similarity

1. INNOVATIVE LESSON TEMPLATE
Name of teacher : Akhila V V
Name of school : New Higher Secondary School
Subject : Mathematics
Unit : Similar triangles
Subunit : Similarity
Standard : 9
Division :B
Strength :46
Date :5/8/2015
Duration :40’
CONTENT ANALYSIS
Terms : Similarity
Facts : similarobjectshave same shape andcan have differentsize
Concept : conceptof similarity
Principle : similarobjectshave same shape and can have differentsize
Process : processof understandingsimilarity
Definition : Geometrical shapeshavingsame shape anddifferentsize are calledsimilar
figures.Thisobjective canbe termedassimilarity
Curricular Statement: Understanding the concept of similarity.

2. Class room interaction procedure Pupil response
Today we are goingto introduce a new methodforlearninganew idea.
Are you ready?
Can yousay some objectsfromyourclass room
What are theirspecialty
Is anyother specialty
Yes youare right.
I have a small ideainmy mind.Youhave to findoutmy idea.Forthat I will
showyousome right example andwrongexample.
NowI am goingto showtwofigures.Observe boththe figure clearly:
What isthis?
What istheirspeciality?
Is onlyone specialty.
Try to say more features
Yes I have sowedyoutwoanimalshavingdifferentshape ,size, color.This
was a wrongexample.
Yes
Blackboard,bench,desk,fan, tube
light, duster
Different shape ,
differentsize,different color
Two animals
Differentshape
Differentcolor
Differentsize

3. NowI am goingto showanothersetof figures.
What isthis?
What can you sayabout these temples
Yes verygood
I have showedyouobjects havingsame size,same shape.Thiswasa right
example.
AgainI am goingto showa rightexample.
What can you sayabout these figures
Model of twotemple
Theyare of same size,same shape
Both are rocketshaving same shape

4. What abouttheirsize
Both the objectsare of differentsize andhave same shape.
Can yousay whatwas my idea:
Yes youare partiallycorrect,saysome more correctly.
Mathematicallyobjectshavingsame shape anddifferentsizehave acommon
name.Can yousay?
Geometricshapeshavingsame shape anddifferentsizesare calledsimilar
figures.Thisobjective canbe termedassimilarity.
Nowcan you define whatissimilarity.
NowI am goingto give some more examples.Identify similaranddis-similar
one.
Theyare of differentsize
Objectshavingsame shape.
Objectshavingsame shape and
differentsize.
no

5. REVIEW:
What do youmeantby similarfigures

6. FOLLOWUP ACTIVITY:
Findout the similarfiguresfromyoursurroundings.