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This lesson presents the history of human space flight.
This lesson presents how wind energy can be utilised.
Cattle is a large, domesticated vertebrate. Let's learn more about it.
The lesson makes a thorough presentation of the period of the Industrial Revolution and of its social and economic implications.
Lets perform experiments related to the pressure of gases.
A lesson about the anatomy and lifestyle of chickens.
Learn more about the early stages of human development with this lesson.
A guide about the meaning of icons found in digital lessons and the possibilities of using them.
The ancient Egyptian empire was led by pharaohs, considered sons of the Sun god.
This lesson presents the weapons of World War I.
In this lesson you will learn more about this special liquid.
This lesson helps to understand the Doppler effect.
In this lesson you will find information about the discovery and classification of vitamins as well as about illnesses caused by vitamin deficiency.
In this lesson you will familiarise yourselves with the concept of time.
This lesson presents the structure and classification of bacteria and the role they play in our lives.
In this lesson you will find out where savannahs are located on Earth and will learn about their rich fauna and flora.
The lesson introduces you to the features of Tyrannosaurus rex.