The ear and the mechanism of hearing
The ear converts the vibrations of air into electric signals which are then processed by the brain.
Acropolis (Athens, 5th century BC)
The world's most famous citadel, the Acropolis of Athens was built in the 5th century BC, during the Age of Pericles.
Colosseum (Rome, 1st century)
The most famous and most magnificent amphitheatre of Rome was built in the 1st century.
Nizwa Fort (Oman, 17th century)
The round tower of the largest fort in the Arabian Peninsula had an ingenious defence system.
Moon landing: 20 July 1969
Neil Armstrong, one of the crew members of Apollo 11 was the first man to set foot on the Moon.
Hagia Sophia (Istanbul)
The church of the 'Holy Wisdom', built in the Byzantine Empire, had been one of the largest religious buildings until 1935, when it was converted into a museum.
Kaaba (Makkah)
Located in the Grand Mosque of Makkah, the Kaaba shrine is the most sacred site of Islam.
Perimeter, area, surface area and volume
This animation presents the formulas to calculate the perimeter and area of shapes as well as the surface area and volume of solids.
Interesting geography facts – Physical geography
This animation presents some interesting facts in physical geography.
Leonardo da Vinci’s workshop (Florence, 16th century)
Visit the workshop of the Renaissance polymath and his most influential inventions and works of art.
The first voyage of James Cook
James Cook's legendary journey around the world proved to be enormously valuable for science.
The Forbidden City (Beijing, 17th century)
The Forbidden City is one of the most magnificent and mysterious monuments of imperial China.