Learn the concept of colours, numbers, letters and shapes while playing
One of the most common types of flatworms.
Spanish conquerors owed their success to their armour and firearms.
Edges, diagonals and faces of a cube can be identified by its vertices.
The Channel Tunnel is a 50.5 km long railway tunnel between the United Kingdom and France, beneath the English Channel.
The Chengdu J-20, also known as Mighty Dragon, is a multiple function stealth fighter aircraft.
Dicotyledons have two embryonic leaves (cotyledons), while monototyledons have only one.
The Möbius strip and the Klein bottle are special two-dimensional surfaces with only one side.
Electric current can be generated by rotating an armature loop in a magnetic field.
One of the most important religious military orders, formed in the era of the Crusades.
The first calendars and time-measuring instruments were already used by ancient Eastern civilisations.
The conic section is a plane curve that is created when a right circular cone is intersected by a plane.
The aircraft manufactured by the British de Haviland company was the world's first mass-produced commercial jetliner.
The design and structure of modern houses play an important role in environmental protection.
Scoliosis is a medical condition in which a person's spine has a lateral deviation.
The fearsome looking Aztec warriors could not stop the Spanish conquistadors with their primitive weapons.
The outcome of one of the greatest battles in the history of the ancient East (fought by the Egyptians and Hittites) was indecisive.
This animation explains the technology of shale gas extraction.
English sailing ships were among the best ships in the 17th-19th centuries.
The Space Shuttle was a manned, reusable spacecraft operated by NASA.