TOPIC: INSECTS THAT CAN BE USEFUL AND HARMFUL
A: TEACHING AND LEARNING MATERIALS
- Pictures of insects.
- Crop pictures.
- Insect chart.
- Flashcards.
- Chalkboard.
B: REFERENCE MATERIALS
- Scheme of work.
- Recommended Agric Sciences textbook for Primary 2.
- Online educational resources.
C: PREVIOUS KNOWLEDGE
The pupils have learnt that some insects are useful because they help crops and farmers.
D: PERFORMANCE OBJECTIVES
By the end of the lesson, pupils should be able to:
- Explain useful insects.
- Explain harmful insects.
- Mention useful activities of insects.
- Mention harmful activities of insects.
- Distinguish between useful and harmful effects.
E: CONTENT
Useful Insects
An insect is useful when its activities help people, plants or farmers. Examples:
- bee
- butterfly
- praying mantis
Useful insects may:
- Help in pollination.
- Produce useful products.
- Eat some harmful insects.
Harmful Insects
An insect is harmful when its activities cause damage. Harmful insects may:
- Eat plant leaves.
- Destroy fruits.
- Damage stored grains.
- Bite people.
- Spread germs.
Useful and Harmful Activities
Some insects may be useful in one way but can also cause problems in another situation. Farmers therefore need to know which insects should be protected and which ones should be controlled.
F: LESSON PRESENTATION
F1: Teachers’ Activities
- Revises useful insects.
- Explains harmful insects.
- Gives examples of insect activities.
- Groups the examples into useful and harmful.
- Asks pupils to classify simple examples.
F2: Pupils’ Activities
- Mention useful insects.
- Mention harmful activities.
- Classify insect activities.
- Observe pictures.
- Answer questions.
G: CONCLUSION
The teacher revises the difference between useful and harmful insect activities and corrects pupils where necessary.
H: EVALUATION GUIDE
Pupils should be able to answer the following questions:
- What is a useful insect?
- What is a harmful insect?
- Mention two useful activities of insects.
- Mention two harmful activities of insects.
- Why should farmers identify insects correctly?