TOPIC: WASTE AND WASTE DISPOSAL I
A: TEACHING AND LEARNING MATERIALS
- Waste bins.
- Samples or pictures of paper, plastic and food waste.
- Bottles and cans.
- Charts showing types of waste.
- Flashcards.
- Pupils’ notebooks and pencils.
B: REFERENCE MATERIALS
- Scheme of work.
- Recommended Basic Science textbook for Primary 5.
- Online educational resources.
C: PREVIOUS KNOWLEDGE
The pupils have learnt about healthy and unhealthy environments and understand that improper disposal of refuse can make the environment dirty and unsafe.
D: PERFORMANCE OBJECTIVES
By the end of the lesson, pupils should be able to:
- Define waste.
- Mention sources of waste.
- Identify different types of waste.
- Differentiate between solid and liquid waste.
- Explain biodegradable and non-biodegradable waste.
- Mention examples of each type of waste.
- State the importance of proper waste management.
E: CONTENT
Meaning of Waste
Waste is any material that is no longer needed and is thrown away.
Examples include:
Food remains.
Paper.
Bottles.
Plastic bags.
Dirty water.
Old clothes.
Sources of Waste
Waste can come from:
Homes.
Schools.
Markets.
Farms.
Hospitals.
Factories.
Types of Waste
Waste may be grouped into:
1. Solid Waste
These are wastes that are not liquid.
Examples:
Paper.
Plastic.
Bottles.
Cans.
Food remains.
2. Liquid Waste
These are wastes in liquid form.
Examples:
Dirty water.
Sewage.
Waste oil.
Biodegradable Waste
Biodegradable waste can decay naturally.
Examples:
🍌 Banana peel
🍂 Leaves
🥬 Vegetable waste
🍚 Food remains
Non-Biodegradable Waste
Non-biodegradable waste does not decay easily.
Examples:
Plastic bottles.
Glass.
Metal cans.
Nylon bags.
Importance of Proper Waste Management
Proper waste management:
Keeps the environment clean.
Reduces diseases.
Prevents blocked drains.
Reduces bad smell.
Helps useful materials to be recycled.
F: LESSON PRESENTATION
F1: Teachers’ Activities
- Displays different examples of waste.
- Explains the meaning of waste.
- Identifies sources of waste.
- Groups waste into solid and liquid.
- Explains biodegradable and non-biodegradable waste.
- Guides pupils to sort sample waste correctly.
F2: Pupils’ Activities
- Observe waste samples.
- Mention sources of waste.
- Sort waste into solid and liquid.
- Identify biodegradable waste.
- Identify non-biodegradable waste.
- State reasons for proper waste management.
G: CONCLUSION
The teacher revises the meaning, sources and types of waste. Pupils are reminded that proper handling of waste helps to keep the environment healthy.
H: EVALUATION GUIDE
Pupils should be able to answer the following questions:
- What is waste?
- Mention four sources of waste.
- Give three examples of solid waste.
- Give two examples of liquid waste.
- What is biodegradable waste?
- Give three examples of non-biodegradable waste.
- State three benefits of proper waste management.