BASIC SCIENCE AND TECHNOLOGY
PREVIOUS LESSON – Meaning of Safety and Safety Precautions | Causes of Accidents at Work and on the Road | Meaning and Examples Safety Devices Primary 6 (Basic 6) Term 2 Week 11 Basic Technology
TOPIC: SIMPLE MACHINE (LEVER)
2. Meaning and Types of Lever
3. Examples of Lever
4. Parts of Lever
5. Uses of Lever
6. Lesson Evaluation and Weekly Assessment (Test)
By the end of the lesson, most of the pupils should have attained the following objectives –
1. explain the meaning simple machine with appropriate examples.
2. describe the concept of lever.
3. state the types and parts of lever.
4. draw and label different types of lever.
5. discuss the uses of lever.
The pupils can identify some of the simple machines.
The teacher will teach the lesson with the aid of:
1. Bottle opener
2. Can opener
3. Scissors; Pliers
4. Chart/diagram of some common levers/li>
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 – Years Basic Education Curriculum
All Relevant Material
CONTENT OF THE LESSON
LESSON 1 – INTRODUCTION
A machine is a simple object which makes our work easier to do.
Many objects in the school and at home such as a pair of scissors, bottle opener and cutlass, are examples of simple machines.
In science, anything that makes us to use less energy to do much work or overcome a large force is called a machine.
Examples of simplest machines are the levers and pulleys.
MEANING OF LEVER
A lever is a simple machine that has the point of motion where effort can be made to carry a load.
EXAMPLES OF LEVER
The following are examples of lever,
5. Nut cracker
8. Hockey stick
9. Wheel barrow
10. Door handle
12. Hole puncher
LESSON TWO – PARTS OF LEVER
There are three parts of lever,
Fulcrum is the first class lever.
It is is at the middle of the effort and the load.
Load is known as second class lever.
It is in the middle between the fulcrum and the effort.
Effort is the third class lever.
It is at the middle, between the fulcrum and the load.
USES OF LEVER
The uses of lever are as:
1. Seesaw is used to have fun with a friend;
2. Scissor is used for cutting;
3. Crowbar used for split something apart or take out nails;
4. Hockey stick used to play hockey;
5. Wheel barrow is used move dirt or anything else;
6. Door handle is used to get through a door;
7. Dolly it is used to move heavy boxes and freight;
8. Hole puncher it is you for making hole on belt; etc.
LESSON 3 – REVISION AND WEEKLY ASSESSMENT (TEST)
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. Teacher organizes pupils in groups or pairs depending on the size of the class.
3. Teacher displays samples of simple machines for the groups or pairs to identify and state their uses.
Pupil’s Activities – Identify and state their uses.
4. Teacher listen to the pupils and uses their responses to introduce the lesson and leads a discussion on the meaning and parts of lever using appropriate examples.
Pupil’s Activities – Pay attention to the lesson introduction to understand the concept of the lesson and participate actively in the discussion on the meaning and parts of lever using appropriate examples.
5. Teacher guides pupils to identify different parts of level using the displayed simple machines.
Pupil’s Activities – Describe and identify each part of the lever.
6. Teacher uses the pupil’s responses in activity 3 to discuss the uses of lever.
Pupil’s Activities – Analyze the importance of lever in their communities.
7. Teacher asks pupils to drawing and label two or more parts of lever as displayed.
Pupil’s Activities – Drawing and label correctly, any two or more simple machine (lever).
8. Teacher summarizes each of the lesson on the board with appropriate lesson introduction.
Pupil’s Activities – Participate actively in the summary of the lesson by responding correctly to the questions and write as instructed.
- To conclude the lesson for the week, the teacher revises the entire lesson and links it to the following week’s lesson.
Teacher asks pupils to,
1. Name five common levers and machines in their homes;
2. Locate the pivot (fulcrum) load and effort arms in common lever machines;
3. State five common uses of levers.