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Let's make musical instruments.
This lesson introduces some basic ideas about sound.
In this lesson you will learn about the basics of speech perception and language acquisition.
This lesson presents the development of human speech and the structure and functioning of the organs of speech.
This lesson helps you understand the process of hearing.
Noise surrounds us everywhere, but it can be harmful. Let's see how.
Find out interesting pieces of information about the communication of animals.
Let's find solutions to the global environmental issues!
Simple, straightforward information about the coronavirus epidemic.
Az „egészség” és a „betegség” a szervezet két ellentétes állapotát fejezi ki, ezekről az állapotokról szól a tananyag.
Arthropods can be found on shores, on the surface of waterbodies and underwater.
Learn about the concepts of floor plan, map, and map scale.
In this lesson, you will learn how we can find our way around.
A lesson about the various types of maps.
A lesson about the landforms and continents of Earth.
Numerous insects live on tree trunks, in the foliage and on the ground. Let's learn about some species.
In this project, you will perform experiments with water.
Let's learn about the various types of worms by looking at the characteristics of typical species.
A lesson about the changes that take place in our bodies throughout our lifetime.
In the body, substances are continiuously absorbed and released.