A presentation of the major administrative units of China.
Solid, white substance, a constituent of vegetable oils and animal fats.
The range of applications of unmanned aerial vehicles ('drones') keeps growing.
This scene presents the location, anatomy and functioning of the central organ of the human circulatory system.
Frank Lloyd Wright's well-known work is a masterpiece of modern organic architecture.
This 3D scene presents the flora and fauna of the last period of the Palaeozoic Era.
Enzymes are protein molecules catalysing biochemical reactions. Their activity can be regulated.
This 3D scene presents the steps of the cement manufacturing process.
The vacuum cleaner creates a partial vacuum and sucks up dust with the help of the incoming high-pressure air.
By positron emission tomography (PET), we can obtain visual information on our internal organs without making any surgical incisions.
Practise the German alphabet and form words from the letters.
This scene explains the structure and functions of the bones.
Colourless, odourless liquid produced by dissolving carbon dioxide in water.
The adrenal glands are responsible for maintaining homeostasis and producing a rapid response in stressful situations.
There are two basic cell types: prokaryotic and eukaryotic cells.
Practise the Russian alphabet, build words from letters.
Practise the English alphabet, build words from letters.
Structures consisting of enormous stone blocks, dating back thousands of years, are monuments of megalithic cultures.
This stunning castle is situated in northern Croatia.
Learning about the geographic location, capitals and flags of Asian countries through exercises with three levels of difficulty.