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Secondary School Lesson Notes and Scheme of Work

SS3 First Term Air Conditioning And Refrigeration Lesson Note and Scheme of Work

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SS3 First Term Air Conditioning And Refrigeration Lesson Note and Scheme of Work


SS3 First Term Air Conditioning And Refrigeration Lesson Note and Scheme of Work


Week 1: Introduction to Air Conditioning and Refrigeration


Lesson Note:


Introduction to the course objectives and expectations.

Definition and basic principles of air conditioning and refrigeration.

Historical development of air conditioning and refrigeration systems.

Overview of the importance and applications of air conditioning and refrigeration technology.



Class discussion on the importance of air conditioning and refrigeration in modern society.

Group presentation on the historical timeline of air conditioning and refrigeration innovations.

Introduction to safety precautions and best practices in the workshop.

Week 2-4: Fundamentals of Refrigeration Systems


Lesson Note:


Understanding the basic components of a refrigeration system.

Explanation of the refrigeration cycle and its various stages.

Types of refrigerants and their properties.

Principles of heat transfer in refrigeration systems.



Hands-on demonstration of the refrigeration cycle using diagrams and models.

Lab experiments to observe heat transfer mechanisms in refrigeration systems.

Group projects to research and present on different types of refrigerants and their environmental impacts.

Week 5-7: Air Conditioning Systems and Components


Lesson Note:


Overview of different types of air conditioning systems (split, window, central, etc.).

Understanding the components of an air conditioning system (compressor, condenser, evaporator, etc.).

Principles of air distribution and ventilation in air conditioning.



Field trip to an HVAC (Heating, Ventilation, and Air Conditioning) facility for practical demonstrations.

Hands-on disassembly and assembly of air conditioning components.

Group projects to design an efficient air conditioning system for a specific environment.

Week 8-10: Maintenance and Troubleshooting


Lesson Note:


Importance of regular maintenance in air conditioning and refrigeration systems.

Common problems and troubleshooting techniques.

Safety procedures for maintenance and repair tasks.

Introduction to digital tools and diagnostic equipment used in the industry.



Simulation exercises on diagnosing and fixing common HVAC system issues.

Guest lectures from industry professionals on real-world maintenance challenges.

Role-playing scenarios to practice communication skills when dealing with clients and coworkers.

Week 11: Revision Week


Lesson Note:


Review of key concepts, principles, and techniques covered throughout the term.

Practice quizzes and assignments to reinforce learning.

Individualized feedback and guidance for areas of improvement.



Group study sessions to review notes and discuss challenging topics.

Mock exams to simulate the exam environment and assess preparedness.

Peer evaluation and feedback on presentation skills and content comprehension.

Week 12: Examination Week.


Week 13: Vacation week.

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