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Noise surrounds us everywhere, but it can be harmful. Let's see how.
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.
Find out interesting pieces of information about the communication of animals.
A lesson about the benefits and limitations of genetic engineering.
Let's find solutions to the global environmental issues!
Simple, straightforward information about the coronavirus epidemic.
A lesson about the most common energy sources.
Over millions of years, even mountains are transformed.
In this lesson, you will find answers to questions about the pressure of solids, liquids and gases.
In this lesson, you can learn about the famous Russian writer.
The theory of relativity explained like you've never seen before.
The Renaissance, which originated in Italy, was inspired by Ancient Greek and Roman art.
How to reduce energy use at home
A summary of the physics of waves for high school students.
Learn about animals inhabiting rivers, lakes and their shorelines.
In this lesson, you can learn about various herbs and spices.