Types of safety precautions in mobile phone repair for JSS 1

Class: JSS 1
Term: First Term
Week: 3
Age: 12 years
Duration: 45 minutes
Subject: Computer Hardware and GSM Repairs
Curriculum Theme: Introduction to Mobile Phone Repair
Focal competence: Observe safety rules for mobile phone repairs
Key competencies/values: Communication; Critical Thinking; ICT and Digital Competencies; Responsibility
Skills:

• Usage of various protective equipment for mobile phone repairs

Previous Lesson: Safety rules in handling tools
Topic: Safety Rules In Mobile Phone Repairs: Types Of Safety Precautions In Mobile Phone
Subject Matter: Types of safety precautions in mobile phone repair

Specific Objectives

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

Cognitive Domain

• identify the types of safety precautions in mobile phone repair;
• state safety precautions for in mobile phone repair;
• list types of safety precautions in mobile phone repairs.

Psychomotor Domain

• describe appropriate personal protective equipment (PPE) for mobile phone repairs.

Reference Materials

The following resources were used in planning this lesson:

• 2025 Revised 9 Years Basic Education Curriculum
• Relevant State Unified Scheme of Work
• Basic Computer Hardware and GSM Repairs for Junior Secondary Schools Book 1
• The HeadTeacher Scheme of work

Instructional Materials

The teacher will teach this lesson with the aid of:

• PPE such as: Hand Glove, Antistatic jacket/ Apron, Handset, Antistatic mat, Smoke absorbers/detector, Safety goggle, Respirators/nose guard, Fire extinguisher
• Internet
• Charts showing different safety precautions and PPE

Rationale for the Lesson

This lesson is important because it teaches students how to work safely when repairing mobile phones, preventing injuries and damage to devices. Understanding safety precautions helps students develop responsible work habits and protects them from potential hazards like electrical shocks or chemical exposure. It also lays a foundation for proper professional practice in the field of mobile phone repair.

Prerequisite/Previous Knowledge

Students have a basic understanding of mobile phones and general safety rules from their everyday experiences.

Lesson Content/Board Summary

Safety Rules In Mobile Phone Repairs: Types Of Safety Precautions In Mobile Phone

Introduction to Safety in Mobile Phone Repair

Mobile phone repair involves working with electricity, small components, and sometimes chemicals, which can be dangerous if proper safety measures are not followed. Safety precautions are rules and actions taken to prevent accidents, injuries, or damage to equipment during repair work.

Types of Safety Precautions in Mobile Phone Repair

Safety precautions in mobile phone repair can be categorised into different types:

1. Electrical Safety: These precautions protect against electric shocks and short circuits.
2. Chemical Safety: These precautions prevent harm from hazardous chemicals found in batteries or cleaning agents.
3. Mechanical Safety: These precautions protect against injuries from sharp tools or moving parts.
4. Personal Protective Equipment (PPE) Usage: These involve wearing special gear to protect the body.
5. General Workshop Hygiene: These are rules for maintaining a clean and safe work environment.

Specific Safety Precautions in Mobile Phone Repair

When repairing mobile phones, it is important to follow these specific safety rules:

1. Always disconnect the power source (battery) from the mobile phone before starting any repair work.
2. Use only insulated tools to prevent electrical shocks.
3. Avoid working with wet hands or in a wet environment.
4. Handle mobile phone batteries with care; do not puncture, bend, or expose them to extreme heat, as they can explode or release harmful chemicals.
5. Work in a well-ventilated area, especially when dealing with chemicals or soldering fumes.
6. Dispose of old batteries and hazardous materials properly according to environmental guidelines.
7. Keep your workspace clean, tidy, and free from clutter to prevent accidents.
8. Ensure a fire extinguisher is readily available in the repair area.
9. Avoid eating, drinking, or smoking in the repair area to prevent contamination.
10. Always follow manufacturer’s instructions for any repair procedure or tool.

Personal Protective Equipment (PPE) for Mobile Phone Repairs

Personal Protective Equipment (PPE) are items worn to minimise exposure to hazards that cause serious workplace injuries and illnesses. Appropriate PPE for mobile phone repairs include:

1. Hand Gloves: These protect hands from sharp objects, chemicals, and static electricity. They also help prevent oils and dirt from hands transferring to sensitive components.
2. Antistatic Jacket/Apron: This garment is worn to prevent static electricity from the body from damaging sensitive electronic components inside the phone.
3. Antistatic Mat: This is a special mat placed on the workbench that dissipates static electricity, providing a safe, static-free surface to work on.
4. Safety Goggles: These protect the eyes from splashes of chemicals, dust, or small flying debris that might occur during repair.
5. Respirators/Nose Guard: These are used to protect the respiratory system from inhaling harmful fumes, dust, or particles, especially when soldering or using cleaning agents.
6. Smoke Absorbers/Detectors: A smoke absorber helps to extract harmful fumes generated during soldering, while a smoke detector alerts to the presence of smoke, indicating a potential fire.
7. Fire Extinguisher: This is a crucial safety device kept nearby to put out small fires, especially electrical or chemical fires that might occur.

Teaching Methods/Instructional Techniques

Discussion, Demonstration, Guided Practice, Question and Answer, Explanation, Observation

Instructional Procedures

Step 1: Introduction

Time: 5 minutes

Teaching Skill: Questioning/Activating prior knowledge

Teacher’s Activity: The teacher asks students about general safety rules they know and why safety is important in any work environment.

Pupils’ Activity: Students share their ideas about general safety and its importance.

Learning Point: Importance of safety.

Step 2: Identifying Safety Precautions

Time: 7 minutes

Teaching Skill: Explanation/Identification

Teacher’s Activity: The teacher introduces the concept of safety precautions specifically in mobile phone repair and asks students to identify any potential dangers in repairing phones.

Pupils’ Activity: Students identify possible dangers and suggest initial safety ideas.

Learning Point: Basic mobile repair dangers.

Step 3: Explaining Types of Safety Precautions

Time: 7 minutes

Teaching Skill: Explanation/Categorisation

Teacher’s Activity: The teacher explains the different types of safety precautions: electrical, chemical, mechanical, PPE usage, and general hygiene, giving brief examples for each.

Pupils’ Activity: Students listen attentively, ask questions for clarity, and take mental notes.

Learning Point: Categories of safety precautions.

Step 4: Listing Specific Safety Rules

Time: 7 minutes

Teaching Skill: Listing/Explanation

Teacher’s Activity: The teacher lists and explains specific safety rules such as disconnecting power, using insulated tools, handling batteries carefully, and working in a ventilated area. The teacher may use charts to illustrate.

Pupils’ Activity: Students observe the charts, listen to explanations, and note down key rules.

Learning Point: Detailed safety rules.

Step 5: Describing PPE

Time: 7 minutes

Teaching Skill: Demonstration/Description

Teacher’s Activity: The teacher presents and describes various Personal Protective Equipment (PPE) like hand gloves, antistatic jacket/apron, safety goggles, and fire extinguisher, explaining the use of each item. (If actual items are available, demonstrate their use).

Pupils’ Activity: Students observe the PPE items, listen to their descriptions, and ask questions about their function.

Learning Point: Personal protective equipment.

Step 6: Group Discussion on Safety

Time: 5 minutes

Teaching Skill: Group Work/Discussion

Teacher’s Activity: The teacher divides students into small groups and asks them to discuss the importance of specific safety rules and PPE in preventing accidents during mobile phone repair.

Pupils’ Activity: Students discuss in their groups and share their findings with the class.

Learning Point: Collaborative safety understanding.

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 two types of safety precautions in mobile phone repair.
2. State one safety precaution for handling mobile phone batteries.
3. List three items of Personal Protective Equipment (PPE) used in mobile phone repair.
4. Describe the function of safety goggles.

Pupils’ Activity: Pupils answer orally and in writing.

Learning Point: Understanding safety precautions.

Step 8: Note-Taking

Time: 4 minutes

Teaching Skill: Guided Writing

Teacher’s Activity: The teacher guides pupils/students to copy the essential Board Summary notes into their notebooks, specifically focusing on the types of safety precautions and PPE.

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

Learning Point: Recording lesson content.

Step 9: Conclusion

Time: 3 minutes

Teaching Skill: Reinforcement

Teacher’s Activity: The teacher summarises the key safety precautions and the importance of using PPE in mobile phone repair, encouraging students to always prioritise safety.

Pupils’ Activity: Students listen and confirm their understanding of the lesson.

Learning Point: Reinforcing safety principles.

Continuous Assessment/Further Study

Type: Homework

Instruction: Answer the following questions in your notebook.

1. Explain why it is important to work in a well-ventilated area when repairing mobile phones.
2. Research and list two other safety tools or equipment not mentioned in class that can be used in mobile phone repair.
3. Draw and label any three items of Personal Protective Equipment (PPE) used in mobile phone repair.

Lesson Keywords

• Safety precautions – Rules and actions taken to prevent accidents or harm.
• PPE – Personal Protective Equipment, gear worn to protect the body.
• Antistatic – Prevents the buildup of static electricity.
• Respirator – A device worn to protect the wearer from inhaling harmful dusts, fumes, vapours, or gases.
• Fire extinguisher – A device used to put out small fires.
• Electrical safety – Measures to prevent hazards from electricity.
• Chemical safety – Measures to prevent harm from chemicals.

Differentiation

For students who may struggle, provide simplified charts with clear pictures of PPE and safety actions, and pair them with stronger students for group discussions. For faster learners, challenge them to research and present on the consequences of not following specific safety precautions or to identify safety standards in a professional mobile repair workshop.

Suggested Lesson Videos

For further understanding, search on YouTube for: mobile phone repair safety precautions JSS 1

Teacher Guide for Using This Lesson Plan

Before the lesson, ensure you have gathered all necessary instructional materials, especially visual aids or actual PPE items, to make the lesson practical and engaging. Begin by discussing general safety to connect with students’ prior knowledge. Systematically introduce each type of safety precaution and then detail specific rules, using demonstrations where possible. Emphasise the importance and function of each PPE item. Encourage active participation through questions and group discussions. During Step 7, ensure questions directly assess the learning objectives. Allow students to copy the Board Summary notes in Step 8 to reinforce learning. Always stress the critical role of safety in preventing accidents and ensuring a healthy work environment. Provide additional support to weaker learners by simplifying explanations and offering more visual cues, while challenging advanced learners with research tasks.