BASIC SCIENCE AND TECHNOLOGY (BST)
THEME – ENVIRONMENTAL QUALITY
PREVIOUS LESSON – Environmental Quality – A Good or Poor Quality Environment (Primary 5)
TOPIC: WASTE DISPOSAL
1. Introductory Activities
2. Meaning of Waste Disposal
2. Methods of Disposal of Waste
3. Advantages of Proper Waste Disposal
4. Disadvantages of Improper Waste Disposal
By the end of the lesson, most of the pupils should have attained the following objectives –
1. explain the meaning of waste disposal;
2. mention methods of disposal of waste;
3. list the advantages of proper waste disposal;
4. mention three dangers of improper disposal of waste.
The pupils can understand how to remove waste from the environment.
The teacher will teach the lesson with the aid of:
1. picture/charts of waste disposal van
2. Buckets, wheel barrows
3. Drums, shovel, spade, etc.
5. Waste dumps, bottles, paper, sticks, empty can, water, wood Ash, leaf litters etc.
METHOD OF TEACHING
Choose a suitable and appropriate methods for the lessons.
Note – Irrespective of choosing methods of teaching, always introduce an activities that will arouse pupil’s interest or lead them to the lessons.
Scheme of work
9 – Year Basic Education Curriculum
Basic Science and Technology Book 6
All Relevant Materials
Relevant Materials – Environmental Quality – Disposing Sewage and Effects of Waste Disposal (Primary 5) ASEI PDSI METHOD
CONTENT OF THE LESSON
LESSON 1 – INTRODUCTION
Waste disposal is removing and destroying or storing damaged unwanted or unusable materials. Waste disposal includes burning, compost pit or at sea, and recycling of waste.
That’s, Waste disposal means getting rid of waste in a proper way.
Improper ways of disposing of waste pose serious problems to our health and environment. Government spends a lot of money on waste collection and disposal.
METHODS OF WASTE DISPOSAL
A. SOLID WASTE DISPOSAL
Solid waste should be collected and carried to proper places where it is safely got rid of.
Solid waste can be disposed of by composting, incinerating or burning, landfilling and recycling.
There are three steps to take for a proper waste disposal:
1. Waste collection
2. Sorting waste
3. Disposal of waste
B. LIQUID WASTE DISPOSAL
Liquid waste can be dispose of by providing soak – away pits in homes or allowing the wastewater to flow into gutter, streams, rivers or oceans.
LESSON 2 – ADVANTAGES OF PROPER WASTE DISPOSAL
1. Control spread of sickness and diseases
2. Protect our environment from pollution
3. Improve quality of life
4. Save money and resources
5. Enable waste reuse
EFFECT OF IMPROPER WASTE DISPOSAL
1. Pollution – land, water and air are contaminated.
2. Increase in flies e.g. breed mosquitoes, sun flies
3. Easy spread of sickness and disease by flies or rodents
4. Poor health
5. Endangered our lives
To deliver the lesson, the teacher adopts the following steps:
1. To introduce the lesson, the teacher revises the previous lesson. Based on this, he/she asks the pupils some questions;
2. Leads discussion on proper disposal of wastes;
3. Displays pictures and diagrams of ways of disposing waste;
Pupil’s Activities – Listen, ask questions and discuss waste and how to recycle waste.
4. Guides pupils to make compost pit, as a way of disposing;
Pupil’s Activities – Guides pupils to make compost pit, as a way of disposing or recycling waste. Prepare posters that teach proper disposal of household waste.
5. Arranges visit to land fill area where wastes are recycled;
Pupil’s Activities – Discuss the dangers of not disposing waste properly.
6. Summarize the meaning (types) of waste disposal, advantages of disposal waste properly and effects of improper waste disposal on the board.
Pupil’s Activities – Copy as the teacher writes.
To conclude the lesson for the week, the teacher revises the entire lesson and links it to the following week’s lesson – waste recycling.
Ask pupils to:
1. explain the meaning of waste disposal.
2. list three advantages of proper waste disposal.
3. mention three dangers of improper disposal of waste.
WEEKLY ASSESSMENT (TEST)
1. ________ is removing unwanted or unusable materials.
A. Waste product
B. Waste bin
C. Waste disposal
2. Waste disposal is ________.
A. unwanted materials
B. unusable materials
C. A and B
3. Which of these not benefit of disposing waste?
A. Improve quality of life
B. Save money and resources
C. Endangered our lives
4. One of these is the effect of improper waste disposal.
A. Control spread of diseases.
B. Wide spread of diseases
C. Environmental protection
5. The following are the effects of improper waste disposal except ________.
A. decrease in quality of life
B. increase death rate
C. increase quality of life
6. The following are the advantages of proper waste disposal except ________.
A. save money and resources
B. enable waste reuse
6. Waste disposal includes burning, compost pit or at sea, and recycling of waste.
7. Waste disposal means getting rid of waste in an improper way.
8. Solid waste should be collected and carried to proper places where it is safely got rid of.
9. Solid waste cannot be disposed of by composting, incinerating or burning, landfilling and recycling.
10. Liquid waste can be dispose of by providing soak – away pits in homes or allowing the wastewater to flow into gutter, streams, rivers or oceans.