T. L. E.

9
COMPUTER SYSTEMS SERVICING
Technology and Livelihood Education – CSS – Grade 9
Quarter 3 – Module 2: Faulty or Unsafe Hand Tools

First Edition, 2020

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Published by the Department of Education - Schools Division of Pasig City

Development Team of the Self-Learning Module

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Management Team: Ma. Evalou Concepcion A. Agustin
OIC-Schools Division Superintendent
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 T. L. E. 9
Quarter 3
Self-Learning Module 2
Faulty or Unsafe Hand Tools
Introductory Message

For the Facilitator:

Welcome to the (Technology and Livelihood Education Grade 9) Self-Learning

Module on (Faulty or unsafe hand tools)!

This Self-Learning Module was collaboratively designed, developed and

reviewed by educators from the Schools Division Office of Pasig City headed by its
Officer-in-Charge Schools Division Superintendent, Ma. Evalou Concepcion A.
Agustin, in partnership with the City Government of Pasig through its mayor,
Honorable Victor Ma. Regis N. Sotto. The writers utilized the standards set by the K
to 12 Curriculum using the Most Essential Learning Competencies (MELC) in
developing this instructional resource.

This learning material hopes to engage the learners in guided and independent
learning activities at their own pace and time. Further, this also aims to help learners
acquire the needed 21st century skills especially the 5 Cs, namely: Communication,
Collaboration, Creativity, Critical Thinking, and Character while taking into
consideration their needs and circumstances.

In addition to the material in the main text, you will also see this box in the
body of the module:

Notes to the Teacher

This contains helpful tips or strategies that
will help you in guiding the learners.

As a facilitator you are expected to orient the learners on how to use this
module. You also need to keep track of the learners' progress while allowing them to
manage their own learning. Moreover, you are expected to encourage and assist the
learners as they do the tasks included in the module.
 For the Learner:

Welcome to the (Technology and Livelihood Education Grade 9) Self-Learning

Module on (Faulty or unsafe hand tools)!

This module was designed to provide you with fun and meaningful
opportunities for guided and independent learning at your own pace and time. You
will be enabled to process the contents of the learning material while being an active
learner.

This module has the following parts and corresponding icons:

Expectations - This points to the set of knowledge and skills

that you will learn after completing the module.

Pretest - This measures your prior knowledge about the lesson

at hand.

Recap - This part of the module provides a review of concepts

and skills that you already know about a previous lesson.

Lesson - This section discusses the topic in the module.

Activities - This is a set of activities that you need to perform.

Wrap-Up - This section summarizes the concepts and

application of the lesson.

Valuing - This part integrates a desirable moral value in the

lesson.

Posttest - This measures how much you have learned from the
entire module.
 EXPECTATIONS

At the end of the lesson, the students should be able to:

A. enumerate the different do’s and don’ts in using hand tools;
B. identify the different hazards might happened while using hand tools;
C. appreciate the importance of using safe hand tools.

PRETEST

Directions: Write True if the statement is correct and False if it is wrong.

__________ 1. Never use a screwdriver as a pry bar, a chisel, a punch stirrer or a

scraper.
__________ 2. Use pliers as a hammer on your handle. Such abuses are likely to cause
cracks or breaks.
__________ 3. Leave the knife unattended with the blade exposed.

__________ 4. Improper maintenance causes hand tools to deteriorate in an unsafe

condition.
__________ 5. Keep your free hand close to the cutting line.
 RECAP
Do you still remember our previous lesson about Identifying ang selecting
different types of hand tools? Let’s find out.
Directions. Read the questions carefully and choose the letter of the best
answer.

1. Which tool is used to retrieve parts from location that are too small for
your hand to fit?
a. Flashlight c. Punch down
b. Part Retriever d. Wire cutter
2. Which tool is used to manipulate small parts?
a. Hex Driver c. Tweezers
b. Needle-nose plier d. Wire cutter
3. Which tool is used to loosen or tighten cross-head screws?
a. Flat head screwdriver c. Needle-nose plier
b. Hex driver d. Philips head screwdriver
4. What is a device for performing work on a material or a physical system
using only hands?
a. Cleaning tool c. ESD tool
b. Diagnostic tool d. Hand tool
5. Which tool is used to tighten nuts in the same way that a screwdriver
tightens screws?
a. Hex driver c. Torx screwdriver
b. Part Retriever d. Wire cutter

LESSON

Faulty or Unsafe Hand Tools

Hand tools include a wide variety of non-powered devices, such as wrenches, pliers,
hammers and screwdrivers. Such devices may seem harmless, but they cause a lot
of injuries. The following are hand tools related to safety procedures.

General hazards:

The two most common hazards associated with the use of hand tools include
misuse and improper maintenance.
 Misuse occurs when a hand tool is being used for something other than its
intended purpose. An example of misuse is when we use a screwdriver as a
chisel, which could cause the tip to break and strike someone.
  Improper maintenance causes hand tools to deteriorate in an unsafe
condition. A good example is when include broken wooden handles that cause
the head of the tool to fly off or mushroomed heads that can break upon
impact.
 Place hazardous devices in a safe environment. For example, use non-spark
ling devices in the presence of flammable vapors and dust. Insulated
equipment with appropriate ratings must be used for electrical work.

Personal Protective Equipment:

 The type of Personal Protective Equipment required for the use of tools
depends on the nature of the task. At a minimum, eye protection should
always be worn.
 The use of hand gloves protection can also be necessary to provide protection
against wounds, abrasion, and repetitive impacts.

Do’s and Don’ts in Using Hand Tools

Pliers:
 Do not increase the handle length of the pliers in order to gain more power.
Use the larger pair of pliers or bolt cutters.
 Do not replace the pliers with the wrench when you turn the bolts and nuts.
Pliers cannot properly grip and slip these items.
 Never use pliers as a hammer on your handle. Such abuses are likely to cause
cracks or breaks.
 Cut the hardened wire only with pliers designed for this purpose.
 Always make a right angle cut. Never rock from side to side or bend the
wire back and forth against the cutting edge.

Screwdrivers:
 Never use a screwdriver as a pry bar, a chisel, a punch stirrer or a scraper.
 Always use a screwdriver tip that best fits the screw slot properly.
 Throw the screwdrivers away with damaged or rusty handles.
 Never use pliers on the screwdriver for additional leverage. Only use specially
designed wrench or screwdrivers to accept them.

Utility Knives/ Blades:

 Always use a sharp blade. Dull blades require more force, so they are more
likely to slip. Replace the blade when the blade starts to "tear" instead of
cutting.
 Never leave the knife unattended with the blade exposed. Consider using a
self-retracted knife with a spring-loaded black knife. (The blade will retract
when the pressure is removed.
  Keep your free hand away from the cutting line.
 Do not bend or apply side loads to blades by using them to open cans or pay
loose objects. Blades are brittle and can break easily.

ACTIVITIES

Directions. Enumerate what is being asked. Write your answer on the spaces
provided.

A. Do’s and Don’ts in using hand tools

I: Pliers
1. ________________________________________________________________________
________________________________________________________________________
2. ________________________________________________________________________
________________________________________________________________________
3. ________________________________________________________________________
________________________________________________________________________
4. ________________________________________________________________________
________________________________________________________________________
5. ________________________________________________________________________
________________________________________________________________________

B. General hazards

1. ________________________________________________________________________
________________________________________________________________________
2. ________________________________________________________________________
________________________________________________________________________
3. ________________________________________________________________________
________________________________________________________________________
4. ________________________________________________________________________
________________________________________________________________________

C. Why it is important to use safe hand tools?

___________________________________________________________________________
___________________________________________________________________________
___________________________________________________________________________
 WRAP-UP

Directions. In the graphic organizer below, write down your learnings in Module 2:
Faulty or unsafe hand tools.

Faulty or unsafe hand tools

VALUING

Directions. Read and process the meaning of quotation. Write down your insights
on the spaces provided.

____________________________________________
____________________________________________
____________________________________________
____________________________________________
____________________________________________
____________________________________________
____________________________________________
https://i.pinimg.com/originals/ae/22/69/ae2269b8312a8807e822c3b2d3b0cd2b.jpg
Activities
I: Pliers
 Do not increase the handle length of the pliers in order to gain more power.
Use the larger pair of pliers or bolt cutters.
 Do not replace the pliers with the wrench when you turn the bolts and
nuts. Pliers cannot properly grip and slip these items.
 Never use pliers as a hammer on your handle. Such abuses are likely to
cause cracks or breaks.
 Cut the hardened wire only with pliers designed for this purpose.
 Always make a right angle cut. Never rock from side to side or bend the
wire back and forth against the cutting edge.
Posttest Recap Pretest
1. True 1. B 1. True
2. Sharp 2. C 2. False
3. True 3. D 3. False
4. Pliers 4. D 4. True
5. True 5. A 5. False
KEY TO CORRECTION
purpose.
________________ 5. Cut the hardened wire only with pliers designed for this
________________ 4. Never use knives as a hammer on your handle.
properly.
________________ 3. Always use a screwdriver tip that best fits the screw slot
________________ 2. Always use a dull blade.
________________ 1. Never leave the knife unattended with the blade exposed.
underlined word to make the statement correct.
Directions. Write True if the underlined word is correct, if it is False change the
POSTTEST
 https://www.scribd.com/doc/219418979/CHS-Module-2-Using-Hand-Tools.
“CHS Module 2 - Using Hand Tools.” Accessed August 19, 2020.
References
C. Using safe hand tools is important to ensure safety and to make sure the
job is done correctly.
II: General Hazards
 The two most common hazards associated with the use of hand tools include
misuse and improper maintenance.
 Misuse occurs when a hand tool is being used for something other than its
intended purpose. (An example would be to use a screwdriver as a chisel,
which could cause the tip to break and strike someone).
 Improper maintenance causes hand tools to deteriorate in an unsafe
condition. (Example would include broken wooden handles that cause the
head of the tool to fly off or mushroomed heads that can break upon impact.
 Specially built tools can be required in hazardous environments. (Always
using non-sparkling devices in the presence of flammable vapors and dust.
Insulated equipment with appropriate ratings must be used for electrical
work).