School Pototan National Comprehensive Grade Level Grade 10-STE
High School
Subject Teacher REGHEN L. GALLARON SECTIONS Learning Area TLE- Electronics
Teaching Dates and Time March 19, 2025 GRADE 10- STE Quarter 4th
1:35-2:20 PM
I. OBJECTIVES Objective is to make your lessons and lectures clear and engaging so that students interact and learn the most. An objective is a statement that will describe what
the learner will be able to do after completing the instruction.
A. Content Standards The learners demonstrate an understanding of Silicon Diode and LED.
B. Performance Standards The learners should be able to demonstrate the importance about diode.
C. Learning At the end of the lesson, the learners are expected to:
Competencies/Objectives A. Understand the basic theory and working of diodes;
B. Identify types of diodes and their applications; and
C. Recognize the importance of how to use an analog multimeter to measure resistance and test diodes.
With the LC Code for each
II. CONTENT Diode and Analog Ohmmeter
III. LEARNING RESOURCES Varied sources of materials sustain children’s interest in the lesson and in learning ensure that there is a mix of concrete and manipulative materials as well as
paper-based materials. Hands-on learning promotes concept development.
A. References “Santos, Gil Nonato., et Al. E-PHYSICS IV the next Generation. Rex Book Store, 2003 - Yahoo Search Results.” Yahoo.com, 2013.
B. Other Learning LAS/Module, Google, Diode, Analog Multi-tester
Resources
IV. PROCEDURES These steps should do across the week. Spread out the activities appropriately so that students will learn well. Always be guided by demonstration of learning by
the students that you can infer from formative assessment activities. Sustain learning systematically by providing students with multiple ways to learn new things,
practice their learning, question their learning processes and draw conclusions about what they have learned in relation to their life experiences and previous
knowledge. Indicate the time allotment for each step.
DEVELOPMENTAL ACTIVITIES LEARNERS ACTIVITY/ACTIVITIES
A. Reviewing Previous Preliminary Activities
Lesson or Presenting New
Lesson (Elicit) Prayer One of the students led the prayer.
Greetings (Afternoon, Class!) Good afternoon, Ma’am
Checking of Attendance All Present Ma’am
Review of Past Lesson
1. What are the two types of biasing for a diode? 1. Forwards bias and Reverse bias
2. How can you describe this picture shown below?
2. Connecting a voltage directly to a forward-biased diode creates a large current flow when
the diode resistance is small.
B. Establishing a purpose
for the lesson At the end of the lesson, the learners are expected to: Learners will cooperate and participate what they need to aim after discussion
(Engage) A. Understand the basic theory and working of diodes;
B. Identify types of diodes and their applications; and
C. Recognize the importance of how to use an analog
multimeter to measure resistance and test diodes.
C. Presenting
examples/instances of the Have you ever experienced that your cell phone got wet Learners will participate in the discussion and demonstrate what they read and understand
new lesson accidentally? What did you do then? Did you put it off right away?
(Explore) These are common incidents that may happen to your gadgets. (video downloaded from youtube)
Have you ever investigated the back of appliances at home? You
might have observed that note which states “Risk of Electric Shock”
at the back panel. If your appliances are not working this must be
checked by an authorized electrician.
This time, you will be going to do what an electrician does, but only
a very basic one that is, to test the condition of a diode using an
Analog Ohmmeter. You can use a multitester, using the function of
ohmmeter but if you do not have an actual diode and actual analog
multitester, then you may view simulation process about the lesson
in the internet.
D. Discussing new
concepts and practicing Always remember that a diode has a polarity, which means the flow of
new skills current is in one direction only.
(Explain) Learners will participate in the discussion and demonstrate what they read and understand
Figure 2: Electrical Symbol: Electric current flows from positive
terminal to negative terminal Learners will participate in the discussion and demonstrate what they read and understand
In the actual appearance of the diode, the one with stripe side is
the cathode and with no stripe, the anode side. Flow of electric
current is from anode terminal to cathode terminal.
Figure 3: Flow of conventional current I positive terminal to
negative terminal
An ohmmeter is an instrument that used to test a diode, but in the
market, you will seldom see an ohmmeter. You will use a
multitester instead to check the condition of the diode. (You may
borrow from your science teacher this device.
Learners will participate in the discussion and demonstrate what they read and understand
Connect the diode in the forward bias condition by connecting the
positive terminal (red lead) to the anode and the negative terminal
(black) to the cathode. If the multitester does not move, then the
diode is in good condition. Now put the selector in a high
resistance value (x100) and turn the diode the other way around
(upside-down). See the deflection.
When the diode is in reverse bias, (based on the picture above)
there must be a deflection of the needle in the multitester. In this
case, the diode must be replaced.
When the diode is in forward bias (based on the picture above)
there must be no deflection in the needle of the multitester, but if
the needle deflects a little bit, given in a very low resistance, the
diode is open, then its function does not serve at all. Remember
that diode controls the flow of current if this happens current may
flow, making the whole circuit compromise its function.
E. Developing mastery
(Leads to Formative The learners answer orally
Assessment) Answers may vary
1. What is diode and what is the primary function in a circuit? 1. A diode is a two terminal semiconductor device that allows current to flow in only one
direction. Its primary function is to control the direction of current, typically used for
converting alternating current into direct current.
2. What are the various types of diode behavior? 2. Open diode, Leaky diode, Shortened diode and Good condition
F. Finding practical
applications of concepts Activity Proper.
and skills in daily living Directions: Answers may vary
Read the background information of the concepts carefully.
Study and analyze the concepts presented.
Research for further investigation.
Perform the following activities and answer the guide
questions.
The first thing an electrician does, when he wants to find out why
the appliances are not working, is to check what is happening
inside. They disconnect the power supply and check the
semiconductors one by one. You will test the diode using analog
multitester to decide whether it is good, leaky, short, or open. The
technique is to test the diode in forward bias and reverse bias
G. Making generalization Answers may vary
and abstractions about Guide Questions:
the lesson
(Elaborate) 1. What is a good condition of a good diode? 1. A good diode allows current to flow in one direction (forward bias) and blocks current in
the reverse direction (reverse bias).
2. A bad diode may show the same resistance in both directions, indicating it has no proper
2. How can you identify a bad diode?
polarity it’s either open or shorted.
3. What does it mean if a diode is leaky? 3. A leaky diode allows some current to flow in the reverse direction even when it should
block it.
4. What happens when a diode is shorted? 4. A shorted diode behaves like a piece of wire, offering no resistance in either direction.
H. Evaluating learning
(Evaluate) The learners will answer on their separate sheet of paper.
I. In the given simulation picture below using a Zener diode and
LED, Fill in the appropriate answer in the blank. Write the
1. a. reverse bias
conditions of the diode qualitatively whether; good, leaky, short or
b. good condition
opened. Watched out the polarity of the diode in the picture.
2. a. forward bias
b. bad condition
3. reverse bias
b. good condition
II. Picture Analysis
Using the pictures below, identify if the diode is in good or bad The answers may vary.
condition and write a brief explanation with your answer. Write
your answers on the space provided. 1. This is a good diode because it deflects the needle when the multitester connected in
-- reverse bias and no deflection when in forward bias.
2. This is a bad diode because it deflects the needle of the multi-tester when it is connected
in the forward bias.
I. Additional Activities for Describe scenarios where diodes are used in real-world applications (e.g., LEDs in lighting).
Application or
remediation
(Extend)
V. REMARKS
VI. REFLECTION It will help you to understand how your students best learn and will allow you to be accountable for their progress. By assessing the strengths and weaknesses in
your own teaching, you will develop an awareness of the factors that control and prevent learning.
A. No. Of learners who
earned 80% on the
formative assessment
B. No. Of learners who
require additional
activities for remediation
C. Did the remedial lesson
work?
D. No. Of learners who
continue to require
remediation
E. Which of my teaching
strategies worked well?
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 by: Observed by:
REGHEN L. GALLARON NEMA E. HIMPIT
Teacher I MT I-TLE Department
