Light Energy and Colour — Understanding How Light Helps Us See Colours – Primary 1 Basic Science Lesson Note

Topic: Light Energy and Colour

Subtopic: Sources and Uses of Light; Importance of Colour

Date: ___________

Period: ___________

Duration: 40 minutes

Learning Objectives:

By the end of the lesson, pupils should be able to:

1. Identify different sources of light.
2. Mention the uses of light in daily life.
3. Recognize the importance of colour in our environment.
4. Carry out a simple colour-mixing activity (red + yellow = orange, etc.).

Key Vocabulary:

Light, Energy, Sun, Torch, Candle, Colour, Mix, Bright, Dark

Instructional Materials:

• Picture/chart of light sources (sun, candle, torch, bulb, lantern)
• Crayons or colour pencils (red, blue, yellow)
• White cardboard or paper
• Torchlight or candle (for teacher demonstration only)

Introductory Activity:

Teacher dims the classroom slightly, switches on a torchlight, and asks:
💡 “What happened when I turned on the torch?”
Pupils respond: “It brought light!”
Teacher then explains that light helps us to see things clearly.

Content:

Meaning of Light Energy:

Light is a type of energy that helps us to see things. Without light, everywhere would be dark.

Sources of Light:

Light comes from different places called sources of light. Examples are:

1. The sun – main natural source of light.
2. Electric bulb – man-made source of light.
3. Candle and lantern – give light when burning.
4. Torchlight – uses batteries to shine in the dark.
5. Fire – gives both light and heat.

Uses of Light:

• Light helps us to see things.
• Light helps plants to grow.
• Light helps us to work and read.
• Light is used to decorate places.

Colour:

Colour makes things look beautiful and different.
Examples of colours are red, blue, yellow, green, black, and white.

Simple Colour-Mixing Activity:

👉 Give each child red, blue, and yellow crayons or paints.
Let them mix colours to see what happens:

Teacher explains: When we mix colours, new colours are formed.

Board Summary:

• Light is energy that helps us to see.
• Sources of light: sun, candle, bulb, torch, lantern.
• We need light to see and work.
• Colours make things bright and beautiful.
• Mixing colours gives new colours.

Class Exercise 1:

Fill in the blanks:

1. The main source of light is the __________.
2. Light helps us to __________ things.
3. The candle and lantern give __________.
4. Colours make things look __________.
5. Red and yellow make __________.

Class Exercise 2:

Match the items to their correct group:

Assignment (5 MCQs):

1. The sun gives us _________. (a) Light (b) Food (c) Rain)
2. We use light to _________. (a) Sleep (b) See (c) Eat)
3. Which of the following is not a source of light? (a) Bulb (b) Stone (c) Candle)
4. Colours make things look _________. (a) Dull (b) Dirty (c) Beautiful)
5. Red + Blue = _________. (a) Orange (b) Purple (c) Green)