxygen and the release of carbon dioxide.

The human eye

The eye is one of our most important sense organs. When stimulated by light, electric impulses are produced by its receptors.

BR Standard Class 3 2-6-2T steam locomotive

A type of steam locomotives used by British Railways were manufactured in the 1950s.

The White House (Washington, DC, 1800)

One of the best known buildings in the world, this is the residence and office of the President of the United States.

The Rutherford experiment

The Rutherford Experiment proved the existence of positively charged atomic nuclei. The results led to the elaboration of a new atomic model.

Countries of the World

Learning about the geographic location, capitals and flags of the world´s countries through exercises in three levels of difficulty.

From the Stone Age to the Iron Age

This animation demonstrates the development of the axe throughout archaeological periods.

Lightning

Lightning is a sudden electrostatic discharge accompanied by a sound known as thunder.

Common bottlenose dolphin

Bottlenose dolphins are sea mammals which use ultrasound for orientation.

Human body (female)

This animation introduces the most important systems of the human body.

How does it work? - Water tap

This animation demonstrates the functioning of the 3 basic types of water tap.

Construction of cars

This animations demonstrates the exterior and interior construction of cars, as well as their operation.

The science of candles

Candles have been used for lighting since ancient times.

Globe Theatre (London, 17th century)

One of the directors of the circular, open-air Renaissance theatre in London was William Shakespeare.

Ancient Egyptian house

An average Egyptian dwelling consisted of regularly arranged rooms.

Watt´s steam engine (18th century)

The steam engine, perfected by the Scottish engineer James Watt, revolutionised technology.

The Sun's path above the major circles of latitude

The apparent movement of the Sun is caused by the Earth's rotation around its axis.

Operation of river locks

River locks make rivers with great level differences safe for boating.

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