Republic of the Philippines Region III Division of Nueva Ecija District of Palayan City PEDRO VALENZUELA ELEMENTARY SCHOOL A Detailed Lesson Plan in Mathematics VI
I.
Learning Objectives Cognitive: 1. Derive the area formulas of a square and rectangle. 2. Solve for the area of a square and rectangle. Psychomotor: Write solutions in finding areas of a square and rectangle correctly. Affective: Appreciate various ways of deriving area formulas of square and rectangle. II. Learning Contents Skill: Reference: Materials: Values:
Deriving area formulas and solving for area of square and rectangle BEC PELC IV.A.3 flash cards, pictures, bond papers, ruler, pencil Appreciation
III. Learning Experiences Teacher’s Activity
Pupil’s Activity
A. Preparatory Activity i. Prayer: Class please stand let us pray (Aerlene lead the prayer) first. Aerlene lead the prayer ii. Greetings: Good morning class
Good morning sir Good morning visitors Good morning classmates
Alright, class take your seat
Thank you
Is everybody present this morning?
Yes sir
1. Mental Computation Drill: Finding the Perimeter of Polygons
Class on our past lesson in math we learned how to get the perimeter of a polygon. Now we will have a short game about perimeter. I will call two (2) of you to answer or solve it mentally. Just give the kind of Polygon and its perimeter enable to win. Are you ready class? The first one who can give the correct answer will be challenge by another.
Yes sir!
Alright, let us start our game. Okay let start with Paolo and Catherine. What kind of polygon and what is the perimeter of this object? (flashes a card with polygon and given value in their respective side)
Side=8cm Yes, Paolo
Sir, that polygon is a square and its perimeter is 32cm.
Correct! You may take your seat now Catherine Who wants to challenge Paolo? Yes, Jimaica Ready? 1,2,3 (flashes another card) 12cm 5cm
What is your answer Jimaica? Correct Maica! You may take your seat Paolo. Who wants to challenge Jimaica?
Sir, that polygon is a rectangle and its perimeter is 34cm.
Yes, Melissa. Give the kind of polygon and its perimeter of this object.
Yes, Melissa? Jimaica, you may take your seat now. Any challenger? Yes Maica. Ready Maica and Melissa? 1,2,3
That kind of polygon is a rectangle and its perimeter is 30meters.
Sir that kind of polygon is a Square and its perimeter is 48cm.
Yes, Maica? You got it right. You may take your seat now Melissa. Who wants to challenge Maica? Okay our last challenger Reynaldo. Get ready here we go.
Yes Maica again!
Our winner is Maica, give her a round of applause. 2. Motivation a. Show the following: A B
Sir that kind of polygon is a triangle and its perimeter is 30meters.
Cllas, what is the Perimeter of Figure A? Yes Jon Javee
Sir, figure A is rectangle and its perimeter is 24 square units.
Very good Jon Javee How about object B? Avy Joy
The perimeter of figure b is perimeter 16 square units.
Very good Avy Joy,
B. Developmental Activities 1. Presentation Alright class lesson for today is about the Formula for finding the Area of square and rectangle. We will start from the area of square
.
The AREA of Square is = (Side)2 or s2 What is the area of square? Melissa
The area of a square is (side)2 or s2
I have an example
Area of Square = S2 Or A =S2 Substitute the value of the side (s). A =6cm2 A =6cm x 6cm
A=36cm2 So the area of this square is 36cm2. Alright, let’s try another example What is the area of a square whose side is equal to 7cm. Who can try to solve this on the board? Yes Ian Are you through Ian? So, what is your answer? Very good
Yes sir Sir, the Area of a square whose sides is measuring 7cm is 49cm2 Yes sir
Now we will go to rectangle? The formula to find the area of a rectangle is length times the width. Please repeat Jovell Correct Jovell. I have an example
To find the area of a rectangle we multiply the length by its width or length times the width.
If the length is 10cm and width is 5cm what is the area of the rectangle? Area of Rectangle = l x w Given: L = 10 cm W = 5 cm Substitute: Sir 10cm, What is the given length? 5cm sir. How about the width? Correct. So if we multiply 10cm by 5cm the answer is what? A = 10cm x 5 cm
That is right.
A
= 50 cm2
Sir 50cm2
So the area of this rectangle is 50cm2. Let’s try another example. If rectangle has the length of 7cm and the width is 4cm what is the area of the rectangle? A(rectangle)= l x w Who can show the answer on the = 7cm x 4cm board? Yes, Noemi A= 28cm2
a. Give more examples.
Who can answer this on the board? Yes Maica answer number one, and Aerlene for number two.
A(rectangle)= l x w = 8cm x 4cm A = 32cm2
A(square)= s2 =(11cm)2 A= 121cm2 Very good Maica and Aerlene.
b. Activity: Group Work (triads) a. Each group constructs the following on bond paper and indicates the dimensions in cm. (They have to measure the actual dimension of the figures.) Square, rectangle. Class we will have a group work, group your selves into 3. Bring out your rulers and pencil; each group will construct the following on a bond paper: square, rectangle. Alright do it now. Listen, measure the dimensions, then write the formula for the area and solve for the area of each figure. Do it for 20mins.
(everyone will look for their desired group mates)
(after 10 minutes) Okay Aerlene’s Group show to us your (the called groups will show what work. they have done and explain their work) Very good everyone.
2. Fixing Skills Direction: Given the following objects find the dimension, then solve for the area. Class with the same group and your ruler, pencils, and a bond paper. Measure the dimension of the following. -A long bond paper -Teacher’s table -A memo pad -one of the charts in the room After your work write all the at the back of your work. Do that for 15 minutes. Yes sir (After 15 minutes) your work paper.
3. Generalization Class again let’s have a recap.
Sir, to find the area of a rectangle we multiply the length by its width What is the formula to get the area or length times the width. of a rectangle? Bryan Anthony. Very good. How about the area of a square? Crystal
The formula to get the area of a square is (side)2 or s2
Very good.
C. Application Direction: Draw the give figure with its dimension. Write the formula in finding its area then solve. 1. A rectangle whose length is 15cm and its width is 10cm 2. A square whose side is 3.5cm 3. A rectangle whose length is 20cm and the width is 25.5 cm. 4. A square whose side is 5cm.
IV.
Evaluation A. Direction: Write the formula for the area of the following: 1) rectangle 2) square B. Direction: Solve for what is being asked.
1.)
V.
2.)
Assignment Solve. Show neat and clear solutions. 1. A rice field is in the form of a rectangle. If its length is 38m and its width is 25m, how many square meters can be planted with rice? 2. A square flower plot has a side of 5m. What is its area? 3. A glass top of an office table has a length of 105cm and a width of 61cm. what is its area? 4. A four equal sided wall clock has a side of 13cm. what is its area?
Prepared by: Armand Estanley M. Gimeno Practice Teacher Approved by: Mrs. Nerissa L. Flores Teacher III
Checked by: Ma. Concepcion V. Lopez Master Teacher - 1
Noted by: Felecisima Crisostomo, Ph.D. Principal