Meaning, Sources and Uses of Light energy Basic Science Primary 3 First Term Lesson Notes Week 5
Light and Sound Energy
SUBJECT: Basic science and Technology Third Term Primary 3
CLASS: Primary 3
Term : Third Term
Week: Week 7 & 8
Topic : Light Energy
Behavioural objectives :
By the end of the lesson, the learners will be able to
- Explain the meaning of light Energy
- List examples of Light Energy
Previous lesson :
The pupils have previous knowledge of
that was taught in the previous topic
Instructional Materials :
- Touch light
- Candle
- Lantern
- Sand
- Wheelbarrow
- Shovel
- Stick
- Plane
- Mirror
- Lenses concave
- Empty tins with shinny surface
- Pencils.
Methods of Teaching :
- Class Discussion
- Group Discussion
- Asking Questions
- Explanation
- Role Modelling
- Role Delegation
Reference Materials :
- Scheme of Work
- Online Information
- Textbooks
- Workbooks
- 9 Year Basic Education Curriculum
- Workbooks
CONTENT
LIGHT ENERGY
Light energy is a form of radiation that we use to see .. Light consists of photons, which are produced when an object’s atoms heat up. Light travels in waves and is the only form of energy visible to the human eye.
SOURCES OF ENERGY
Sun
Electric bulb
Explosion
Flame
Led(light emitting diode)
Fire
Moon
Tube light
Uses of light energy
It helps us to see things.
It helps plants to make food and grow.
It is used in power satellites and space stations.
It is used in many electronic appliances.
The energy of light from the sun can be harvested to solar panels and can be used for domestic use since it is eco-friendly and cost effective too.
Materials that can reflect light
Smooth and shinning surface like glass,water, or polished metals.
What is Light Energy? 🌞
Light energy is a form of energy that our eyes can detect. It comes from sources like the sun, stars, light bulbs, and even fireflies! 🌞💡✨
Examples of Light Energy: 💡
- Sunlight: The sun is a massive source of light energy. It provides us with light and warmth during the day. ☀️
- Flashlight: When you turn on a flashlight, it produces light energy. It helps you see in the dark. 🔦
- Glowing Objects: Have you seen fireflies glowing in the evening? That’s also light energy at work! ✨🌙
How Does Light Energy Work? 🤔
Light energy travels in tiny packets called “photons.” Imagine them as little packets of light. 🌟
When these photons reach our eyes, they make us see things. For example, when you look at a colorful flower 🌺, it’s because the flower is reflecting light energy, and your eyes catch those reflections!
Presentation :
The topic is presented step by step
Step 1:
The class teacher revises the previous topics
Step 2.
He introduces the new topic
Learner’s Activity: 👀
Let’s do a quick activity. Look around your classroom. Can you spot objects that are giving off light energy? Write down their names and share them with the class! 📝💬
Why is Light Energy Important? 🌈
Light energy is vital because it helps us see the world around us. It allows us to enjoy beautiful colors, read books, watch TV, and play games. Imagine a world without light energy – it would be dark and dull! 😔🌚
Step 3:
The class teacher allows the pupils to give their own examples and he corrects them when the needs arise
Assessment: 📚
Now, let’s check what we’ve learned today. Answer this question: “What is light energy, and why is it important?” Write your answers in your notebooks.
Evaluation
1. Light energy is a form of ________ that our eyes can detect.
a) Sound
b) Heat
c) Energy
d) Water
2. The sun is a massive source of ________.
a) Wind
b) Light energy
c) Heat
d) Sound energy
3. Light energy travels in tiny packets called ________.
a) Light bulbs
b) Rays
c) Photons
d) Air
4. When you turn on a flashlight, it produces ________.
a) Sound energy
b) Heat energy
c) Light energy
d) Water energy
5. Fireflies glow in the evening due to the emission of ________.
a) Sound energy
b) Heat energy
c) Light energy
d) Wind energy
6. Light energy allows us to see and enjoy ________.
a) Dark spaces
b) Quiet moments
c) The colorful world around us
d) Cold temperatures
7. Light energy is detected by our ________.
a) Ears
b) Tongue
c) Eyes
d) Skin
8. Light energy helps us read books and watch ________.
a) Sunsets
b) Clouds
c) TV
d) Trees
9. Light energy is made up of tiny packets called ________.
a) Protons
b) Neutrons
c) Photons
d) Electrons
10. Without light energy, the world would be ________.
a) Dark and dull
b) Bright and colorful
c) Quiet and peaceful
d) Cold and icy
11. Light energy allows us to enjoy the beauty of different ________.
a) Animals
b) Colors
c) Tastes
d) Textures
12. Light energy helps us see objects because they ________.
a) Absorb light
b) Produce sound
c) Emit heat
d) Float in the air
13. Light energy comes from sources like the ________.
a) Moon and stars
b) Oceans and rivers
c) Mountains and valleys
d) Deserts and forests
14. Light energy helps us see during the ________.
a) Day and night
b) Morning and evening
c) Winter and summer
d) Rainy and windy days
15. Light energy is essential for activities like reading, writing, and ________.
a) Running
b) Dancing
c) Swimming
d) Playing
[mediator_tech]
Conclusion
The class teacher wraps up or conclude the lesson by giving out short note to summarize the topic that he or she has just taught.
The class teacher also goes round to make sure that the notes are well copied or well written by the pupils.
He or she does the necessary corrections when and where the needs arise.
Evaluation
- define and explain the meaning of sound energy.
- explains two sources of light energy.
- list three materials that can reflect lights.
- explain the meaning of sound energy.
Week 1 : Living Things . Plants and animals
Week 2 : Characteristics of living things
