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2410
This lesson presents timekeeping devices and the types and units of time measurement.
This lesson presents the production of waste water, its treatment and environmental impact.
Find out interesting facts about the anatomy of amphibians and their vital processes.
This lesson encourages the use of the Global Positioning System.
This lesson presents the old and modern ways of utilising wind energy.
This lesson is about the sound waves surrounding us.
This lesson presents the history of human space flight.
This lesson introduces you to the outer planets of the Solar System, that is the giant planets.
The lesson illustrates the size of the planets in the Solar System and the huge distances among them.
This lesson presents the weapons of World War I.
This lesson helps you understand what geographic coordinates are and how to use them.
Practise how to define a specific location using coordinate systems.
In this lesson, you will learn about the presence of humans in space in the past, present and future.
This lesson presents mutation types, their frequency and underlying causes.
Travel back in time and explore the beginnings of art, familiarise yourselves with the fascinating masterpieces of prehistoric people.
In this lesson you will learn more about how sound propagates.
This lesson presents soil formation, the components of soil, and soil protection.
Learn how the human body is built up and about the differences between men and women.
This lesson presents how solar energy can be utilised.
Follow Alexander the Great's military campaigns!
This lesson presents everything related to human reproduction.
This lesson presents the concepts of density and buoyancy through the operation of the submarine.
This lesson presents interesting facts about reptiles and their life.