TOPIC: FORMS OF ENERGY – LIGHT ENERGY
A: TEACHING AND LEARNING MATERIALS
- Torchlight.
- Candle.
- Electric bulb.
- Pictures of the sun and stars.
- Lantern.
- Pupils’ notebooks.
B: REFERENCE MATERIALS
- Scheme of work.
- Recommended Basic Science textbook for Primary 3.
- Online educational resources.
C: PREVIOUS KNOWLEDGE
The pupils have seen sunlight, electric bulbs, candles and torchlights and know that they help people to see.
D: PERFORMANCE OBJECTIVES
By the end of the lesson, pupils should be able to:
- Explain light energy.
- Identify sources of light.
- Differentiate between natural and artificial sources of light.
- Mention uses of light.
- State the importance of the sun as a source of light.
E: CONTENT
Meaning of Energy
Energy is the ability to do work or cause change. There are different forms of energy. One form is light energy.
Meaning of Light
Light is a form of energy that helps us to see things. Without enough light, it becomes difficult to see.
Natural Sources of Light
Natural sources are sources that occur in nature. Examples include:
- ☀️ Sun
- ⭐ Stars
- ⚡ Lightning
The sun is our major natural source of light.
Artificial Sources of Light
Artificial sources are made or controlled by human beings. Examples include:
- 💡 Electric bulb
- 🔦 Torchlight
- 🕯️ Candle
- Lantern
Uses of Light
Light helps us to:
- See objects.
- Read and write.
- Move safely at night.
- Grow plants because sunlight is important to plants.
- Dry clothes and other materials with sunlight.
F: LESSON PRESENTATION
F1: Teachers’ Activities
- Introduces light energy.
- Displays different light sources.
- Explains natural sources of light.
- Explains artificial sources of light.
- Discusses the sun as the main natural source.
- Guides pupils to mention uses of light.
F2: Pupils’ Activities
- Explain light in simple words.
- Identify sources of light.
- Sort sources into natural and artificial.
- Mention uses of light.
- Identify the sun as a natural source.
- Observe the torchlight demonstration.
G: CONCLUSION
The teacher explains that light energy enables us to see and that the sun is the major natural source of light. Pupils are encouraged to use artificial light sources safely.
H: EVALUATION GUIDE
Pupils should be able to answer the following questions:
- What is light?
- Mention two natural sources of light.
- Mention three artificial sources of light.
- Is the sun natural or artificial?
- State two uses of light.
- Which source of light can we carry in our hands?
- Why is light important to us?