Types of hand tools used in mobile phone repairs for JSS 1

Class: JSS 1
Term: First Term
Week: 9
Age: 12 years
Duration: 45 minutes
Subject: Computer Hardware and GSM Repairs
Curriculum Theme: Introduction to mobile Phone Repair
Focal competence: Identify common hardware tools when carrying out mobile phone repairs
Key competencies/values: Collaboration; Problem solving; Responsibility
Skills:

• Manipulate different tools used in repairing mobile phone
• Sketch and label mobile phone tools

Previous Lesson: Meaning of hand tools
Topic: Tools Used For Mobile Phone Repairs: Types Of Hand Tools Used In Mobile
Subject Matter: Types of hand tools used in mobile phone repairs

Specific Objectives

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

Cognitive Domain

• Classify hand tools used for mobile-phone repairs by type or function.
• Explain why a selected tool is appropriate for a given repair task.

Affective Domain

• Appreciate the importance of using the correct tools for mobile phone repairs.
• Demonstrate responsibility in handling repair tools.

Psychomotor Domain

• Select an appropriate hand tool for a stated repair task.
• Identify various hand tools used in 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
• The HeadTeacher Scheme of work

Instructional Materials

The teacher will teach this lesson with the aid of:

• Actual mobile phones (for demonstration)
• Charts showing different hand tools for mobile phone repairs
• Precision screwdriver set
• Plastic prying tools (spudgers)
• Tweezers
• Magnifying lens
• Soldering iron
• Multimeter/battery tester
• PCB holder/stand

Rationale for the Lesson

This lesson is essential for students to understand the fundamental equipment required for mobile phone repairs. Knowing the correct tools and their uses is crucial for safe, effective, and damage-free repair work. It lays the groundwork for practical skills in computer hardware and GSM repairs.

Prerequisite/Previous Knowledge

Students should have a basic understanding of what a mobile phone is and its general components.

Lesson Content/Board Summary

Types of Hand Tools Used in Mobile Phone Repairs

Hand tools are essential for disassembling, repairing, and reassembling mobile phones. Using the correct tool for each task helps prevent damage to the phone and ensures a successful repair.

Classification of Hand Tools for Mobile Phone Repairs

Hand tools for mobile phone repairs can be classified based on their primary function:

1. Opening and Disassembly Tools: Used to safely open the phone casing and separate components.
2. Screwdriving Tools: Used to remove and install tiny screws found inside mobile phones.
3. Holding and Securing Tools: Used to hold small components or the phone’s circuit board steady during repair.
4. Inspection and Magnification Tools: Used to view small components and detect tiny faults.
5. Soldering and Desoldering Tools: Used for connecting or disconnecting electronic components with solder.
6. Testing and Measurement Tools: Used to check electrical continuity, voltage, and battery health.
7. Cleaning Tools: Used to clean dust, debris, or corrosion from phone components.

Specific Hand Tools and Their Functions

Here are some common hand tools and their uses:

1. Precision Screwdriver Set:
   • Function: Used to remove and install the tiny screws found in mobile phones. These sets usually contain various screw head types like Phillips, Torx, and Pentalobe.
   • Appropriateness: Essential for accessing internal components without stripping screw heads.
2. Plastic Prying Tools (Spudgers):
   • Function: Used to gently pry open phone casings, disconnect flex cables, and separate glued components without scratching or damaging the device.
   • Appropriateness: Made of soft plastic to prevent damage to delicate plastic or metal edges.
3. Suction Cup:
   • Function: Used to lift the screen assembly off the phone body, especially for phones with glued screens.
   • Appropriateness: Provides a firm grip on smooth glass surfaces for safe separation.
4. Tweezers (Anti-static):
   • Function: Used for handling very small components like screws, flex cables, or ICs (Integrated Circuits). Anti-static tweezers prevent electrostatic discharge.
   • Appropriateness: Allows for precise manipulation of tiny parts that are difficult to handle with fingers.
5. Magnifying Lens/Microscope:
   • Function: Used to magnify small components, circuit board traces, and solder joints for detailed inspection and fault finding.
   • Appropriateness: Helps in identifying tiny defects or misplaced components that are invisible to the naked eye.
6. Soldering Iron:
   • Function: Used to heat solder to create electrical connections between components or repair broken connections on a Printed Circuit Board (PCB).
   • Appropriateness: Essential for component-level repairs involving micro-soldering.
7. PCB Holder/Stand:
   • Function: Used to securely hold the phone’s main circuit board (PCB) in place while working on it, preventing movement and damage.
   • Appropriateness: Frees up hands for intricate repair work and ensures stability.
8. Multimeter/Battery Tester:
   • Function: Used to test various electrical parameters like voltage, current, resistance, and continuity. A battery tester specifically checks battery health.
   • Appropriateness: Helps diagnose electrical faults, check component functionality, and verify power supply.
9. Anti-static Wrist Strap:
   • Function: Worn on the wrist and connected to a ground point to dissipate static electricity from the body, preventing damage to sensitive electronic components.
   • Appropriateness: Protects delicate phone components from electrostatic discharge (ESD) damage.
10. Cleaning Brush (Anti-static):
    • Function: Used to remove dust, debris, and corrosion from the phone’s internal components and PCB.
    • Appropriateness: Safely cleans sensitive electronics without causing static damage.

Selecting Appropriate Hand Tools for Repair Tasks

Choosing the right tool depends on the specific repair task:

1. Task: Opening a phone with a glued screen.
   • Appropriate Tool: Suction cup and plastic prying tools.
   • Explanation: The suction cup helps to lift the screen, while the plastic prying tools carefully separate the glued edges without causing scratches or cracks.
2. Task: Removing tiny Phillips head screws from the motherboard.
   • Appropriate Tool: Precision Phillips head screwdriver.
   • Explanation: Using the correct size and type of screwdriver prevents stripping the screw head, which can make removal impossible.
3. Task: Replacing a charging port on the PCB.
   • Appropriate Tool: Soldering iron, tweezers, and PCB holder.
   • Explanation: The soldering iron is needed to desolder the old port and solder the new one. Tweezers help position the tiny port, and the PCB holder keeps the board stable.
4. Task: Inspecting a small component for damage.
   • Appropriate Tool: Magnifying lens or microscope.
   • Explanation: These tools provide a magnified view, allowing for detailed examination of tiny components that cannot be seen clearly with the naked eye.

Teaching Methods/Instructional Techniques

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

Instructional Procedures

Step 1: Introduction

Time: 5 minutes

Teaching Skill: Engaging/Activating Prior Knowledge

Teacher’s Activity: The teacher asks students about their understanding of “tools” and why they are important for specific jobs, linking it to mobile phone repair.

Pupils’ Activity: Students share their ideas about tools and their importance.

Learning Point: Importance of tools

Step 2: Identifying Hand Tools for Mobile Phone Repairs

Time: 8 minutes

Teaching Skill: Identification/Demonstration

Teacher’s Activity: The teacher displays various hand tools (actual tools or charts) used in mobile phone repairs and names each one, explaining its basic appearance.

Pupils’ Activity: Students observe the tools and repeat their names after the teacher.

Learning Point: Names of repair tools

Step 3: Discussing Functions of Hand Tools (Group Work)

Time: 10 minutes

Teaching Skill: Group Discussion/Facilitation

Teacher’s Activity: The teacher divides students into groups, assigns each group a few tools, and asks them to discuss the possible functions of those tools based on their appearance, guiding them with questions.

Pupils’ Activity: Students discuss in groups and brainstorm the uses of the assigned tools.

Learning Point: Tool functions brainstorm

Step 4: Explaining Specific Functions of Hand Tools

Time: 7 minutes

Teaching Skill: Explanation/Elaboration

Teacher’s Activity: The teacher consolidates the group discussions, provides detailed explanations of the function and appropriate use for each identified hand tool (e.g., precision screwdriver, prying tools, soldering iron, multimeter, etc.).

Pupils’ Activity: Students listen, take notes, and ask clarifying questions about tool functions.

Learning Point: Detailed tool functions

Step 5: Classifying Hand Tools by Type or Function

Time: 5 minutes

Teaching Skill: Classification/Categorization

Teacher’s Activity: The teacher guides students to classify the discussed hand tools into categories based on their primary functions (e.g., opening, screwing, soldering, testing, holding).

Pupils’ Activity: Students participate in classifying the tools into appropriate categories.

Learning Point: Tool classification by function

Step 6: Selecting Appropriate Tools for Repair Tasks

Time: 5 minutes

Teaching Skill: Application/Problem Solving

Teacher’s Activity: The teacher presents various hypothetical mobile phone repair tasks (e.g., “open a phone,” “remove a tiny screw,” “check battery voltage”) and asks students to suggest the appropriate tool and explain why.

Pupils’ Activity: Students select tools for tasks and explain their choices.

Learning Point: Tool selection rationale

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. Name three hand tools used for mobile phone repairs.
2. What is the function of a precision screwdriver?
3. Which tool would you use to gently open a phone casing?
4. Why is it important to use an anti-static wrist strap?

Pupils’ Activity: Pupils answer orally and in writing.

Learning Point: Assessment of tool knowledge

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 on types and functions of hand tools into their notebooks.

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

Learning Point: Recording lesson notes

Step 9: Conclusion

Time: 1 minute

Teaching Skill: Consolidation

Teacher’s Activity: The teacher summarizes the lesson by reiterating the importance of knowing and using the correct hand tools for safe and effective mobile phone repairs.

Pupils’ Activity: Students listen and reflect on the lesson.

Learning Point: Lesson summary

Continuous Assessment/Further Study

Type: Homework/Practice Exercise

Instruction: Answer the following questions in your notebook:

1. List five hand tools used in mobile phone repairs and state one function for each.
2. Imagine you need to replace a damaged screen on a mobile phone. List the hand tools you would need for this task and explain why you chose each one.
3. Draw and label any two hand tools you learned about today.

Lesson Keywords

• Hand Tools – Manual devices used for specific tasks in repairs.
• Precision Screwdriver – A small screwdriver for tiny screws.
• Spudger – A plastic tool for prying open phone casings.
• Soldering Iron – A tool used to melt solder for electrical connections.
• Multimeter – A device for measuring electrical properties.
• PCB Holder – A stand to secure the phone’s circuit board.
• Tweezers – Small tools for handling tiny components.

Differentiation

For weaker learners: Provide pre-labeled charts of tools. Focus on identifying and stating one basic function for each of the most common tools. Pair them with stronger learners during group activities.
For stronger learners: Challenge them to research additional specialized tools not covered in class or to describe the safety precautions associated with each tool.

Suggested Lesson Videos

JSS1 mobile phone repair tools on YouTube

Teacher Guide for Using This Lesson Plan

Before the lesson, gather actual examples of common mobile phone repair hand tools or prepare clear visual aids like charts or large pictures. Begin by engaging students with questions about tools in general. During the identification and function stages, demonstrate how each tool is held and used, emphasizing safety, especially with the soldering iron. Encourage group discussion to promote collaboration and problem-solving. Guide students to classify tools by their function and practice selecting appropriate tools for various repair scenarios. Ensure students copy the Board Summary notes accurately during the note-taking phase. For assessment, use the evaluation questions to check understanding of tool identification, function, and appropriateness. Provide support for students who struggle and extend the learning for those who grasp concepts quickly through additional research or tasks.