TOPIC: WASTE AND WASTE DISPOSAL II – DISPOSAL, REUSE AND RECYCLING
A: TEACHING AND LEARNING MATERIALS
- Waste bins.
- Used bottles and containers.
- Old newspapers.
- Plastic materials.
- Charts showing waste disposal methods.
- Recycled items.
- 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 the meaning, sources and types of waste and can differentiate between biodegradable and non-biodegradable materials.
D: PERFORMANCE OBJECTIVES
By the end of the lesson, pupils should be able to:
- Explain waste disposal.
- Mention methods of waste disposal.
- State effects of improper waste disposal.
- Explain the meaning of reuse.
- Explain the meaning of recycling.
- Identify materials that can be reused or recycled.
- State advantages of reuse and recycling.
E: CONTENT
Meaning of Waste Disposal
Waste disposal is the proper removal or treatment of unwanted materials.
Methods of Waste Disposal
Waste may be disposed of through:
Collection in waste bins.
Composting.
Controlled burning where appropriate and permitted.
Burial of suitable waste.
Collection by approved waste-disposal services.
Recycling.
Sewage Disposal
Sewage is waste water containing human or household waste.
It should be safely carried through proper sewage or sanitation systems.
Effects of Improper Waste Disposal
Improper waste disposal can:
Spread diseases.
Block drainage channels.
Cause flooding.
Produce bad smell.
Attract rats, flies and mosquitoes.
Pollute land and water.
Meaning of Reuse
Reuse means using an item again instead of throwing it away.
Examples:
Using an empty container for storage.
Using old newspapers for craft work.
Using a bottle again where it is safe to do so.
Meaning of Recycling
Recycling means processing used materials to make new products.
♻️ Examples of recyclable materials include:
Paper.
Glass.
Plastic.
Metal.
Advantages of Reuse and Recycling
Reuse and recycling:
Reduce waste.
Keep the environment cleaner.
Save useful materials.
Reduce pollution.
Can create useful new products.
F: LESSON PRESENTATION
F1: Teachers’ Activities
- Revises types of waste.
- Explains waste disposal.
- Discusses safe methods of waste disposal.
- Explains the dangers of improper waste disposal.
- Demonstrates how some items can be reused.
- Shows examples of recyclable materials.
- Explains the advantages of recycling.
F2: Pupils’ Activities
- Mention types of waste.
- Identify correct waste-disposal methods.
- State effects of improper disposal.
- Identify objects that can be reused.
- Identify recyclable materials.
- Suggest ways to reduce waste at home and school.
G: CONCLUSION
The teacher revises proper waste disposal, reuse and recycling. Pupils are encouraged to reduce waste, reuse useful items and place waste in appropriate containers.
H: EVALUATION GUIDE
Pupils should be able to answer the following questions:
- What is waste disposal?
- Mention four methods of waste disposal.
- State three effects of improper waste disposal.
- What does reuse mean?
- What is recycling?
- Mention four materials that can be recycled.
- State three advantages of reuse and recycling.