This lesson helps you understand the process of hearing.
This lesson introduces some basic ideas about sound.
Find out interesting pieces of information about the communication of animals.
Noise surrounds us everywhere, but it can be harmful. Let's see how.
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.
Let's make musical instruments.
Let's find solutions to the global environmental issues!
This lesson introduces you to the outer planets of the Solar System, that is the giant planets.
In this lesson you will learn about the presence of humans in space in the past, present and future.
This lesson presents interesting facts about reptiles and their life.
This lesson presents the most important milestones in the history of aviation.
A lesson about the special properties of glass, the process of glassmaking and the various types of glass.
This lesson presents the different types of forests and their layers.
This lesson introduces the position and anatomy of the heart, as well as the blood flow and heart sounds.
Find out interesting facts about the anatomy of amphibians and their vital processes.
This lesson is about the sound waves surrounding us.
The lesson introduces you to the features of Tyrannosaurus rex.
Let's find out interesting facts about the flora and fauna of polar regions and the living conditions in those areas!
In this lesson you will find out where deciduous forests are located on the Earth and their fauna and flora.