PULLEYS

SUBJECT: BASIC SCIENCE AND TECHNOLOGY
TERM: THIRD TERM
WEEK: WEEK 4
THEME: YOU AND TECHNOLOGY
CLASS: PRIMARY 6
TIME: 40 MINUTES
TOPIC: PULLEYS
UNITS
- Definition of pulley
- Example of
pulley - Types of pulley
- Application of pulley
PERFORMANCE OBJECTIVES
At the end of this Topic, Pupils should be able to:
- Know simple pulley machines.
- Uses of pulley machines.
- Know the difference between fixed and movable pulleys.
- Make and use pulley machines to do some work.
TEACHING AND LEARNING MATERIALS
- Plank
- Ladder
- Make use of stair case
- Whiteboard/Chalkboard
- Explanatory posters/pictures
- Explanatory videos
TEACHING AND LEARNING METHODS
- Explanation
- Discussion
- Questions and answer
REFERENCE MATERIALS
- NERDC Basic Education Curriculum for primary schools.
- Universal Basic Education Curriculum for primary schools.
- Lagos State Scheme of Work.
- Online Materials.
- Basic Science and Technology for Primary Schools.
CONTENT
DEFINITION OF PULLEY
A pulley is simple machine consisting of a wheel with a groove in which a rope can run to change the direction or point of application of a force applied to the rope.
TYPES OF PULLEY
- Fixed pulley: it is a type of pulley with a rope passing round a groove in the wheel’ circumference. It is used to raise a bucket of water from a well.
- Movable pulley: it is a type of pulley with a movable wheel. The pulley hangs freely as the rope passes under it.
EXAMPLES OF PULLEY MACHINES
- For towing vehicle
- Crane
- A lift
- Hoist
APPLICATIONS OF PULLEY
- For towing vehicle
- To lift building materials
- Used in ship to offload goods
- Use in Elevator
- Used in curtains at a theatre
- Flagpole use pulley to hoist flag up and bring it down.
- A bulldozer make use of pulley
PRESENTATION
- The Teacher revises the previous lesson.
- The Teacher introduces the topic.
- The Teacher explains the lessons.
LESSON EVALUATION
- Give three examples of a simple pulley.
- State two application of a pulley machine.
- Differentiate between fixed and movable pulley.
CONCLUSION: the teacher summarize the lesson.