PRIMARY 5: BASIC SCIENCE – FIRST TERM | WEEK 4

TOPIC: NOISE POLLUTION

A: TEACHING AND LEARNING MATERIALS

1. Pictures of vehicles and loudspeakers.
2. Bell or whistle.
3. Charts showing sources of noise.
4. Flashcards.
5. Pupils’ notebooks and pencils.

B: REFERENCE MATERIALS

1. Scheme of work.
2. Recommended Basic Science textbook for Primary 5.
3. Online educational resources.

C: PREVIOUS KNOWLEDGE

The pupils have learnt about water, air and land pollution and understand that pollution can make the environment unhealthy.

D: PERFORMANCE OBJECTIVES

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

1. Explain the meaning of noise pollution.
2. Mention sources of noise pollution.
3. State effects of excessive noise.
4. Differentiate between pleasant sound and unwanted noise.
5. Mention ways of reducing noise pollution.

E: CONTENT

Meaning of Noise Pollution

Noise pollution is excessive or unwanted sound that causes discomfort or disturbance.

🎵 Music played softly may be pleasant.

📢 Very loud music may become noise pollution.

Sources of Noise Pollution

Noise can come from:

Vehicle horns.

Loudspeakers.

Generators.

Factory machines.

Aeroplanes.

Construction equipment.

Shouting.

Loud music.

Effects of Noise Pollution

Too much noise can:

Cause headaches.

Disturb sleep.

Reduce concentration.

Cause stress.

Affect hearing.

Disturb communication.

Ways of Reducing Noise Pollution

We can reduce noise by:

Keeping music at a moderate volume.

Avoiding unnecessary use of vehicle horns.

Avoiding shouting.

Properly maintaining noisy machines.

Keeping generators away from living areas when possible.

Using ear protection in very noisy workplaces.

F: LESSON PRESENTATION

F1: Teachers’ Activities

1. Produces soft and loud sounds for comparison.
2. Explains noise pollution.
3. Lists common sources of noise.
4. Discusses the harmful effects of excessive noise.
5. Guides pupils to suggest ways of reducing noise.
6. Corrects pupils’ responses where necessary.

F2: Pupils’ Activities

1. Listen to different sounds.
2. Identify pleasant and unpleasant sounds.
3. Mention sources of noise pollution.
4. State effects of excessive noise.
5. Suggest ways to reduce noise.
6. Participate in class discussion.

G: CONCLUSION

The teacher revises the meaning, sources and effects of noise pollution. Pupils are encouraged to avoid unnecessary shouting and excessive noise at home and school.

H: EVALUATION GUIDE

Pupils should be able to answer the following questions:

1. What is noise pollution?
2. Mention four sources of noise pollution.
3. State three effects of excessive noise.
4. Mention three ways of reducing noise pollution.
5. Give one example of a sound that may become noise when it is too loud.