Proportion

1. SELF DESIGNED
INNOVATIVE
LESSON
RATIO AND
PROPORTION
THANSEELA .N
MATHEMATICS
REG NO: 13386008
2013-2014

2. Name of the teacher: Thanseela
Name of the school : G.G..H.S.S.Pattom
Subject : mathematics
Unit : ratio and
proportion
Sub unit : proportion
Class : 8
Division : E
Strength :34/37
Duration : 45 min
Date : 17/7/2014
CURRICULAR STATEMENT
To learn the concept of proportion
CONTENT ANALYSIS
TERMS : fraction, ratio, proportion
FACTS : ratio are used to compare parts of a single thing.
CONCEPT: Individual quantities change, but ratio remain same is called proportion.
PROCESS: process of teaching and learning proportion
PROCESS SKILS: observing, classifying, finding, analyzing, interpreting, calculating
LEARNING OUTCOMES
The pupil,
i. remember the facts, concept,…, related to proportion.
ii. develop understanding above facts, concepts,…,related to proportion
iii. applies the above facts, concepts,…,related to proportion
iv. detects the above facts, concepts,…,related to proportion
v. discriminates the above facts, concepts,…,related to proportion
vi. design a new idea related to proportion
vii. develop skills related to proportion
viii. create interest inactivities related to the concept proportion
PRE-REQUISITES: concept of fraction, ratio
LEARNING AIDS: activity sheet, chart, pointer, ordinary class room equipments.
LEARNING STRATEGIES : group activity, group discussion.

3. Interaction procedure Pupil response
Teacher introduce a new concept to students
Teacher shows different pictures, things to students and ask to
observe them.
Group 1
Group2
Group 3
Group4
Students listen
Students actively participate
Students keenly observe the
pictures
First group response that
both pictures are same. But
different in size.
Second group response that they are
same pictures but different in size
Third group response that they are
same pictures but different in size
Fourth group also response that they
are same pictures but different in size.

4. Teacher explain that these pictures are same but different in size.
Can you say what property is this?
Teacher give another group activity.
group1
To find ratio of each rectangle
And find which have same ratio
A B C
Group 2
find ratio of each triangle And find which have same ratio
fig(a) fig(b)
fig(c
Group3
Find ratio of each parellogram and find which have same ratio
students listen and give many
answers
Students do interestingly
Fig(a) I:b = 2:1
Fig(b) l:b= 4:2=2:1
Fig(c) l:b = 5:2
Fig(a) and fig(b) have same ratio
Figure(a) black : orange 2:1
Figure(b) black : orange 2:2=1:1
Figure(c) black : orange 4:2 =2:1
figure (a) and figure (c) have same
ratio

5. fig(a) fig(b) fig(c)
Group4
 two cups of water and one cup of milk
 six cup of water and 4 cup of milk
 nine cups of water and six cups of milk
Class assignment
Measure the sides of triangle and Check the proportionality of the
following triangle.
Figure(a) ratio of sides
2:2:2:2=1: 1:1:1
Figure(b) ratio of sides
4:4:4:4 = 1:1:1:1
Figure(c) ratio of sides
2:4:2:4=1:2:1:2
Figure (a) and figure (b) have same
ratio.
 Water : milk= 2:1
 Water: milk = 6:4= 3:2
 Water : milk= 9:6= 3:2
Second and third have same ratio.
Students read the chart and
understand the concept of ratio.
Proportion
Individual quantities
change but ratio remain
same

6. i. fig a fig b
Review
What you mean by proportion?
Follow up activity
Home assignment
Verify whether your Mathematics text book and note book are
proportional or not?
1. Collect three same things and check proportionality?
Enrichment activity
Can you Suggest a method to check proportionality .
Students do
Fig(a) 3:3:3= 1:1:1
Fig(b) 2:2:2=1:1:1
So these two figures are proportion.
Individual quantity different but ratio
remain same is called a proportion.
Students write down the questions..