TOPIC: USEFULNESS OF EARTHWORMS TO FARMERS
A: TEACHING AND LEARNING MATERIALS
- Earthworm pictures.
- Soil samples.
- Pictures of healthy plants.
- Farm soil chart.
- Flashcards.
B: REFERENCE MATERIALS
- Scheme of work.
- Recommended Agric Sciences textbook for Primary 2.
- Online educational resources.
C: PREVIOUS KNOWLEDGE
The pupils can identify and describe an earthworm and know that it lives mainly in moist soil.
D: PERFORMANCE OBJECTIVES
By the end of the lesson, pupils should be able to:
- State ways earthworms help farmers.
- Explain how earthworms loosen the soil.
- State how earthworms help air enter the soil.
- Explain how earthworms help plant growth.
- State why earthworms should be protected.
E: CONTENT
Earthworms Loosen the Soil
As earthworms move through the soil, they make small passages. These passages help to loosen the soil.
Earthworms Allow Air into the Soil
The small spaces made by earthworms allow air to enter the soil. Plant roots need air.
Earthworms Help Water Enter the Soil
Earthworm passages also help water move into the soil. 💧 Water is important for plant growth.
Earthworms Mix Dead Materials with Soil
Earthworms help mix dead leaves and other materials with the soil. This can improve the soil.
Earthworms Help Plants Grow
Because earthworms improve the soil, plant roots can grow more easily.
Protecting Earthworms
Farmers should avoid destroying earthworms unnecessarily.
F: LESSON PRESENTATION
F1: Teachers’ Activities
- Revises the earthworm.
- Explains how it moves through the soil.
- Shows how spaces in soil allow air and water to enter.
- Explains how earthworms help plant growth.
- Discusses why earthworms should be protected.
F2: Pupils’ Activities
- Mention ways earthworms help soil.
- Explain why loose soil is useful.
- State the importance of air and water in soil.
- Mention how earthworms help plants.
- State why earthworms should be protected.
G: CONCLUSION
The teacher summarizes the usefulness of earthworms and emphasizes their importance in keeping farm soil in good condition.
H: EVALUATION GUIDE
Pupils should be able to answer the following questions:
- Mention three ways earthworms help farmers.
- How do earthworms loosen the soil?
- How do earthworms help air enter the soil?
- Why is water important to plants?
- Why should earthworms be protected?