The Battle of Gaugamela (331 BC)

The battle, that is considered to be a tactical masterpiece, meant a decisive victory for Alexander the Great against Persia.

Angle of inclination of lines and planes

This animation demonstrates the angle of inclination of lines and planes in various positions.

Solids of revolution (exercise)

An exercise about the generation of solids of revolution.

Solids of revolution (rectangle)

Rotating a rectangle around its axes of symmetry or around its sides results in solids of revolution.

Arch of Titus (Rome, 1st century)

The Arch of Triumph was built at the entrance of the Forum Romanum, to commemorate Emperor Titus’ victory in the Siege of Jerusalem.

Euler's polyhedron formula

The theorem formulated by Leonhard Euler describes one of the basic properties of convex polyhedra.

Drums

Drums are played by hitting the membrane. There are many versions of drums.

German soldier (World War II)

Soldiers of the Wehrmacht in World War II were well-trained and well-equipped with modern weapons.

States and cities of the USA

This animation demonstrates the states and largest cities of the USA.

Shape games

Find views and nets of three-dimensional shapes.

Ara Pacis Augustae (Rome, 1st century B.C.)

The Altar of Peace, commissioned during the reign of Augustus, was one of the most important works of ancient Roman art.

Carbon monoxide (CO) (intermediate)

Colorless, odorless gas, highly toxic to humans and animals in high concentration.

Zither

A zither is one of the typical instruments of Hungarian folk music, played by strumming or plucking the strings.

Oxygen (O₂) (intermediate)

A colorless, odorless gas, an important component of the atmosphere, indispensable to sustain terrestrial life.

Leonardo da Vinci’s inventions - Swing bridge (1487-1489)

Leonardo's creative legacy also includes several projects related to bridges. This unusual swing bridge allowed for undisturbed water traffic.

Leonardo da Vinci’s inventions - Siege engines

Leonardo was not only a master artist, but also an accomplished military engineer.

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