SEMI-DETAILED LESSON PLAN
School:
Teacher
Date:
I. OBJECTIVES
Central National High School
Alven F. Argel
February 29, 2024
Grade level:
Learning area:
Quarter:
A. Content Standards
7
Mathematics
3rd
The learners demonstrate an understanding of:
Demonstrates understanding of key concepts of geometry of shapes
and sizes, and geometric relationships.
1. Performance Standards The learners should be able to:
is able to create models of plane figures and formulate and solve
accurately authentic problems involving sides and angles of a
polygon.
2. Learning Competencies Learning Competency: Illustrates polygons (M7GE-IIIe-2)
and Objectives
Learning Objectives:
1. Define polygon;
2. Identify a convex and con-cave polygons;
3. Illustrate the different classifications of polygons; and
4. Appreciate the use of polygons in real life situation.
II. CONTENT: Illustrates polygons
III. LEARNING RESOURCES
A. References
1. Teachers guide Pages
2. Learner’s Material Pages
Mathematics-quarter 3- Module 5. Page 5-7
3. Textbook Pages
4. Additional Materials
Colored paper, Scissor, tape, illustration board, power point
B. Other Learning Resources
IV. PROCEDURES
Preliminary Activities
1. Greetings
2. Prayer
3. Cleanliness
4. Orderliness (sitting arrangement)
A. Elicit
The teacher asked the students to look around
Reviewing previous lesson or inside the classroom. Then ask them what are the
presenting the new lesson
shapes they see.
B. Engage
The teacher informs the class to group themselves
with four members each. Ask them to get the
Establishing a purpose for materials that they were asked to prepare: colored
the lesson
paper and scissors. The teacher asked the students
to cut different shapes using the colored paper.
examples or instances of
the new lesson
The students put the different shapes on the
illustration board and raised to check their fellow
classmates.
Examples of shapes did the students cut:
5. Explore
The teacher ask the students what are the shapes
Discussing new concepts they cut and think what is the topic for this day
and practicing new skill #1
and tell the objectives.
Polygons in mathematics, a polygon is a closed
two-dimensional figure made up of line segments
but not curves. The term polygon originates
from the Greek word “poly -” meaning “many” and
“-gon,” meaning “angles.” Polygons are named
according to the number of sides and angles they
have.
before introducing the different polyon, the teacher
play a song entitled; the polygon song
https://youtube.be/g6lifwZNK3k?feature=shared
Types of Polygons:
Depending on the sides and angles, the polygons
are classified into different types, namely:
1. Regular Polygon
2. Irregular Polygon
Regular Polygon- A regular polygon is a polygon in
which all the interior angles are equal, and also, all
the sides are equal.
Irregular Polygon- Irregular polygons have sides
that are not equal in length and angles that are not
equal in measure. As a result, they’re also known
as non-regular polygons. In our daily lives, we see
irregular polygons in the same way that we see
regular polygons. An irregular polygon’s shape may
not be as perfect as a regular polygon’s, but it is a
closed figure with different side lengths.
Discussing new concepts
CONVEX AND CONCAVE POLYGON
and practicing new skill #2
CONVEX POLYGON
A polygon is a two-dimensional shape that has a
minimum of three sides and angles. A convex
polygon is a shape in which all of its vertices point
in the outward direction. Any shape that has a
curved surface, and is also closed is defined as
convex. The surfaces of the convex shape or object
seem to project outward. In other words, no part of
it points inwards.
Every interior angle of a convex polygon is less than
180°.
Example of convex polygon
CONCAVE POLYGON
Defined as a polygon in which one or more interior
angles are more than 180°. If any of the diagonals
of a polygon are formed partly or fully outside the
polygon, then it is called a concave polygon.
Example of concave polygon
6. Explain
Developing Mastery (Leads
to Formative Assessment)
“YOU BELONG WITH ME”
The students get their work on the board and
identify the regular and irregular polygons. After
that, the teacher asked the students to identify
the convex and concave polygon
REGULAR POLYGON
IRREGULAR POLYGON
CONVEX POLYGON
CONCAVE POLYGON
Each group will raise their work then the teacher
tell them if their classification is correct or not.
7. Elaborate
Finding
practical
applications of concepts and
skills in daily living
The teacher ask the student about where does the
polygon applied in real life situation? (Building
structures, making patterns, organization of
objects, businesses)
Here are some examples of polygons in real-life
situations
Integration of the topic: Arts (shapes), Engineering
(buildings), Architecture (designing of buildings).
Finding
generalizations/ The teacher ask the students the following
abstractions
about
the questions:
lesson
What is a Polygon?
How do you know if a polygon is a regular?
How about irregular polygon?
How do you know if the polygon is convex?
How about the concave polygon?
How are you going to apply polygons in real-life
situation?
F. Evaluate
Answer the following questions.
Evaluate Learning
1. Define the following polygons.
a. Rectangle
b. Pentagon
c. Octagon
2. Illustrate the different
polygons.
a. 2 regular polygons
b. 2 irregular polygon
classifications
of
II. Identify whether the polygons below are
CONVEX or CONCAVE. Write your answer on the
space provided before the number.
G. Extend
Additional activities for
application or remediation
__________1.
__________2.
__________3.
__________4.
__________5.
Assignment:
1. In a short bond paper, create your own real
-life situation that will lead to the application
of the polygons. Provide illustration and
label or name each polygon.
Criteria:
Creativity and Originality
Relevance to the topic
Showing correct labels of polygons
Total
V. REMARKS
VI. REFLECTIONS
A. No. of learners who earned 80% in
the evaluation
B. No. of learners who require
additional activities for remediation
who scored below 80%
40%
30%
30%
100%
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 this 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 by:
Alven F. Argel
Student-Teacher
Checked by:
Raenalyn M. Supetran
Teacher III
Reviewed by:
Star L. Cabayao
Head Teacher II
Noted by:
Jeruel I. Vasquez
Principal IV