Third Term Lesson Note for Week
Class: Primary 5
Subject: Basic Science and Technology
Topic: Concept of Energy Conversion.
Duration : 40 minutes
Period : Single Period
Reference Book :
- Basic Science and Technology for Primary Schools, Book 5.
- Lagos State Unified Schemes of Work for Primary Schools, Book 5.
- Online Resources
Learning Objectives : By the end of the lesson learners will be able to
i. Identify the forms of energy
ii. Give examples of the forms of Energy
Content :
Energy exists in various forms. Some of these forms are:
I.) Mechanical energy
II.) Chemical energy
III.) Light energy
IV.) Electrical energy
V.) Heat energy
VI.) Nuclear energy
VII.) Solar energy
VIII.) Wind energy
Energy can be changed from one form to another. The two forms of energy from the sun are light and heat energy. They exist naturally and can be used directly.
Other forms do not occur naturally and have to be obtained by conversion from other types. For example, electrical energy has to be obtained by conversion from chemical, mechanical or heat energy.
Solar energy gets to the earth as light and heat energy. Plants trap the light energy and convert it to Chemical energy. The chemical energy in plant is taken by man and is converted to mechanical energy.
Solar energy can be converted directly to electrical energy using solar cells.
In another way, energy from sun helps in the formation of the water cycle. We take advantage of the water cycle to generate electricity (electrical energy). The electrical energy is then converted to light and heat energy.
Wind energy is converted by windmill device to mechanical energy, which is used to grind maize, wheat or some other items.
The energy changes that take place in a torchlight is chemical energy (dry cell) to electrical energy to light energy.
Presentation Steps :
Step 1 : Revises the previous lesson learnt with the learners.
Step 2 : Introduces the new topic to the learners by mentioning the various forms of Energy.
Step 3 : Explain and five examples of the forms of Energy
Evaluation :
1) What is energy? _______________________________________________________________________________________________________________________________________
2) List five forms of energy
i. _________________________________________
ii. ________________________________________
iii . _______________________________________
iv. ________________________________________
v. _________________________________________
3) When batteries are used in a torchlight, which energy conversions have taken place?
_____________________________________________
_____________________________________________
4) Solar energy can be converted directly to
__________________ using ____________________.