AREA OF PARALLELOGRAM

1. INNOVATIVE LESSON PLAN Std: 1X
NAME OF THE TEACHER: ASWATHY.C.B
Str: 29
NAME OF THE SCHOOL: NEW HIGHER SECONDARY SCHOOL
Duration: 45 minute
NELLIMOODU
SUBJECT: MATHEMATICS
Date:
UNIT: AREA
TOPIC: AREA OF PARALLELOGRAM
CURRICULAR STATMENT
Area of parallelogram is the product of its base and height.
CONTENT ANALYSIS
TERM: Parallelogram
FACTS
• Parallelogram has 4 sides and 4 angles.
• Opposite sides of a parallelogram are parallel and equal.
• When a perpendicular bisector is drawn from one of the side of parallelogram,
it is divided into two equal rectangles.
• Area of parallelogram will be the area of rectangles.
CONCEPT
The Concept of area of parallelogram.
PRINCIPLE
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2. Area of parallelogram is the product of its base and the distance to the opposite side.
PROCESS
The process of finding area of parallelogram
FORMULA
Area of parallelogram = bh
SYMBOLS
b - Length of one of the base of parallelogram
h - Height
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3. LEARNING EXPERIANCE
PUPIL RESPONSE
INTRODUCTION
Today we are going to study mathematics in a new way.
Are you ready?
Yes
I had a problem you can help me?
Yes
Do you help me?
Yes
My neighbour named kuttappi decided to draw a quadrilateral. The
Quadrilateral had some specialities. Opposite sides of quadrilateral are
Parallel and equal. He draws it in a cardboard and decided to water paint.
It to make colourfully. But he don’t know how much water paint is
Needed for it.
Can you help him?
Yes
What is the name of quadrilateral?
Parallelogram
How do you know it?
Parallelogram is a quadrilateral whose
Opposite’s sides are parallel and
equal.
How will you help kuttappi?
Find the area of parallelogram
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4. So today we are going to study area of parallelogram.
ACTIVITY
The whole class is divided into 4 groups. Each group is provided with
Matchsticks and a coconut stick .Each group is asked to make a
Parallelogram with the match stick.
4

5. We have to find the area of parallelogram.
Then they are asked to divide the parallelogram will be the area of
rectangles with the coconut stick.
Students are asked to find the speciality of two rectangles. Student
finds that the two
rectangles are Equal.
Then the area of parallelogram will be the area of rectangle.
.
. . Area of parallelogram =2 Area of rectangle.
If base side is of ‘b’ length and the other side is of ‘h’.
Length,
Area of rectangle =b*h/2
Area of parallelogram=2*Area of rectangle
=2*b*h/2
= bh
REVIEW
5

6. Find the area of parallelogram if length of its base is 15cm and the distance between
them is 7cm.
b= 15cm
h=7cm
Area of parallelogram = bh
=15*7
=105cm2
FOLLOW UP ACTIVITY
Find the area of parallelogram
(1) If b=28cm and h=14cm
(2) If b=1.5cm and h=9cm
(3)If b=13cm and h=7cm
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