Safety Precautions for Computer and GSM Repairs for SS 1

Class: SS 1
Term: Second Term
Week: 2
Age: 15 years
Duration: 60 minutes
Subject: Computer Hardware and GSM Repairs
Curriculum Theme: Safety, Environmental and ethical
Focal competence: Apply basic safety precautions in servicing tasks and workspace
Key competencies/values: Communication; Collaboration; Respect; Responsibility
Skills:

• Using electronic equipment and tools appropriately

Previous Lesson:
Topic: Safety Precautions And Personal Protection: Safety Precautions
Subject Matter: Safety precautions

Specific Objectives

By the end of the lesson, pupils/students should be able to:

Cognitive Domain

• Explain safety precautions in an electronic workshop.

Affective Domain

• Appreciate the importance of safety in computer and mobile phone repair.
• Demonstrate responsibility in maintaining a safe workspace.

Psychomotor Domain

• Use electronic equipment and tools appropriately.
• Demonstrate safety precautions in computer and mobile phone repair.

Reference Materials

The following resources were used in planning this lesson:

• 2025 New Revised Senior Secondary Education Curriculum (SSEC)
• Relevant State Unified Scheme of Work
• The HeadTeacher Scheme of work For The New Revised Senior Secondary Education Curriculum (SSEC)
• Relevant Computer Hardware and GSM Repairs textbook for SS 1

Instructional Materials

The teacher will teach this lesson with the aid of:

• Charts/posters showing safety precautions
• Personal Protective Equipment (PPE) such as safety glasses, workshop gloves, overall
• Anti-static strap
• Pencils, colours, cardboard papers for poster creation
• Basic electronic tools (e.g., screwdrivers, pliers)
• A sample computer or mobile phone (for demonstration of repair setup)

Rationale for the Lesson

This lesson is essential for equipping students with the foundational knowledge and practical skills to work safely in an electronic repair environment. Understanding and applying safety precautions prevents accidents, protects equipment, and fosters a responsible attitude towards repair tasks. This knowledge is crucial for their future careers in computer hardware and GSM repairs.

Prerequisite/Previous Knowledge

Students should have a basic understanding of common tools used in everyday life and the general concept of safety in practical activities.

Lesson Content/Board Summary

Safety Precautions And Personal Protection: Safety Precautions

General Safety Precautions in an Electronic Workshop

Working in an electronic workshop requires strict adherence to safety precautions to prevent injuries, electric shocks, and damage to equipment. These precautions ensure a safe and efficient working environment.

1. Proper Ventilation: Ensure the workspace is well-ventilated to prevent the accumulation of fumes from soldering, cleaning agents, or other chemicals. Good airflow helps dissipate heat and harmful gases.
2. Organized Workspace: Keep the workbench tidy and free from clutter. Tools should be stored in their designated places, and components should be organized. A cluttered workspace increases the risk of tripping, dropping tools, or misplacing essential items.
3. Use of Anti-static Strap: Always wear an anti-static wrist strap when working with sensitive electronic components like motherboards, RAM, or processors. This strap safely discharges static electricity from your body, preventing electrostatic discharge (ESD) which can permanently damage electronic parts.
4. Personal Protective Equipment (PPE):
   1. Safety Glasses: Protect your eyes from flying debris, chemical splashes, or accidental contact with tools.
   2. Workshop Gloves: Protect hands from cuts, chemicals, and provide a better grip on tools.
   3. Overall/Lab Coat: Protect personal clothing from dirt, grease, and potential chemical spills.
5. Fire Safety: Know the location of fire extinguishers and how to use them. Keep flammable materials away from heat sources.
6. First Aid: Be aware of the location of the first aid kit and basic first aid procedures for minor injuries.

Safety Precautions When Using Electronic Equipment and Tools

Using electronic equipment and tools correctly is vital for both personal safety and the longevity of the tools and devices being repaired.

1. Avoid Overloading Electrical Outlets: Do not plug too many devices into a single power outlet or extension cord. Overloading can lead to overheating, short circuits, and fire hazards. Use surge protectors for sensitive equipment.
2. Proper Use of Equipment:
   1. Always use tools for their intended purpose. For example, do not use a screwdriver as a pry bar.
   2. Ensure tools are in good condition; do not use damaged or faulty tools.
   3. Follow the correct procedure for using specialized equipment, such as soldering irons, multimeters, or power supplies.
3. Following Manufacturer Guidelines:
   1. Always read and understand the user manuals or service guides provided by manufacturers for both the equipment being repaired and the tools being used.
   2. Adhere to specified voltage, current, and temperature ratings to prevent damage to components or tools.
   3. Pay attention to any specific safety warnings or instructions provided by the manufacturer.
4. Disconnect Power: Before performing any internal repairs or handling components, always disconnect the device from its power source and, if applicable, remove the battery.
5. Handle Components Carefully: Electronic components can be fragile. Handle them by their edges to avoid damaging pins or sensitive surfaces.

Teaching Methods/Instructional Techniques

Discussion, Demonstration, Guided Practice, Question and Answer, Explanation, Group Work, Practical Activity

Instructional Procedures

Step 1: Introduction

Time: 5 minutes

Teaching Skill: Questioning/Engagement

Teacher’s Activity: The teacher greets the students and asks them about the importance of safety in any practical work. The teacher then introduces the topic: “Safety Precautions in Computer and GSM Repairs.”

Pupils’ Activity: Pupils respond to the questions and listen attentively to the introduction.

Learning Point: Importance of safety

Step 2: Explanation of General Safety Precautions

Time: 10 minutes

Teaching Skill: Explanation/Demonstration

Teacher’s Activity: The teacher explains the general safety precautions in an electronic workshop, such as proper ventilation, organized workspace, and the use of anti-static straps. The teacher demonstrates the correct way to wear an anti-static strap.

Pupils’ Activity: Pupils listen, observe the demonstration, and ask questions for clarification.

Learning Point: Workshop safety rules

Step 3: Discussion on Personal Protective Equipment (PPE)

Time: 10 minutes

Teaching Skill: Discussion/Guidance

Teacher’s Activity: The teacher guides students in groups to discuss and develop ideas for posters on personal protective equipment (PPE) like safety glasses, workshop gloves, and overalls in the workshop while repairing computers and mobile phones. The teacher provides examples of PPE.

Pupils’ Activity: Pupils discuss in groups and contribute ideas for PPE posters.

Learning Point: Types of PPE

Step 4: Explanation of Equipment Usage Safety

Time: 8 minutes

Teaching Skill: Explanation/Illustration

Teacher’s Activity: The teacher explains safety precautions related to using electronic equipment and tools, including avoiding overloading, proper use of equipment, and following manufacturer guidelines. The teacher uses examples of common tools.

Pupils’ Activity: Pupils listen and identify with the examples of tools and equipment.

Learning Point: Equipment handling safety

Step 5: Group Practical Activity on Tool Use

Time: 10 minutes

Teaching Skill: Guided Practice/Supervision

Teacher’s Activity: The teacher guides students to work in groups to practice the safe and appropriate use of basic electronic tools (e.g., opening a casing with a screwdriver, handling components with care). The teacher supervises and corrects any improper handling.

Pupils’ Activity: Pupils practice using tools safely under teacher’s guidance.

Learning Point: Safe tool usage

Step 6: Demonstration of Overall Safety Precautions

Time: 5 minutes

Teaching Skill: Demonstration/Reinforcement

Teacher’s Activity: The teacher demonstrates how to set up a repair workstation, incorporating all the discussed safety precautions, such as clearing the area, wearing PPE, and using an anti-static strap, using a sample computer or mobile phone.

Pupils’ Activity: Pupils observe the comprehensive demonstration and ask questions.

Learning Point: Integrated safety demonstration

Step 7: Evaluation/Review

Time: 5 minutes

Teaching Skill: Questioning/Assessment

Teacher’s Activity: The teacher evaluates the learning by asking the following questions:

1. Mention three general safety precautions in an electronic workshop.
2. Why is it important to use an anti-static strap?
3. List two types of Personal Protective Equipment (PPE) and their uses.
4. How can you ensure safety when plugging in multiple devices?

Pupils’ Activity: Pupils answer orally and in writing.

Learning Point: Understanding safety precautions

Step 8: Note-Taking

Time: 10 minutes

Teaching Skill: Guided Writing

Teacher’s Activity: The teacher guides pupils/students to copy the essential Board Summary notes on general safety precautions and equipment usage safety into their notebooks.

Pupils’ Activity: Pupils/students copy the notes carefully into their notebooks.

Learning Point: Recording lesson notes

Step 9: Conclusion

Time: 2 minutes

Teaching Skill: Consolidation

Teacher’s Activity: The teacher summarizes the key safety precautions discussed and reiterates the importance of always prioritizing safety in computer and GSM repairs. The teacher encourages students to practice these habits.

Pupils’ Activity: Pupils listen and acknowledge the importance of safety.

Learning Point: Reinforcing safety importance

Continuous Assessment/Further Study

Type: Homework/Project

Instruction: Individually or in small groups, design a safety poster for an electronic repair workshop. The poster should include illustrations and clear instructions for at least five safety precautions discussed in class. Use cardboard paper and colours.

1. Design a poster illustrating at least five safety precautions.
2. Include clear, concise text for each precaution.
3. Ensure the poster is colourful and easy to understand.
4. Present your poster to the class next week.

Lesson Keywords

• Safety Precautions – Measures taken to prevent accidents or harm.
• Ventilation – The circulation of fresh air to remove stale air or fumes.
• Anti-static Strap – A device worn on the wrist to prevent electrostatic discharge (ESD) when handling sensitive electronics.
• PPE (Personal Protective Equipment) – Equipment worn to minimize exposure to hazards that cause serious workplace injuries and illnesses.
• Overloading – Connecting too many electrical devices to a power source, exceeding its capacity.
• Manufacturer Guidelines – Instructions and recommendations provided by the maker of a product for its safe and proper use.

Differentiation

Support: Provide simplified charts or diagrams for students who struggle with understanding complex instructions. Pair weaker students with stronger ones for group activities and poster development. Offer pre-drawn outlines for posters.

Extension: Encourage advanced students to research specific types of chemical hazards in electronic repair and their corresponding safety measures. They can also investigate different types of anti-static equipment and their applications.

Suggested Lesson Videos

For further understanding and visual demonstration, students can search for videos on YouTube using the following terms:

• electronic workshop safety precautions nigeria
• how to use anti-static wrist strap
• safety in computer repair