A game to practise the use of analogue and digital clocks.
The withdrawal reflex is a spinal reflex that ensures moving away from potentially damaging stimuli.
This animation presents the states and state capitals of Austria.
This animation demonstrates how a CRT television works.
This animation demonstrates how mobile phones work.
A type of rotary engine of high efficiency
This animation explains how a plasma display television works.
The dromedary is an indispensable animal for inhabitants of the deserts.
A type of prehistoric reptile having bony plates on its back, which aided thermoregulation.
A liquid-crystal display utilises the light modulating properties of liquid crystals.
Capacitors store electrical energy in the form of electric charge.
The church consecrated to Saint Basil was commissioned by Ivan the Terrible.
An extinct group of Cephalopoda, with solid external skeletons. They are excellent index fossils.
A mammal with features typical of reptiles: it lays eggs and has a cloaca.
Adrenaline, also known as epinephrine, is a hormone produced in our body in stressful situations and plays an important role in the fight-or-flight response.
As opposed to opencast mines, in underground mines the layers covering coal are not removed, coal is extracted from mine shafts.
Before the American Civil war the use of slaves on plantations was typical in the Southern states.
This animation demonstrates different types of soil.
The archaeopteryx shows characteristics of both birds and reptiles. It is probably the ancestor of birds.
The dentition of different species of mammals reflect their feeding habits.