NABUNTURAN NATIONAL
COMPREHENSIVE HIGH SCHOOL
Semi-Detailed
Lesson Plan
TEACHER
JOVIL T VILLARREIZ
TEACHING DATE
AND TIME
March 3, 2022
2:00 – 3:00 PM
GRADE & SECTION
LEARNING AREA
MSES 9
TLE 9
QUARTER
THIRD
I. OBJECTIVES
A. Content Standards
The learner demonstrates an understanding of
Concepts and underlying principles in servicing the ignition system.
B. Performance Standards
The learners should be able to:
Independently performs servicing the ignition system based on industry standards.
Task:
The learners should be able to:
a. Identify the functions of sparkplugs and on how to evaluate the sparkplugs
b. Remove spark plug with no damage as per manufacturer’s instruction.
c. Value the importance of proper maintenance of sparkplug to maintain
maximum performance
C. Learning
Competencies/
Objectives
(Write the LC code)
TLE_IAMSES9-12SIS-IIIf-43
II. CONTENT
Check and Remove Sparkplug
III. LEARNING RESOURCES
A. References
1. Curriculum Guide pages
2. Learner’s Materials pages
3. Textbook pages
4. Additional Materials from
Learning Resource (LR)
portal
B. Other Learning
Resources
22
IV. PROCEDURES
A. Reviewing previous lesson or
presenting the new lesson
Elicit:
(The activities in this section will evoke
or draw out prior concepts or prior
experiences from the students)
ELICIT
(Preliminaries)
 Students are to identify shown images of different types of cooling system
of the motorcycles
(For TLE Subject Area: Review)
B.
Establishing a purpose for the
lesson
ENGAGE
C. Presenting
examples/instances of the
new lesson
Engage:
(The activities in this section will
stimulate their thinking and help them
access and connect prior knowledge
as a jumpstart to the present lesson.)
(For TLE Subject Area: Motivation)
(537) DIY Canon bomb making // boga paano gawin - YouTube
Present a video presentation on how to create a DIY canon bomb(boga)
D. Discussing new concepts and
practicing new skills #1
(For TLE Subject Area: Activity)
E.
Discussing new concepts and
practicing new skills #2
EXPLORE
 How can we create I fire?
 How about a spark? How can we produce one?
 What is a spark plug? What is their function on the engine?
 How can we tell if the sparkplugs are defective?
Explore:
(In this section, students will be given
time to think, plan, investigate, and
organize collected information; or the
performance of the planned/prepared
activities from the students’ manual
with data gathering with Guide
Questions)
(For TLE Subject Area: Analysis)
EXPLAIN
 A spark plug is a device for delivering electric current from an ignition
system to the combustion chamber of a spark-ignition engine
FUNCTION
F.
Developing mastery (leads to
Formative Assessment 3)
(For TLE Subject Area: Abstraction)
Explain:
(In this section, students will be
involved in an analysis of their
exploration. Their understanding is
clarified and modified because of
reflective activities)/Analysis of the
gathered data and results and be able
to answer the Guide Questions leading
to the focus concept or topic for the
day.)
-
-
To ignite the air/fuel mixture. Electrical energy is transmitted through
the spark plug, jumping the gap in the plugs firing end if the voltage
supplied to the plug is high enough. This electrical spark ignites the
gasoline/air mixture in the combustion chamber.
To remove heat from the combustion chamber. Spark plugs cannot
create heat, they can only remove heat. The temperature of the end of
the plug\'s firing end must be kept low enough to prevent pre-ignition,
but high enough to prevent fouling. The spark plug works as a heat
exchanger by pulling unwanted thermal energy from the combustion
chamber and transferring heat to the engines cooling system. The heat
range of a spark plug is defined as its ability dissipate heat from the tip.
to ignite the compressed fuel/air mixture by an electric spark, while
containing combustion pressure within the engine.
 It must permit reliable cold starting.
 It must guarantee that there is no misfiring during acceleration
and
 It must withstand the engine being operated for hours at
maximum power
How to evaluate/check spark plugs?
Combustion deposits are slight and not heavy
enough to cause any detrimental effect on engine
performance. Brown to greyish tan color and
minimal amount of electrode erosion which clearly
indicates the plug is the correct heat range and has
been operating in a “healthy” engine
This plug has served its useful life and should be
replaced. The voltage required to fire the plug has
approximately doubled and will continue to increase
with additional miles of travel. Poor engine
performance and a loss in fuel economy are traits of
a worn spark plug
Soft, black sooty deposits easily identify this plug
condition. This most often caused by an over-rich airfuel mixture
A clean, white insulator firing tip and/or excessive
electrode erosion indicates this spark plug condition.
This is caused by over advanced ignition, timing,
poor engine cooling efficiency, a very lean air/fuel
mixture, or a leaking intake manifold
A build up of combustion deposits stemming
primarily from the burning of oil and fuel additives
during normal combustion. When heavier deposits
are allowed to accumulate over a longer mileage
period, they can mask the spark resulting in a plug
misfire condition
Too much oil is entering the combustion chamber.
This is often caused by piston rings or cylinder walls
that are badly worn. Oil may also be pulled into the
chamber because of excessive clearance in the valve
stem guides.
May be caused by a foreign object that has
accidentally entered the combustion chamber. This
condition may also be due to improper reach spark
plugs that permits the piston to touch or collide with
the firing end
This form of abnormal combustion has fractured the
insulator core nose of the plug. The explosion that
occurs in this situation apples extreme pressures on
internal components. Prime causes include ignition
time advance too far, lean air/fuel mixtures, and
insufficient octane rating of the gasoline
G. Finding practical applications of
concepts and skills in daily
living
Elaborate:
(This section will give students the
opportunity to expand and
solidify/concretize their understanding
of the concept and/or apply it to a realworld situation).
(For TLE Subject Area: Application)
H. Evaluating learning
Evaluation:
(This section will provide opportunities
for concept check test items and
answer key which are aligned to the
learning objectives – content and
performance standards and address
misconceptions- if any)
(For TLE Subject Area: Assessment)
ELABORATE
Process To Replacing Motorcycle Spark Plugs
Here is how to replace the spark plugs on your motorcycle:
1. Make sure you have the right spark plugs.
2. Gather the right tools.
3. Locate the spark plugs and remove the spark plug wires
4. Using your spark plug socket and a socket wrench, turn the spark plug
counterclockwise
5. Once removed, inspect the condition of the spark plug as it can tell you
a lot about how your engine is running
6. Check the gap of the new spark plug
7. Install the new spark plug by hand
8. Once the washer on the plug is seated to the engine, give it ¼-½ a turn
clockwise with your socket wrench
A. Direction: Select the correct answer by encircling the letter of the best answer
1. To ignite the air/fuel mixture. Electrical energy is transmitted through it by
jumping the gap in the plugs firing end if the voltage supplied to the plug is high
enough.
a. Ignition Coil
b. Spark Plug
c. Condenser
d.
Contact Point
2. This form of abnormal combustion has fractured the insulator core nose of
the plug.
a. Ash Deposit
b. Detonation c. Mechanical Damage
d. Oil Fouled
3. A build up of combustion deposits stemming primarily from the burning of oil
and fuel additives during normal combustion.
a. Ash Deposit
b. Detonation c. Mechanical Damage
d. Oil Fouled
4. May be caused by a foreign object that has accidentally entered the
combustion chamber.
a. Ash Deposit
b. Detonation c. Mechanical Damage
d. Oil Fouled
5. Too much oil is entering the combustion chamber. This is often caused by
piston rings or cylinder walls that are badly worn.
a. Ash Deposit
b. Detonation c. Mechanical Damage
d. Oil Fouled
I.
Additional activities for
application or remediation
Extend:
(This section gives situation that
explains the topic in a new context, or
integrate it to another
discipline/societal concern)
6. A clean, white insulator firing tip and/or excessive electrode erosion indicates
this spark plug condition..
a. Ash Deposit
b. Carbon Fouled c. Overheated
d. Oil Fouled
7. This plug has served its useful life and should be replaced.
a. Normal
b. Carbon Fouled c. Overheated
d. Worn
8. Soft, black sooty deposits easily identify this plug condition. This most often
caused by an over-rich air-fuel mixture.
a. Normal
b. Carbon Fouled c. Overheated
d. Worn
9. Combustion deposits are slight and not heavy enough to cause any
detrimental effect on engine performance. Brown to greyish tan color and
minimal amount of electrode erosion which clearly indicates the plug is the
correct heat range and has been operating in a “healthy” engine.
a. Normal
b. Carbon Fouled c. Overheated
d. Worn
10. A spark plug is said to be “_____” if it can conduct more heat out of the spark
plug tip and lower the tip’s temperature
a. Normal
b. Cold
c. Hot
d. Worn
EXTEND
The students are task to search in advance about the definition of the
following types of electron ignition systems found on modern motorcycles:
■ AC-CDI: Alternating Current, Capacitor Discharge Ignition
■
DC-CDI: Direct Current, Capacitor Discharge Ignition
■
DC-TPI: Direct Current, Transistorized Pointless Ignition
(For TLE Subject Area: Assignment)
V. REMARKS
VI. REFLECTION
A. No. of learners who earned 80% in the evaluation
B. No. of learners who require additional activities for remediation
C. Did the remedial lessons work? No. of learners who have caught up
with the lesson
D. No. of learners who continue to require remediation
E. Which of my teaching strategies worked well? Why did these work?
F. What difficulties did I encounter which my principal or supervisor can
help me solve?
G. What innovation or localized materials did I use/discover which I wish
to share with other teachers?
Prepared and Submitted by:
JOVIL T. VILLARREIZ
Teacher I
Observed and Checked by:
ERNESTO T. ANOTA
Master Teacher I