Ways of Contacting Substance in the Air

Basic Science and Technology

Primary 3.

2nd Term

Second term

Scheme of work with lesson note

Week: Two

Class: Primary Three

Topic: Ways of contacting substance in the Air

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

1. discuss air as a mean through which harmful substances are taken into the body.

2. explains environmental pollution.

3. explains how harmful substances are carried into the air by smoking.

4. explains how harmful substance are carried into the air by swallowing contaminated water.

Instructional material/Reference material: Unmaintained toilets in the school and soaker ways in the localities, Pictures and charts of people smoking, Pictures of children drinking contaminated water.

Building Background /connection to prior knowledge :pupils are familiar with the air, it effects and uses

Content: Ways of contacting substance in the Air

There are diverse of ways of contaminating substance in the air;

1. By environmental pollution.

2. By smoking.

3. By swallowing contaminated water.

1. ENVIRONMENTAL POLLUTION: Environmental pollution is defined as “the contamination of the physical and biological components of the earth/atmosphere system to such an extent that normal environmental processes are adversely affected.

2. SMOKING: During smoking carbon monoxide/carbon(1) oxide is released to the air which reduces level of oxygen and it affect breathing and in which the smoker is liable to die young. In addition, the longer you are around secondhand smoke, the greater the level of harmful substances in your body. As a result, you might have an increased risk of developing smoking-related disorders, including: Lung cancer and lung disease,

3. SWALLOWING CONTAMINATED WATER: Infectious diseases can be spread through contaminated water. Some of these water-borne diseases are Typhoid, Cholera, Paratyphoid Fever, Dysentery, Jaundice, Amoebiasis and Malaria. Chemicals in the water also have negative effects on our health.

Presentation

Step 1 : The class revises the previous topic

Step 2 : Introduction Of the new lesson

Step 3 : Allow learners to give their own ideas and suggestions and corrects them when the needs arise

Evaluation:The teacher asked questions on what has been taught.

1. discuss air as a mean through which harmful substances are taken into the body.

2. explains environmental pollution.

3. explains how harmful substances are carried into the air by smoking.

4. explains how harmful substance are carried into the air by swallowing contaminated water