Noise surrounds us everywhere, but it can be harmful. Let's see how.
Let's make musical instruments.
Find out interesting pieces of information about the communication of animals.
This lesson helps you understand the process of hearing.
This lesson presents the development of human speech and the structure and functioning of the organs of speech.
In this lesson you will learn about the basics of speech perception and language acquisition.
This lesson introduces some basic ideas about sound.
Let's find solutions to the global environmental issues!
Simple, straightforward information about the coronavirus epidemic.
“Health” and “illness” refer to two opposite states of the body. This lesson is about these states.
There are plenty of weeds and herbs on fields, agricultural areas and even in carefully tended gardens.
A lesson about the landforms and continents of Earth.
Albert Einstein’s life is surrounded by numerous legends, but the facts about him are also quite interesting.
In this lesson, you will learn about buoyancy and the conditions of floating for objects.
Learn about the inner forces of Earth and the formation of volcanoes.
Let's follow the path of water in plants from the roots to the leaves
Humans produce an increasing amount of waste. A change in our lifestyle could significantly reduce the production of household waste.
Get to know some of the plants that are grown in agricultural fields.
Apartments are like living organisms, there is a constant exchange of energy and materials between apartments and the environment.
How are earthquakes formed? What keeps tectonic plates in motion?