Dogs are our loyal companions. Learn about their anatomy and behaviour.
Houseflies are among the best-known animals, they can be found in every region inhabited by humans. Let's learn about these arthropods.
This lesson presents the structure and functioning of the human urinary system.
A lesson about walnut trees and walnut fruits.
This lesson presents the production of waste water, its treatment and environmental impact.
Learn about the past and traditions of education.
Learn about the harmful effects of smoking.
In this lesson, you will learn about buoyancy and the conditions of floating for objects.
Numerous insects live on tree trunks, in the foliage and on the ground. Let's learn about some species.
A lesson about the various types of physical interactions.
A digital lesson about the colourful culture of the Inca Empire.
Saving energy is a task for everyone, because the energy consumption of the Earth’s population is increasing very fast and it can soon exceed the Earth’s...
Albert Einstein’s life is surrounded by numerous legends, but the facts about him are also quite interesting.
In this lesson, you will learn how we can find our way around.
How are earthquakes formed? What keeps tectonic plates in motion?
Learn about the inner forces of Earth and the formation of volcanoes.
We must live in such a way that our descendants can live in the future too.
Only communities can make significant changes that contribute to a sustainable development.
Arthropods can be found on shores, on the surface of waterbodies and underwater.
Get to know some of the plants that are grown in agricultural fields.