Substance that contaminates water
Week: Six
Class: Primary Three
Topic: Substance that contaminates water
Objectives: At the end of the lesson, pupils should be able to:
1. identify and name some substances that make water unfit for drinking.
2. Explain how dead and decaying animals contaminate water
3. Explain how contaminates water.
4. discuss how dumping of refuse in rivers contaminates water.
Reference material: Charts showing ways water can be contaminated, Water contaminated with dust, sand particles
Content:
How to decay plants and animals contaminate water:
When plants and animals die, they settle to the bottom. Under normal conditions this causes the water body to gradually fill with sediment and organic material and it makes it smell and stink because germs and worms are sedimented and settled in it.
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- Revision of Air
- Ways of contacting substances in the Air
- Example of diseases/sickness caused by a harmful substance
- Water (water quality)
- Water quality
- Substance that contaminates water
- Water Purification (Making water fit for drinking)
- Making water fit for drinking (Filtration)
- hings about water
- More about water purification
- Chapters 10
- Category Primary 3
- Author ClassNotes Edu
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