LESSON PLAN Name of the teacher : Deepu Krishnan R Name of the schoo l :Govt :H.S.S Punalur

Subject :Mathematics Standard : IX

Unit :Irrational numbers Strength :39

Sub unit : idea about irrational numbers Date :22/07/2014

Time :40 min

CURRICULAR STATEMENT :

The pupil understand problem and thereby in mathematics through discussion, observation and analyzing the prepared notes of the pupil

CONTENT ANALYSIS:

New terms : irrational numbers, approximate values

Facts : Integers and fractions are collectively called rational numbers

Concept : concept of irrational numbers

Process : Process of finding the approximate value of irrational numbers

CURRICULAR OBJECTIVES:

To find the approximate value of √2

LEARNING OUTCOMES:

The pupil

1. Will recall the tern square of a number2. Will identify a irrational numbers3. Explains the concept of irrational numbers

4. Ask questions to know more about irrational numbers5. Does oral and written calculation speed and accurately6. Be able to compare the rational numbers and irrational numbers7. Is able to frame problems related to irrational numbers8. Recognizes the qualities of exactness, accuracy while doing problems on

irrational numbers9. Plans to do problems on irrational numbers10.Generate new ideas on irrational numbers

PRE-REQUISITES:Pupils have knowledge on irrational numbersTEACHING-LEARNING RESOURCES:Usual classroom aids, chartLEARNING STRATEGIFS / APPROACHES:Meaningful verbal explanation, observing charts, observation, group discussion

Content/major concepts Classroom interaction procedure Expected response/evaluation

INTRODUCTION ACTIVITY-1

√2 is a irrational number

PRESENTATION ACTIVITY-2

√2(3 decimel) =1.414

√2(5decimal)

Teacher asks:What is meant by irrational numbers?What are its characteristics?

Through this idea teacher introduces the topic

Here we find the approximate value of √2.

We have seen that √2=1.4, 1.41, 1.4142..

The value of √2 is corrected to three decimal places is 1.414

Then value of √2 corrected to five decimal place is 1.41421

Pupil will respond

Pupil will listen

√2(4decimal)

Activity 3

√3=(1.73, 1.732, 1.7320...

√3(3decimal)=1.732

√3(4decimal)=1.7320

√3(5decimal)=1.73205

ClosureActivty 4

The value of √2 corrected to two decimal place is 1.41Then the value of √2 corrected to four decimal place is 1.4142

The teacher asked the student to find the different decimal place value of √3

√3=1.73, 1.732, 1.7320...

The value of √3correct to three decimal place is 1.732

The value of √3correct to four decimal place is 1.7320

Then the value of √3correct to five decimal place is 1.73205

Teacher explain steps to find the absalute value of the irrational nu,mber

Pupil will listen

Pupil will understand

Pupil will think and write

Pupil will listen

ReviewActivity 5

FOLLOWUP ACTIVITIES

pupil ask questions and clear the doubts

Find the value of

a) 2∕√2

b) 3∕√3

Pupil will do