V = lbh l = 10cm b = 15cm h = 25cm V = l x b x h V = 10 x 15 x 25 V = 3750cm3

1. Name of the Teacher : KAVITHA.M Standard : VIII
Name of the School : M.C.H.S.S Kumarapuram Division :
Subject : Mathematics Strength :
Unit : Prism Duration : 45’
Topic : Volume of rectangular prism Date : 16.07.2014
CURRICULAR STATEMENT
The Students get an opportunity to attain and apply the following ideas.
i) To understand the term rectangular prism.
ii) To find the volume of rectangular prism.
CONTENT ANALYSIS
Terms : Volume, rectangular prism, length, breadth, height
Fact : Volume of the rectangular prism is the product of its length, breadth and
height.
Volume of the rectangular prism = 2 (lb +bh +lh)
Concept : Finding the volume of rectangular prism.
Process : Volume of the rectangular prism is the product of its length, breadth and
height.
Formulae : V =lbh
V- volume, l- length, b- breadth, h- height
Learning Outcome :
Remembering : The student will be able to recall about surface area of rectangular
prism and volume of rectangular prism
The student will be able to recognize about formulae of volume of
rectangular prism
LESSON TRANSCRIPT

2. Understanding : The student will be able to explain ideas about volume of
rectangular prism
The student will be able to interpreting volume of rectangular prism
Applying : The student will be able to using information in solving problems
The student will be able to implementing about volume of
rectangular prism
Analysing : The student will be able to breaking information into parts to
explore volume of rectangular prism
Evaluating : The student will be able to justifying decision about volume of
rectangular prism
Creating : The student will be able to generating new ideas about volume of
rectangular prism
Interest : The students will be able to develop interest to identifying the
models of rectangular prism, volume of rectangular prism
Skill : The student will be able develop skill in solving problems of
volume of rectangular prism
Pre – requisties :Surface area of rectangular prism, volume, area of rectangular base,
base area.
Teaching learning resource : Model of rectangular prism, chart containing the formula
volume of rectangular prism

3. Class room Interaction Procedure Pupil’s response
Introduction:
To check the previous knowledge of the students,
teacher asks few questions.
Teacher shows the model of a rectangular prism and
asks what is the name of this geometrical figure?
Rectangular Prism
Tell some example for rectangular prism
What are the speciality of rectangular prism?
What is the formula to find out the surface area of
rectangular prism.
Surface area of rectangular prism = 2 (lb + bh + lh)
l – length
b – breath
h – height
Presentation :
Activity 1:
Teacher divide the students into 4 groups and name each
group as triangle, rectangle, square and cube.
Rectangular Prism
Soap cover, toy cover
Two bases and four lateral
faces are rectangles
Surface area of rectangular
prism
2 (lb + bh + lh)

4. Classroom Interaction Procedure
Teacher gives the model of rectangular prism to each
group
Teacher ask the students to marks the length, breadth and
height
h
b
l
What do you mean by volume?
Which measurements are necessary to find volume.
What all measurements are needed to find the volume of
rectangular prism.
Length, breadth and height of rectangular prism.
Pupil’s response
l – length
b – breath
h – height
Volume is the capacity of
an object
Length,breadth,height

5. Classroom Interaction Procedure
We can tell that volume of rectangular prism is the
product of length, breadth and height
.ie; volume of rectangular prism, v= lbh.
l – length, b- breadth, h- height.
Activity -2
Teacher give, the model of rectangular prism to
each group, mark ‘l’ as length, ‘b’ as breadth, ‘h’ as height
on the model.
F G
E H
h
D C
A b
l B
What is the volume of rectangular prism ?
Volume of rectangular prism = lbh
We can write lbh as lb x h
In the given model, what is the name of the geometrical
shape ABCD ?
Rectangle
What is the formula to find the area of rectangle?
Length x breadth
Pupil ’s response
Length,breadth,height
lbh
Rectangle
l x b

6. Classroom Interaction Procedure
If l is length, b is breadth, then what is the area of
rectangle?
Area of rectangle = lb
In the figure, lb is the area of rectangle ABCD? So, what
we called it?
Base Area
ie; volume of rectangular prism = lb x h
= Base area x height
So, with the help of teacher, students came into
conclusion that volume of rectangular prism is the product
of base area and height.
Generalisation:
The volume of rectangular prism is the product of base
area and height.
Teacher shows the chart.
Teacher asks students to read the chart loudly
Pupils Response
lb
base area
Students read the chart
loudly
Volume of Rectangular Prism
Volume of rectangular prism = lbh
l – length, b- breadth, h- height

7. Class room Interaction Procedure
Application:
Class Assignment:
If length 8cm, breadth 5cm and height 10 cm for a
rectangular prism. What is the volume of rectangular
prism.
What is given? l = 8cm, b = 5cm, h = 10cm
What is the formula of rectangular prism?
V = lbh
= 8 x 5x 10
= 400cm3
Pupil’s response
l = 8cm, b= 5cm, h = 10cm
V = lbh
Volume = lbh
=8x5x10
= 400cm3
Review:
What is the formula to find the volume of rectangular prism?
Home Assignment:
For a rectangular prism, length is 10cm, breadth is 15 cm and height is 25cm. How
can we find the volume?