PRIMARY 4: SOCIAL STUDIES – THIRD TERM | WEEK 8

TOPIC: POLLUTION

A: TEACHING AND LEARNING MATERIALS

1. Pictures of polluted environments.
2. Pictures of clean environments.
3. Waste materials for identification.
4. Charts showing types of pollution.
5. Pupils’ writing books and pencils.

B: REFERENCE MATERIALS

1. Scheme of work.
2. Recommended Social Studies textbook for Primary 4.
3. Online educational resources.

C: PREVIOUS KNOWLEDGE

The pupils have learnt the importance of keeping their homes, schools and surroundings clean.

D: PERFORMANCE OBJECTIVES

By the end of the lesson, pupils should be able to:

1. Define pollution.
2. Identify types of pollution.
3. Explain air pollution.
4. Explain water pollution.
5. Explain land pollution.
6. Mention causes of pollution.
7. State effects of pollution.
8. Mention ways of preventing and controlling pollution.

E: CONTENT

Meaning of Pollution

Pollution is the contamination or dirtying of the environment by harmful substances or activities.

Types of Pollution

Common types include:

1. Air pollution.
2. Water pollution.
3. Land pollution.
4. Noise pollution.

Air Pollution

Air pollution occurs when harmful smoke, gases or dust make the air dirty. Causes include:

• Vehicle fumes.
• Factory smoke.
• Burning rubbish.
• Bush burning.

Water Pollution

Water pollution occurs when harmful substances make water dirty and unsafe. Causes include:

• Dumping refuse into rivers.
• Oil spills.
• Sewage.
• Harmful chemicals.

Land Pollution

Land pollution occurs when land is made dirty or unsafe by waste and harmful materials. Causes include:

• Littering.
• Poor waste disposal.
• Plastic waste.
• Dumping refuse carelessly.

Effects of Pollution

Pollution may:

1. Cause diseases.
2. Harm plants.
3. Harm animals.
4. Make water unsafe.
5. Make the environment unpleasant.
6. Cause breathing problems.
7. Block drainage channels.

Prevention and Control of Pollution

Pollution can be reduced by:

1. Proper waste disposal.
2. Avoiding littering.
3. Planting trees.
4. Avoiding bush burning.
5. Keeping drains clean.
6. Reducing unnecessary smoke.
7. Recycling useful materials.
8. Keeping water sources clean.

F: LESSON PRESENTATION

F1: Teachers’ Activities

1. Shows pictures of clean and polluted environments.
2. Defines pollution.
3. Explains different types.
4. Discusses causes.
5. Discusses effects.
6. Explains pollution prevention.
7. Guides pupils to identify good environmental habits.

F2: Pupils’ Activities

1. Define pollution.
2. Identify types of pollution.
3. Give examples of causes.
4. State effects of pollution.
5. Mention ways of preventing pollution.
6. Compare clean and polluted environments.
7. Participate in class discussion.

G: CONCLUSION

The teacher revises the meaning, types, causes and effects of pollution. The teacher encourages pupils to keep their surroundings clean and avoid activities that pollute the environment.

H: EVALUATION GUIDE

Pupils should be able to answer the following questions:

1. What is pollution?
2. Mention four types of pollution.
3. What is air pollution?
4. What is water pollution?
5. What is land pollution?
6. Mention four causes of pollution.
7. State four effects of pollution.
8. Mention five ways of controlling pollution.