The building commissioned by Pompey the Great was the first permanent theatre in Ancient Rome.
One of the best known buildings in the world, this is the residence and office of the President of the United States.
This animation demonstrates the structure and operation of hair dryers.
A spectacular demonstration of algebraic expressions.
The animation shows five outstanding works in the history of sculpture.
Majestic even in its ruins, this city was the largest and most populous settlement in the pre-Columbian Americas.
Cereals are species of grasses cultivated for their edible grains.
The Rutherford Experiment proved the existence of positively charged atomic nuclei. The results led to the elaboration of a new atomic model.
3-dimensional Cartesian coordinate system with illustrations and exercises that develop spatial perception.
This animation demonstrates the development of the axe throughout archaeological periods.
Lightning is a sudden electrostatic discharge accompanied by a sound known as thunder.
This animation compares the life cycles of mosses and ferns, helping to understand the general life cycle of plants.
Chess games can help to develop logic skills.
The two groups of angiosperms are monocots and dicots.
As a result of the revolutionary advances in the Neolithic, settling human communities established the first lasting settlements.
This animation demonstrates how a turbojet engine works.
The three important laws describing planetary motion were formulated by Johannes Kepler.
The popular model of the American automobile factory was the first mass-produced car in the world.
This animation shows the electron configuration of the calcium atom.
Carved into a granite cliff, the sculptures of the Mount Rushmore National Memorial depict four great United States presidents.