The document provides a semi-detailed lesson plan for a Grade 7 mathematics class on polygons. The lesson plan aims to define polygons and identify different types of polygons according to their number of sides and angles. The plan outlines learning objectives, content, resources, procedures, and assessments. The procedures involve reviewing polygons, establishing purpose through a song, forming polygons in groups, discussing concepts through worksheets, and applying polygons in daily life. The plan aims to help students understand key concepts of geometry and solve problems involving sides and angles of polygons.

1. A SEMI-DETAILED LESSON PLAN IN MATHEMATICS 7
I. LEARNING OBJECTIVES
At the end of the lesson, the students should be able to:
1. Define Polygon
2. Identify the different kinds of polygons according to the number of sides and
angles.
 Content Standard
 The learners demonstrate demonstrates understanding of key concepts of geometry of shapes
and sizes, and geometric relationships.
 Performance Standard
 The learners should be able to create models of plane figures and formulate and solve
accurately authentic problems involving sides and angles of a polygon
 Learning Competency (MELC)
 Illustrates polygons: (a) convexity; (b) angles; and (c) sides.
(M7GE-IIIe-2)
II. CONTENT
 Topic: Different Kinds of Polygons
 Date and Time: April 18, 2023; 2:00PM – 3:00 PM
 Grade Level & Section: Grade 7-Diamond
III. LEARNING RESOURCES
 References: Learners Module 7 Mathematics
 https://www.youtube.com/watch?v=f9KSQqUxW3E
 Additional Materials from Learning Resource (LR) portal:
https://www.youtube.com/watch?v=csbZmkMu6Uc
https://www.youtube.com/watch?v=zI3rUMrRLF8
https://www.youtube.com/watch?v=IaoZhhx_I9s
 Other Learning Resources: Activity Sheets, Manila Paper, PowerPoint Presentation
IV. LEARNING PROCEDURES
TEACHER’S ACTIVITY
A. Reviewing previous or
presenting the new lesson
(5 minutes)
(ELICIT) – “Polygon or Not polygon” and “Regular or Irregular)
 The teacher will recall/review about the previous lesson.
 The students will identify the following figures
B. Establishing a purpose for
the lesson
(5 minutes)
(ENGAGE) – “Polygons Song”
 https://www.youtube.com/watch?v=zI3rUMrRLF8
 Play the song about Polygons
 Let the students analyze the lyrics.
 The teacher will ask a series of questions about the song.
Questions:
1. What is the song all about? Polygons
2. What is a polygon? A Polygon is a closed figure made up of line segments
(not curves) in a two-dimensional plane. Polygon is the combination of two Greek
words, “poly” (means many) and “gon” (means angle).

2. 3. Give the different kinds of polygons based on its sides and angles? Triangle,
quadrilateral, pentagon, hexagon, heptagon, octagon, nonagon, decagon.
4. Based on the video, give examples of polygon that can be found on our
surroundings.
Annotations:
This part of the lesson was integrated to MAPEH Subject specifically in Music.
Integrating music in Math lesson positively impacts every dimension of your
students' learning and development. It speaks to the physical, cognitive,
communication, social-emotional, and sensory domains. Music helps students
learn and remember new information.
C. Presenting
examples/instance of the
new lesson
(15 minutes)
(EXPLORE) “Form a Polygon”
Group Activity:
This is a simple game wherein the students in each group will form different kinds
of polygons using a garter. Then, they will answer the following questions:
1. What type of polygon is formed?
2. How many sides the polygon has?
3. How many angles the polygon has?
4. How many vertices does the polygon has?
Annotations:
This part of the lesson, the teacher utilized Game-based learning as an innovative
learning technique that can increase student motivation, emotional involvement
and enjoyment. (Maxwell Hart, Hadi Hosseini & Mehrnaz Mostafapour, 2020)
D. Discussing new concepts
and practicing new skills
#1
(15 minutes)
(EXPLAIN) – “Complete Me”
 This is a collaborative activity.
 Let the students complete the charts given.
 The teacher will let the groups to work collaboratively to complete the given
chart and present it on the class.
Activity:
Name of
a
Polygon
Figures No. of
Sides
Number of
angles
n-gon
E. Discussing new concepts
and practicing new skills
#2

3. Annotations:
As emphasized by Khoiriya and Husamah (2018) in their study, students in the 21st
century need to develop creative thinking and problem-solving skills as part of their
learning process to improve their academic achievement, particularly in
mathematics and science subjects.
F. Developing Mastery (Lead
to Formative Assessment)
(5 minutes)
 What is a Polygon?
 What are the different kinds of polygons?
 Give examples of polygons that can be found in our surroundings.
G. Finding practical
applications of concept
and skills in daily living
How Polygons are Used in Daily Life Situations
Real life applications of polygons are:
 The squared form of the tiles/bricks you walk on indicates that
they are polygons.
 The truss of a construction or bridge, the walls of a building, and
so on are all polygons. The trusses are triangular, whereas the
walls are rectangular.
 A polygon is the rectangular portion of a chair on which you are
seated.
 A polygon is the rectangular-shaped screen on your laptop,
television, or mobile phone.
 A polygon is an example of a rectangular badminton court.
 Polygons may also be seen in Egypt’s Pyramids (triangular)
 Polygons can also be found on road signs.
 A polygon is a rectangular plot in your backyard garden.
 A polygon is a pattern seen in Colorful T’boli Tapestry (T’nalak)
Annotations:
The part of the lesson, the teacher will integrate the practical applications of mole
concept in daily living. This part was integrated to Science and Technology, Social
studies, TLE, Arts and Values Education.
H. Making generalization and
abstraction about the
lesson
(10 minutes)
(ELABORATE) – Video Lesson
https://www.youtube.com/watch?v=IaoZhhx_I9s
 A Polygon is a closed figure made up of line segments (not curves) in
a two-dimensional plane. Polygon is the combination of two Greek
words, “poly” (means many) and “gon” (means angle).
3 Parts of Polygons
Sides, Angles, and vertices
 Regular Polygon
If all the sides and interior angles of the polygon are equal, then it is
known as a regular polygon. The examples of regular polygons are
square, equilateral triangle, etc.
 Irregular Polygon
If all the sides and the interior angles of the polygon are of different
measure, then it is known as an irregular polygon. For example, a
scalene triangle, a rectangle, a kite, etc.
Classification of polygons according to its sides
Triangle- 3 sides, 3 angles, 3 vertices
Quadrilateral- 4 sides, 4 angles and 4 vertices
Pentagon-4 sides, 5 angles, 5 vertices
Hexagon-6 sides, 6 angles, 6 vertices
Heptagon-7 sides, 7 angles, 7 vertices
Octagon-8 sides, 8 angles, 8 vertices
Nonagon-9 sides, 9 angles, 9 vertices
Decagon-10 sides, 10, angles, 10 vertices
Undecagon-11 sides, 11 angles, 11 vertices

4. Dodecagon-12 sides, 12 angles, 12 vertices
N-gon
Annotations:
This video lesson by Math Antics is about the Mole Concept using English as a
language for more understanding the lesson. Subject integration to English.
I. Evaluating Learning
(5 minutes)
(EVALUATE) – The teacher will distribute a worksheet for students to answer.
J. Additional activities for
application or remediation
(EXTEND) Draw Polygon House
Let the students draw a house using different types of polygons.
Annotations:
A concept of Math projects for students are a great way to get students interested
in math. They can be used to teach new concepts, review old ones, or just provide
some fun and engaging math practice.
I. REMARKS
II. REFLECTION
Signature of Teacher
MELISSA N. GUIANG
PSB Teacher
Signature of School
Head/Supervisor MELINDA C. CARNECER
Principal I/School Principal
Date of Observation

5. Mathematics Presentation Rubrics
Presenters:
Criteria Points
1 2 3 4
Organization Audience cannot
Understand
presentation
because there is
no sequence of
information.
Audience has
Difficulty following
Presentation
because student
jumps around.
Student presents
information in logical
sequence which
audience can follow.
Student presents
information in logical,
interesting
sequence which
audience can follow
Content
Knowledge
Students shows
no understanding
of mathematical
concepts within
the presentation
Students are
Visibly
uncomfortable
with the
mathematical
concepts of the
presentation
Students are at
ease with the
mathematical
concepts of the
presentation but
lack a deep
conceptual
understanding
Students
demonstrate a
complete and
comprehensive
understanding of
the mathematical
concepts in the
presentation
Visual Students use no
visuals
Students
occasionally use
visuals that rarely
support the
presentation and
audience
understanding
Students use
visuals that are
related to the
presentation but
did not
completely
support audience
understanding
The visuals used
supported
audience
understanding
Mechanics Students
presentation
contained four or
more spelling,
grammatical or
mathematical
errors
Presentation had
three spelling,
grammatical or
mathematical
errors
Presentation had
no more than
two spelling,
grammatical or
mathematical
errors
Presentation had
no spelling,
grammatical or
mathematical
errors
Delivery Student
mumbles,
incorrectly
pronounces
terms, and
speaks too
quietly for
students in the
back of class to
hear
Student
incorrectly
pronounces
terms. Audience
members have
difficulty hearing
presentation
Student's voice is
clear. Student
pronounces most
words correctly
Student used a
clear voice and
correct, precise
pronunciation of
terms
Total

6. Teachers Comment: