School: Tomas Cabili Central School Grade Level: 4
Name: Neil Vincent E. Medina Learning Area: Mathematics
Teaching Date: April 14, 2023 Quarter: 3
A DETAILED LESSON PLAN IN - MATHEMATICS 4
I. Learning Objectives: At the end of the lesson, the pupils will be able to:
1. derive the formula for perimeter of any given closed figure
2.find the perimeter of triangles, Squares, Rectangles Parallelograms and trapezoids.
Learning Content
Deriving the Formula for Perimeter of Any Given Closed Figure
Finding the Perimeter of Triangles, Squares, Rectangles Parallelograms and trapezoids.
MELC 4,M4ME-llli-51
ll. Learning Resources
A. References: Teacher’s Guide page 192-194 and Learner’s Guide
B. Materials: Cartolina , PowerPoint Presentation
C. Integration: The importance of timeliness in doing a group task.
lll. Learning Activities:
Teacher’s Activity Pupil’s Activity
A. Preliminaries
Prayer
Before we start with our lesson
this morning, let’s have a
prayer. Requesting everyone - (Everyone will stand for the
to please stand. May I ask prayer)
Gabrielle to please lead the
prayer?
Bless us, Father Bless us, Father
With your wisdom as we begin With your wisdom as we begin
our class our class
Greetings
Good morning class! How are
you today?
“Good morning teacher Neil.
We’re all good today”
Have you eaten your snack today?
That’s great! Yes, Teacher Neil
2. Checking of Attendance
Is anyone absent from the class today?
“None Teacher.”
Since you’re all present today, give
yourselves correct clap. (Pupils perform correct claps.)
3. Checking of Assignment
Do we have an assignment today?
“None Teacher”
4. Review
Let’s have a short review. Can you still (A pupil will volunteer.)
remember about our topic last meeting?
Who can tell me what was all it about? “Our Lesson last meeting was about
measuring tool in finding the perimter.
Okay. Very Good.
-Ruler
What are the tools used to find the
perimeter?
-
Meter Stick
Excellent!
-
Tape Measure
5. Motivation
Before we begin our discussion let us
sing first “The perimeter song”
- Steel tape
Perimeter
Triangle
Rectangle
Trapezoid, Square Perimeter
Parallelogram Triangle
Rectangle
Trapezoid, Square
6. Drill and Unlocking of Difficulties Parallelogram
Are you all ready for a new topic?
I have here a flashcard and I want you to
answer it. -“Yes Teacher”
P= 24 units P= 32 Units
P= 24 units P= 32 Units
P= 20 units
P= 20 units
Very Good! Give yourselves a Correct
Clap.
(Pupils will perform correct Clap)
B. During the Lesson
4. Presentation
Derive the formula for perimeter of any given
closed figure
Find the perimeter of triangles, Squares, -Perimeter is the distance around an
Rectangles Parallelograms and trapezoids. object sir.
Now let’s begin our discussion our topic
for today is derive the formula of a (Student’s will read and Listened
perimeter and find the perimeter of a
plane figure Let’s take a look at this figure
What is perimeter?
Figure Formula
Figure Formula
P= S+S+S+S or
4xs P= S+S+S+S or
4xs
P= L+W+L+W
P= L+W+L+W
P=A+B+C
P=A+B+C
P= A+B+C+D
P= A+B+C+D
P= 2(B+H)
-Perimeter is the length around an object. P= 2(B+H)
Let’s take a look at this figure
This is an equilateral triangle.
This is an equilateral triangle. The measure of one side is 20 inches.
The measure of one side is 20 inches.
To find the perimeter of a given figure
let’s solve it by using the formula of a
triangle. Formula:
P= A+B+C
Formula: = 20in. +20in. +20in.
P= A+B+C =60 inches
= 20in. +20in. +20in. This is the perimeter of this triangle.
=60 inches
This is the perimeter of this triangle.
Another figure
The rectangle has 2 long side and 2 short
sides. The long sides has 13 in. And the
short sides 9 in. Another figure
Formula: P= L+W+L+W
=15in.+10in.+15in+10in
=50 inches The rectangle has 2 long side and 2 short
sides. The long sides has 15 in. and the
short sides 10 in.
Another figure a Trapezoid
Formula: P= L+W+L+W
=15in.+10in.+15in+10in
=50 inches
Trapezoid has 4 sides
Formula: P=A+B+C+D
Another figure a Trapezoid
For example
9in. for the top side and 12in. For the both
side and 22in. for the bottom side Trapezoid has 4 sides
P=9 in.+12 in.+22 in. Formula: P=A+B+C+D
P=55 inches
For example
9inch. for the top side and 12in. For the
Another figure both side and 22in. for the bottom side
P=9 in+12 in+22 in
P=55 in.
A parallelogram has 2 pairs of parallel Another figure
sides and its opposite side are equal.
Formula: P=2(B+H)
= 2 (16 in. + 12 in.)
= 2 (28 in) A parallelogram has 2 pairs of parallel
P= 56 inches sides and its opposite side are equal.
Another figure
Square has 4 equal sides Formula: P=A+A+B+B
P=17in.+17in.+12in.+12in.
=58 inches
Another figure
Square has 4 equal sides
Formula: P=S+S+S+S
P= 12in.+12in.+12in.+12 in.
=48 inches.
Formula: P=S+S+S+S
The perimeter of a square is 20 cm P= 12in.+12in.+12in.+12 in.
=48 inches.
The perimeter of a square is 20 cm
Let’s have a Group activity
You will be divided into three (3 groups)
S-hare your own idea.
H- ave a respect
O-penmindedness
W-illingness to learn
Rubric
Content 5 points
Timeliness 5 points
Neatness 5 points
Teamwork 5 points
Total 20 points
Group 1
Sort the cut-out into a shape, then
solve the perimeter given.
Group 2
Use the formula to find the correct answer
in column B. Write the letter’s only.
Group 3
Read and comprehend the problem, then
draw the figure use the formula to find
The perimeter.
Now let’s try if you really understand our
topic. Let’s have a treasure hunting
5. Application
1. What is the formula of a square?
A. P= A+B+C B. P= S+S+S+S
2. What is the formula of trapezoid? 1.What is the formula of a square?
A. P= 2L+2W B. P= A+B+C+D A. P= A+B+C B. P= S+S+S+S
3. What is the formula of 2. What is the formula of trapezoid?
rectangle? A. P= 2L+2W B. P= A+B+C+D
A.P= L+W+L+W B. P= S+S+S+S
3. What is the formula of rectangle?
A. P= L+W+L+W B. P= S+S+S+S
P= L+W+L+W
12cm =
=10cm+7cm+10cm+7cm
13cm = 34cm
7cm
20cm
12cm
P= S+S+S
=15cm+15cm+12cm
=42cm
13cm
6. Generalization
As a whole, what did we discuss this 7cm
morning? 20cm
P= a+b+c+d
What is Perimeter?. =13cm+20cm+7cm+7cm
How to find the perimeter of a given
figure?
Very Good!
Perimeter is the length around an object
What have you learned from our lesson
this morning?
- Add all side of a given figure
sir and use the given formula
-We learned about deriving the formula
for Perimeter of any given closed figure.
And finding the perimeter of triangles,
squares, rectangles, parallelogram and
trapezoid.
Evaluation
Directions: Read and understand the question carefully and answer the following
questions.
A. Find the perimeter of the following figures. 10cm
35cm 10 cm
1.) 2.)
25 cm
40 cm
15 cm
B. Give the formula in finding the perimeter of the following figures. Then use it to find
their perimeters.
4 cm Formula: Perimeter
__________ ________
8 cm
5 cm ___________ ________
Assignment
Find the perimeter of a given figure. Write it on your notebook.
130 cm
78 cm
37 cm
88 cm
1.) 67 cm 2.)
63 cm
57 cm
39 cm
3.)
Prepared and Submitted by: Checked by:
NEIL VINCENT E. MEDINA YVONNE MAY S. SEMBLANTE
Student Teacher Cooperating Teacher
Noted by:
Teresita B. Sambo, PhD
School Principal ll
