JAMB CBT PRACTICE TEST

Timer : 10:00

BIOLOGY LESSON NOTE ON HUMAN KIDNEY

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Lesson Note on the Human Kidney Topic: The Human Kidney Duration: 40 minutes Specific Objectives: By the end of the lesson, students should be able to: Define the kidney and state its location in the human body. Identify and describe the structure and functions of the kidney. Explain the processes involved in urine formation (filtration, reabsorption, and secretion). Describe how the kidney contributes to homeostasis. Identify common kidney-related diseases and how to prevent them. Evaluate the importance of maintaining kidney health. Lesson Content: 1. Introduction to the Human Kidney The kidneys are vital organs in the human body responsible for filtering waste from the blood and regulating water and electrolyte balance. They are part of the excretory system and play a crucial role in homeostasis. Location: The kidneys are located in the abdominal cavity, on either side of the spine, just below the rib cage. Each kidney is bean-shaped and about the size of a fi...
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JSS1–JSS3 Refrigeration and Air Conditioning Scheme of Work (First, Second & Third Term) Based on Revised NERDC Curriculum Nigeria


Introduction

Refrigeration and Air Conditioning (RAC) is a core trade subject in the revised Nigerian Junior Secondary School curriculum. It equips students with practical skills in cooling systems, refrigeration cycles, air conditioning installation, maintenance, fault diagnosis, and electrical safety.

This complete JSS1–JSS3 Refrigeration and Air Conditioning Scheme of Work is based on the revised NERDC curriculum, designed to prepare students for careers in HVAC (Heating, Ventilation and Air Conditioning), appliance repair, and technical entrepreneurship.

This guide covers First Term, Second Term, and Third Term schemes of work for JSS1, JSS2, and JSS3, making it a complete teaching resource for technical and vocational education.

Table of Contents

  1. JSS1 Refrigeration and Air Conditioning Scheme of Work (First–Third Term)
  2. JSS2 Refrigeration and Air Conditioning Scheme of Work (First–Third Term)
  3. JSS3 Refrigeration and Air Conditioning Scheme of Work (First–Third Term)
  4. Key Areas in the Revised RAC Curriculum
  5. Importance of Refrigeration and Air Conditioning Education
  6. Teaching Tips for Teachers
  7. Conclusion

JSS1 Refrigeration and Air Conditioning Scheme of Work

First Term

Week Topic
Week 1 Introduction to Refrigeration and Air Conditioning
Week 2 Meaning of Refrigeration
Week 3 Importance of Cooling Systems
Week 4 Basic Refrigeration Tools
Week 5 Workshop Safety Rules
Week 6 Types of Refrigeration Systems
Week 7 Revision / Test
Week 8 Basic Air Conditioning Introduction
Week 9 Parts of Refrigerator
Week 10 Basic Cooling Principles
Week 11 Refrigerants Introduction
Week 12 Safety Practices in RAC Workshop
Week 13 Examination

Second Term

Week Topic
Week 1 Refrigeration Cycle Basics
Week 2 Compression Process Introduction
Week 3 Evaporation and Condensation
Week 4 Refrigeration Components
Week 5 Air Conditioning Components
Week 6 Heat Transfer Basics
Week 7 Revision / Test
Week 8 Maintenance Tools in RAC
Week 9 Simple Fault Identification
Week 10 Basic Wiring in Cooling Systems
Week 11 Workshop Safety Practice
Week 12 Simple Practical Work
Week 13 Examination

Third Term

Week Topic
Week 1 Revision of RAC Tools
Week 2 Basic Refrigeration Practice
Week 3 Air Conditioning Practice
Week 4 Cooling System Inspection
Week 5 Simple Repair Practice
Week 6 Workshop Demonstration
Week 7 Test
Week 8 Practical Cooling Project
Week 9 Exam Practice
Week 10 Revision
Week 11 Revision
Week 12 Revision
Week 13 Final Examination

JSS2 Refrigeration and Air Conditioning Scheme of Work

First Term

Week Topic
Week 1 Revision of JSS1 RAC
Week 2 Advanced Refrigeration Cycle
Week 3 Compressor Types
Week 4 Condenser and Evaporator Functions
Week 5 Refrigerant Handling
Week 6 Air Conditioning Systems Advanced
Week 7 Revision / Test
Week 8 Electrical Components in RAC
Week 9 Wiring Diagrams
Week 10 Fault Diagnosis in Refrigerators
Week 11 Maintenance Procedures
Week 12 Workshop Safety
Week 13 Examination

Second Term

Week Topic
Week 1 Domestic Refrigerator Repair
Week 2 Air Conditioner Installation Basics
Week 3 Gas Charging Techniques
Week 4 Leak Detection Methods
Week 5 Cooling System Troubleshooting
Week 6 Preventive Maintenance
Week 7 Revision / Test
Week 8 Thermostats and Controls
Week 9 Electrical Faults in RAC
Week 10 Tools Calibration and Care
Week 11 Entrepreneurship in RAC
Week 12 Revision
Week 13 Examination

Third Term

Week Topic
Week 1 Revision of JSS2 Topics
Week 2 Refrigerator Repair Practice
Week 3 Air Conditioner Service Practice
Week 4 Gas Charging Practice
Week 5 Practical RAC Project
Week 6 Workshop Demonstration
Week 7 Test
Week 8 Past Questions Practice
Week 9 Exam Practice
Week 10 Revision
Week 11 Revision
Week 12 Revision
Week 13 Final Examination

JSS3 Refrigeration and Air Conditioning Scheme of Work

First Term

Week Topic
Week 1 Revision of JSS2 RAC
Week 2 Advanced Cooling Systems
Week 3 Commercial Refrigeration
Week 4 Industrial Air Conditioning
Week 5 HVAC System Design Basics
Week 6 Refrigeration Control Systems
Week 7 Revision / Test
Week 8 Energy Efficiency in Cooling Systems
Week 9 Advanced Fault Diagnosis
Week 10 Refrigeration Standards
Week 11 Workshop Supervision
Week 12 Project Planning
Week 13 Examination

Second Term

Week Topic
Week 1 Cold Room Systems
Week 2 Air Conditioning Installation Advanced
Week 3 Refrigeration Business Setup
Week 4 Cost Estimation in RAC Work
Week 5 Customer Service in HVAC
Week 6 Maintenance Contracts
Week 7 Revision / Test
Week 8 Environmental Impact of Refrigerants
Week 9 Modern HVAC Technologies
Week 10 Safety Standards in Industry
Week 11 Past Questions Practice
Week 12 Revision
Week 13 Examination

Third Term

Week Topic
Week 1 Full Revision of RAC Topics
Week 2 Refrigeration Practice Revision
Week 3 Air Conditioning Practice Revision
Week 4 Practical HVAC Project
Week 5 Workshop Project Work
Week 6 System Installation Practice
Week 7 Test
Week 8 Past Questions Practice
Week 9 Exam Preparation
Week 10 Revision
Week 11 Revision
Week 12 Revision
Week 13 Final Examination

Key Areas in the Revised RAC Curriculum

  • Refrigeration systems and components
  • Air conditioning installation and repair
  • Electrical systems in cooling units
  • Fault diagnosis and maintenance
  • HVAC entrepreneurship

Importance of Refrigeration and Air Conditioning Education

  • Provides technical job skills
  • Creates self-employment opportunities
  • Supports cooling and appliance industries
  • Encourages entrepreneurship
  • Improves technical innovation

Teaching Tips for Teachers

  • Use real refrigeration units for demonstration
  • Teach step-by-step fault diagnosis
  • Emphasize electrical safety
  • Encourage hands-on repair practice
  • Assign HVAC projects

Conclusion

This JSS1–JSS3 Refrigeration and Air Conditioning Scheme of Work (Based on the Revised NERDC Trade Curriculum) provides a structured guide for teaching cooling system technology in Nigerian junior secondary schools. It prepares students for careers in HVAC installation, appliance repair, and technical entrepreneurship.



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