TOPIC: FORCE
A: TEACHING AND LEARNING MATERIALS
- Toy car.
- Ball.
- Rubber band.
- Magnet.
- Spring.
- Force charts.
- Different classroom objects.
B: REFERENCE MATERIALS
- Scheme of work.
- Recommended Basic Science textbook for Primary 6.
- Online educational resources.
C: PREVIOUS KNOWLEDGE
The pupils have learnt how simple machines make work easier by helping people apply effort to move loads.
D: PERFORMANCE OBJECTIVES
By the end of the lesson, pupils should be able to:
- Define force.
- Describe force as a push or pull.
- Mention examples of force in everyday life.
- Identify contact and non-contact forces.
- State the effects of force.
- Demonstrate how force can change motion or shape.
E: CONTENT
Meaning of Force
A force is a push or pull that can affect an object. Examples: ➡️ Pushing a door. ⬅️ Pulling a drawer. ⚽ Kicking a ball. 🛒 Pushing a trolley.
Types of Force
Forces can be grouped into:
- Contact forces
- Non-contact forces
Contact Forces
A contact force occurs when two objects touch each other. Examples include:
- Pushing.
- Pulling.
- Friction.
- Force from a stretched spring.
Non-Contact Forces
A non-contact force can act without objects touching. Examples include:
- Gravitational force.
- Magnetic force.
🌍 Gravity pulls objects towards the earth. 🧲 A magnet can attract some metals without touching them first.
Effects of Force
Force can:
- Make a stationary object move.
- Stop a moving object.
- Increase speed.
- Reduce speed.
- Change direction.
- Change the shape of an object.
Examples
⚽ Kicking a stationary ball makes it move. 🧽 Squeezing a sponge changes its shape. 🚲 Applying a bicycle brake reduces motion.
F: LESSON PRESENTATION
F1: Teachers’ Activities
- Defines force.
- Demonstrates pushing and pulling.
- Introduces contact and non-contact forces.
- Uses a magnet to demonstrate magnetic force.
- Drops an object to demonstrate gravity.
- Demonstrates effects of force using a ball and rubber band.
- Asks pupils to identify forces around them.
F2: Pupils’ Activities
- Define force.
- Demonstrate pushes and pulls.
- Identify contact forces.
- Identify non-contact forces.
- Observe examples of gravity and magnetism.
- State the effects of force.
- Give everyday examples.
G: CONCLUSION
The teacher revises that force is a push or pull and can change the movement, direction, speed or shape of an object. Pupils are encouraged to observe examples of forces in everyday activities.
H: EVALUATION GUIDE
Pupils should be able to answer the following questions:
- What is force?
- Give three examples of a push.
- Give three examples of a pull.
- What is a contact force?
- Mention two non-contact forces.
- State four effects of force.
- What force pulls objects towards the earth?