PRIMARY 3: BASIC SCIENCE – SECOND TERM | WEEK 3

TOPIC: AIR IN MOTION – HARMFUL EFFECTS OF WIND

A: TEACHING AND LEARNING MATERIALS

1. Pictures of storms.
2. Pictures of fallen trees.
3. Pictures of damaged roofs.
4. Soil tray.
5. Dry leaves.
6. Pupils’ notebooks and pencils.

B: REFERENCE MATERIALS

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

C: PREVIOUS KNOWLEDGE

The pupils have learnt that wind is moving air and that wind can be useful for drying clothes, moving boats and cooling the body.

D: PERFORMANCE OBJECTIVES

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

1. Identify gentle and strong wind.
2. Mention harmful effects of strong wind.
3. Explain how wind can damage plants and buildings.
4. State how wind can remove loose soil.
5. Mention safety precautions during strong wind.

E: CONTENT

Gentle and Strong Wind

Wind can be gentle or strong. A gentle wind may cool the body and move leaves slowly. A strong wind can move heavy objects and may cause damage.

Harmful Effects of Strong Wind

Strong wind can:

1. Break tree branches.
2. Uproot trees.
3. Remove roofs from buildings.
4. Scatter objects.
5. Damage crops.
6. Raise dust.
7. Cause accidents.

Wind and Soil

Strong wind can blow away loose topsoil. This is called wind erosion. 🌬️ + loose soil ➡️ soil is carried away. When good topsoil is removed, plants may not grow well.

Safety During Strong Wind

During strong wind or storms:

1. Stay indoors when possible.
2. Move away from weak trees.
3. Stay away from damaged electric poles.
4. Close doors and windows properly.
5. Do not play outside during a dangerous storm.

F: LESSON PRESENTATION

F1: Teachers’ Activities

1. Revises the meaning of wind.
2. Explains gentle and strong wind.
3. Shows pictures of wind damage.
4. Demonstrates how wind can blow loose soil.
5. Discusses wind erosion.
6. Explains safety precautions.

F2: Pupils’ Activities

1. Differentiate between gentle and strong wind.
2. Observe pictures of wind damage.
3. Mention harmful effects of wind.
4. Observe the soil demonstration.
5. Explain wind erosion in simple terms.
6. Mention safety precautions.

G: CONCLUSION

The teacher explains that wind can be useful, but very strong wind can damage people, plants, soil and property. Pupils are reminded to stay in safe places during dangerous storms.

H: EVALUATION GUIDE

Pupils should be able to answer the following questions:

1. Mention one difference between gentle and strong wind.
2. State three harmful effects of strong wind.
3. What can strong wind do to trees?
4. What is wind erosion?
5. Can strong wind remove roofs?
6. Mention two safety precautions during storms.
7. Why should we stay away from weak trees during strong wind?