Light and Sound Energy
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 and Sound Energy
Behavioural objectives :
By the end of the lesson, the learners will be able to
- Explain the meaning of Light and Sound Energy
- List examples of Light and Sound 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.
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SOUND ENERGY
Sound energy is produced when an object vibrates. The sound vibrations cause waves of pressure that travel through a medium, such as air, water, wood or metal. Sound energy is a form of mechanical energy. We can hear sound . Sound may be unpleasant noise or melodious music
Uses of Sound Technology
Cellular Telephone ringtones
Motion Picture soundtracks
Telephone rings
C.D.’s Televisions
Electronics
Hearing Aids
Video Tape Recorders
Video Cameras
Speakers
Stethoscopes
Microphone
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Presentation :
The topic is presented step by step
Step 1:
The class teacher revises the previous topics
Step 2.
He introduces the new topic
Step 3:
The class teacher allows the pupils to give their own examples and he corrects them when the needs arise
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.
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