TOPIC: ENVIRONMENTAL QUALITY II – UNHEALTHY ENVIRONMENT
A: TEACHING AND LEARNING MATERIALS
- Pictures of dirty surroundings.
- Pictures of blocked drainage channels.
- Pictures of stagnant water.
- Charts showing poor sanitation practices.
- 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 the meaning of environmental quality and can identify the features and benefits of a healthy environment.
D: PERFORMANCE OBJECTIVES
By the end of the lesson, pupils should be able to:
- Describe an unhealthy environment.
- Identify features of an unhealthy environment.
- State causes of poor environmental quality.
- Mention health problems associated with dirty surroundings.
- Explain ways of improving environmental quality.
- Differentiate between healthy and unhealthy environments.
E: CONTENT
Meaning of an Unhealthy Environment
An unhealthy environment is a dirty or unsafe environment that can cause diseases or harm living things.
Features of an Unhealthy Environment
They include:
Piles of refuse.
Blocked drainage channels.
Stagnant water.
Bad smell.
Open sewage.
Dirty water.
Smoke and dust.
Many flies and mosquitoes.
🦟 Stagnant water can provide breeding places for mosquitoes.
Causes of Poor Environmental Quality
Poor environmental quality may result from:
Littering.
Improper waste disposal.
Open defecation.
Blocked drains.
Air and water pollution.
Failure to clean surroundings.
Health Problems Associated with Dirty Surroundings
They include:
Malaria.
Cholera.
Diarrhoea.
Typhoid.
Skin infections.
Improving Environmental Quality
We should:
Dispose of waste properly.
Clear drainage channels.
Remove stagnant water.
Clean toilets regularly.
Avoid littering.
Keep water sources clean.
Participate in environmental sanitation.
F: LESSON PRESENTATION
F1: Teachers’ Activities
- Displays pictures of unhealthy environments.
- Guides pupils to identify signs of poor sanitation.
- Explains causes of unhealthy surroundings.
- Discusses diseases linked with dirty environments.
- Compares healthy and unhealthy environments.
- Explains ways of improving environmental quality.
F2: Pupils’ Activities
- Observe and describe pictures.
- Mention signs of an unhealthy environment.
- Identify causes of poor sanitation.
- Mention diseases associated with dirty surroundings.
- Compare clean and dirty environments.
- Suggest ways of improving their surroundings.
G: CONCLUSION
The teacher revises the features and dangers of an unhealthy environment. Pupils are encouraged to practise good sanitation every day.
H: EVALUATION GUIDE
Pupils should be able to answer the following questions:
- What is an unhealthy environment?
- Mention five features of an unhealthy environment.
- State three causes of poor environmental quality.
- Mention three diseases associated with dirty surroundings.
- State four ways of improving environmental quality.
- Give one difference between a healthy and an unhealthy environment.