Air Pollution. Causes and Effects

Subject : 

Basic Science and Technology

Term :

First Term


Week 2

Class :

Basic 5 / Primary 5

Previous lesson : 

The pupils have previous knowledge of  meaning and types of Pollution 

Topic :

Air Pollution

Causes of Air Pollution

Effects of Air Pollution

Prevention or Possible solution to air pollution

Behavioural objectives :

At the end of lesson, pupils should be able to:

  • Define pollution air pollution
  • List common causes  causes of air pollution .
  • Say the effects of air pollution .
  • Explain the possible solution to Air pollution


Instructional Materials :

  • Wall charts
  • Pictures
  • Related Online Video
  • Flash Cards

Methods of Teaching :

  • Class Discussion
  • Group Discussion
  • Asking Questions
  • Explanation
  • Role Modelling
  • Role Delegation


Reference Materials :

  • Scheme of Work
  • Online Information
  • Textbooks
  • Workbooks
  • 9 Year Basic Education Curriculum
  • Workbooks


Content :

What is the meaning of Pollution ?

To pollute mean to defile , to contaminate, to adulterate or make unfit for both animal and  human use . When you see a dead decaying rat at the corner of mum”s kitchen , the dead rat is a pollutant because it will bring forth smell that is not appealing to everybody in the house .


What are Pollutants : Pollutants are objects or things that cause pollution or defilement ..


Examples of Air pollutants are 

  • Dust
  • Smoke
  • Tear gas
  • Carbon Dioxide
  • Carbon Monoxide
  • Gas flaring
  • Smoke from Generator
  • Smoke from bush burning
  • Spray of insecticides or chemical
  • Dead rats


What are the Harmful effects of  Air Pollution  ? 

  • Smoke may cause respiratory related diseases or illness.
  • Smoke may affect good vision or shedding of tears from the eyes
  • Smoking of cigarettes ‘may shorten life span as  The Federal Government through its Health ministry warns that smokers are liable to die young .
  • There are reports that smoke from generators have killed many people.
  • The ozone layer is depleted and this may lead to global warning  .
  • Asthmatic patients find it difficult to breathe where there is too much smoke or dust


The possible solutions to Air pollution 

  • Bedrooms , living rooms , parlours and classrooms must be properly ventilated .
  • Number of people living in a room must not be unnecessary large.
  • Teachers must encourage pupils to wet the floor before they start sweeping in order to reduce dust .
  • Do not put or operate your  generator very close to your windows .
  • Vehicles must be properly serviced and maintain in order to reduce smoke emission.
  • Smoking of cigarettes in public places must be discouraged .


The topic is presented step by step


Step 1:

The class teacher revises the previous topics


Step 2.

He introduces the new topic


Step 3:

The class teacher allows the pupils to give their own examples and he corrects them when the needs arise




The class teacher wraps up or conclude the lesson by giving out short note to summarize the topic that he or she has just taught.

The class teacher also goes round to make sure that the notes are well copied or well written by the pupils.

He or she does the necessary corrections when and where  the needs arise.



  • What is pollution
  • Mention is air pollution
  • Mention two air  pollutants
  • Mention effects  air pollutants
  • Mention two ways of solving air pollution




Prepare for the next lesson by reading about land pollution



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