TOPIC: GENERAL REVISION
A: TEACHING AND LEARNING MATERIALS
- Ruler and measuring tape.
- Weighing scale.
- Clock.
- Torchlight.
- Mirror.
- Pictures of traditional and modern technology.
- Revision flashcards.
- Pupils’ notebooks and pencils.
B: REFERENCE MATERIALS
- Scheme of work.
- Recommended Basic Science textbook for Primary 3.
- Online educational resources.
C: PREVIOUS KNOWLEDGE
The pupils have learnt measurement of length, mass and time, light energy, mirrors and reflection, traditional and modern technology, and uses of technology during the first term.
D: PERFORMANCE OBJECTIVES
By the end of the lesson, pupils should be able to:
- Recall the main concepts taught during the term.
- Identify measuring instruments and units.
- Identify natural and artificial sources of light.
- Explain mirror reflection and image formation.
- Differentiate between traditional and developed technology.
- State important uses of technology.
E: CONTENT
Revision of Measurement
Length tells how long or short an object is. Instruments:
- Ruler.
- Metre rule.
- Measuring tape.
Units:
- mm
- cm
- m
Mass tells how heavy or light an object is. Instruments:
- Weighing balance.
- Weighing scale.
Units:
- g
- kg
Time tells when something happens or how long it lasts. Instruments:
- Clock.
- Watch.
Units include:
- Seconds.
- Minutes.
- Hours.
Revision of Light
Light helps us see. Natural sources include:
- ☀️ Sun
- ⭐ Stars
- ⚡ Lightning
Artificial sources include:
- 🔦 Torch
- 💡 Bulb
- 🕯️ Candle
Revision of Mirrors
A mirror reflects light. An image is the picture formed in a mirror. Reflection is the bouncing back of light.
Revision of Traditional Technology
Examples:
- Hoe.
- Cutlass.
- Grinding stone.
- Mortar and pestle.
- Town crier.
Revision of Developed Technology
Examples:
- Tractor.
- Computer.
- Mobile phone.
- Aeroplane.
- Washing machine.
Uses of Technology
Technology is used:
- At home.
- In schools.
- On farms.
- In hospitals.
- For communication.
- For transportation.
F: LESSON PRESENTATION
F1: Teachers’ Activities
- Revises measurement of length, mass and time.
- Revises light energy and its sources.
- Reviews mirrors and reflection.
- Revises traditional technology.
- Revises developed technology.
- Discusses uses of technology.
- Conducts practical and oral revision exercises.
F2: Pupils’ Activities
- Answer questions on measurement.
- Identify measuring instruments.
- Classify sources of light.
- Explain mirror reflection.
- Identify traditional tools.
- Identify modern machines.
- Mention uses of technology.
- Participate in revision exercises.
G: CONCLUSION
The teacher revises all the important topics taught during the first term and corrects pupils’ mistakes. The pupils are encouraged to study their notes and practise the activities in preparation for the examination.
H: EVALUATION GUIDE
Pupils should be able to answer the following questions:
- What instrument is used to measure the length of a pencil?
- What unit is used to measure the mass of a bag of rice?
- How many minutes make one hour?
- Mention two natural sources of light.
- What is reflection?
- Mention two examples of traditional technology.
- Mention three examples of developed technology.
- State three uses of technology.
- What picture do we see when we look into a mirror?
- Which machine can a modern farmer use instead of a hoe?