TOPIC: AIR POLLUTION
A: TEACHING AND LEARNING MATERIALS
- Pictures of smoking vehicles and factories.
- Pictures of bush burning.
- Charts showing clean and polluted air.
- Flashcards.
- Pupils’ notebooks and pencils.
B: REFERENCE MATERIALS
- Scheme of work.
- Recommended Basic Science textbook for Primary 5.
- Online educational resources.
C: PREVIOUS KNOWLEDGE
The pupils have learnt about water pollution, its causes, effects and ways of preventing it.
D: PERFORMANCE OBJECTIVES
By the end of the lesson, pupils should be able to:
- Define air pollution.
- Mention sources of air pollution.
- Identify common air pollutants.
- State effects of air pollution.
- Explain how air pollution affects living things.
- Mention ways of reducing air pollution.
E: CONTENT
Meaning of Air Pollution
Air pollution is the contamination of the air by smoke, dust and harmful gases.
🌳 Clean air helps humans and animals to breathe properly.
🏭 Polluted air may contain smoke and harmful gases.
Sources of Air Pollution
Air pollution can come from:
Smoke from vehicles.
Smoke from factories.
Burning refuse.
Bush burning.
Cigarette smoke.
Dust from roads and construction sites.
Harmful gases.
Common Air Pollutants
Examples include:
Smoke.
Dust.
Soot.
Harmful gases.
Fumes.
Effects of Air Pollution
Air pollution can:
Cause coughing.
Cause breathing difficulties.
Irritate the eyes.
Damage plants.
Make the environment dirty.
Reduce visibility.
Prevention of Air Pollution
Air pollution can be reduced by:
Avoiding bush burning.
Avoiding burning refuse.
Planting trees.
Maintaining vehicles properly.
Controlling factory smoke.
Keeping the environment clean.
F: LESSON PRESENTATION
F1: Teachers’ Activities
- Shows pictures of sources of air pollution.
- Explains the meaning of air pollution.
- Identifies common air pollutants.
- Discusses the effects of polluted air.
- Demonstrates how smoke can make breathing uncomfortable.
- Guides pupils to suggest ways of reducing air pollution.
F2: Pupils’ Activities
- Observe pictures.
- Mention sources of air pollution.
- Identify smoke, dust and fumes as pollutants.
- State effects of polluted air.
- Discuss ways to keep the air clean.
- Participate in class discussion.
G: CONCLUSION
The teacher revises the meaning, sources, effects and prevention of air pollution. Pupils are encouraged to avoid activities such as burning refuse and bushes unnecessarily.
H: EVALUATION GUIDE
Pupils should be able to answer the following questions:
- What is air pollution?
- Mention four sources of air pollution.
- List three air pollutants.
- State three effects of air pollution.
- Mention three ways of reducing air pollution.