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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.
A lesson about the basics of first aid.
In summer, meadows are full of noisy bugs. Like always, if there are a lot of bugs, there will be a lot of animals feeding on them as well.
There are plenty of weeds and herbs on fields, agricultural areas and even in carefully tended gardens.
In this lesson, you can get to know some interesting facts about flows of fluids and gases.
Learn about the deer and the wild boar, two large animals that inhabit temperate deciduous forests.
How are earthquakes formed? What keeps tectonic plates in motion?
Learn about the harmful effects of smoking.
Albert Einstein was one of the most acknowledged and best-known scientists of the 20th century. Do you know what discoveries he made?
Get to know some of the plants that are grown in agricultural fields.
Learn about the inner forces of Earth and the formation of volcanoes.
Let's learn about the life cycles of stars.