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Outcome

In this lesson you will learn about:

1. The real number system.
2. Rational and irrational numbers.
3. How to convert terminating decimals to rational numbers. 
4. How to convert recurring decimals to rational numbers.
5. Rounding off decimal numbers.

This video explores the different types of numbers which exist.

This 32 minute long YouTube video investigates the water contamination problems in Tanzania, with specific focus on Dar Es Salaam. 

This 11 minute long YouTube video describes the various causes and types of water pollutants.

This short online resource elaborates on the difference between climate and weather and why understanding the climate is important.

This short online tutorial highlights the difference between weather and climate.

This YouTube video investigates what water pollution is and some examples and effects of water pollution.