1. The document provides details of a lesson plan to teach students about the concept of arc length of a circle. It includes preliminaries such as the topic, objectives, resources needed and procedures. 2. The content analysis section defines key terms like radius, circumference, arc, and introduces formulas for calculating arc length. Examples and activities are outlined to help students understand the peculiarities of circles. 3. Students will learn to recall information about circles, describe circle features, interpret the concept of arc length, and use the formula to find arc lengths in different situations. Assessment questions are provided to check understanding.

1. LESSON TEMPLATE
PRELIMINARY DETAILS
Name of the Teacher : Jincy John STD : IX
Name of the Subject : KWn-X-imkv{Xw STR :
Name of the Unit : hr¯-§-fpsS Af-hp-IÄ Date :
Name of the Topic : Nm]-¯nsâ ofw Duration : 45 mins
CURRICULAR STATEMENT
Nm]-¯nsâ ofw F¶Xv a-Ên-em-¡p¶p

2. CONTENT ANALYSIS
Symbol : r  hr¯-¯nsâ Bcw
  ss] ( = 3.14)
Term : Nm]-¯nsâ ofw, Nm]-¯nsâ tI{μ-tIm¬
Facts : 1. hymkw hr¯s¯ c−v AÀ°-hr-¯-§-fm-¡p¶p
2. Hcp hr¯-¯nse Bc-§-sfÃmw Xpey-amWv
3. hr¯-¯nse GXv RmWpw hr¯s¯ c−v Nm]-§-fm-¡p¶p
4. Hcp hr¯-¯nsâ tI{μ-tIm¬ 360
0
BWv.
Concepts : hr¯-¯nsâ Nm]-ofw F¶ Bibw
Definition : Nm]-¯nsâ B{K-_n-μp-¡sf tI{μ-hp-ambn tbmPn-¸n-¨m In«p¶ tImWns tI{μ-tIm¬
F¶p ]d-bp¶p.
hr¯-¯nse A{K-_n-μp-¡sf tbmPn-¸n-¡p¶ tcJsb RmsW¶p ]d-bp-¶p.
Formula : tI{μ-tIm¬ x
0
Bb Nm]-¯nsâ ofw = x 2
360
x
r

3. LEARNING OUTCOME
The student will able to,
 recall the information about circle
 describe the peculiarities of circle
 interpret the concept are of a circle
 summarise the concept length of arc of a circle.
 use the concept in other familiar situations
 finding the length of are within the situation
 judge the appropriateness of above concept in a given problem
 plan new ideas based on the concept.
PRE-REQUISITES
Ip«n-IÄ¡v hr¯w, Bcw, hymkw, Rm¬, tI{μ-tIm¬ F¶n-h-sb-¸-än-bpÅ Adnhv

4.
TEACHING – LEARNING RESOURCES
NmÀ«v : Nm]-¯nsâ ofw Is−-¯m-pÅ kq{X-hmIyw Fgp-Xnb NmÀ«v
amXrI : Nm]-¯nsâ amXrI
{]iv-ImÀUp-IÄ : Nm]-¯n-sâ of-hp-ambn _Ô-s¸« {]iv-§Ä AS-§nb {]iv-ImÀUp-IÄ
Reference : 9þmw ¢mÊnse ]mT-]p-kvXIw

5. CLASSROOM INTERACTION PROCEDURE EXPECTED PUPIL RESPONSE
Introduction
Fsâ AbÂho-«n Hcp Ipªp-hm-h-bp-−v. Ahv `£Ww Ign-¡m³
aSnbm-Wv. C¶se cm{Xn Ahv Ahsâ A½ tNmdv sImSp-¡m³ F{X
{ian-s¨¦nepw Ah³ Ign-¨n-Ã. C¶se à nem-hpÅ cm{Xn Bbn-cp-¶p.
A§-s-bpÅ BImiw ImWm³ Ã `wKn-b-tÃ. Fs´m-s¡-bm-bn-cp¶p
BIm-is¯ C{X atm-l-c-am¡nbsX¶v n§Ä¡-dn-bmtam? A§s
]qÀ®-N-{μs ImWn-¨p-sIm−pw £-{X-§sf ImWn-¨p-sIm−pw A½
Ahs tNmdp Ign-¸n-¨p. n§Ä¡v ]m«p-]m-Sm³ Adn-bmtam? N{μs
]än Adn-bm-hp¶ ]m«v n§Ä¡-cn-bmtam? Hcp-Zm-l-c-W-¯n-v Rm³ Hcp
]m«nsâ c−p-hcn sNmÃmw.
A¼n-fn-b-½mhm Xma-c-¡p-¼n-fn-se-´p−v
Ip¼n-«n-cn-¸mtWm am-¯vþ
sIm¼-m--¸p-d¯v
CXp-t]mse ck-I-c-am-bh n§Ä¡v Is−-¯mtam?
]qÀ®-N-{μsâ BIrXn F´mWv ?
CXp-t]mse CtX BIr-Xn-bn-epÅ Fs´Ãmw cq]-§-sf-¸än n§Ä¡-
dnbmw ?
hr¯w F¶-Xnv n§Ä¡v Hcp nÀÆ-Nw ]d-bmtam ?
hr¯-¯nsâ Bchpw hymkhpw X½n-epÅ _Ô-sa´v?
hr¯w-
hf, ]¸Sw
Bc-¯nsâ Cc-«n-bmWv hymkw

6. CLASSROOM INTERACTION PROCEDURE EXPECTED PUPIL RESPONSE
Presentation
Ip«n-Isf {Kq¸p-I-fmbn Xncn-¡p-¶p.
Activity – I
Hmtcm {Kq¸npw hr¯-am-XrI ÂIp-¶p. XpSÀ¶v hr¯-¯nse hymkw
hc-bv¡m³ Bh-iy-s¸-Sp-¶p. AXn-p-tijw Nph-sS-bpÅ tNmZy-§Ä
hrà-am-¡m³ Bh-iy-s¸-Sp-¶p.
1. hymkw hr¯s¯ F{X `mK-§-fmbn hn`-Pn-¡p¶p?
2. Ah-bpsS {]tXy-IX F´v?
3. hr¯-¯nsâ hymk-¯nsâ A{K-_n-μp-¡Ä hr¯-¯nsâ atä-sX-¦nepw
_nμp-hp-ambn tbmPn-¸n-¡p-t¼mÄ In«p¶ tIm¬ Af-s¶-Sp-¡p-I.
Activity – II
XpSÀ¶v {]iv-§Ä AS-§nb {]iv-ImÀUp-IÄ Hmtcm {Kq¸npw
ÂIp-¶p.
2
Ah Xpey-am-bn-cn¡pw

7. CLASSROOM INTERACTION PROCEDURE EXPECTED PUPIL RESPONSE
1. n§-fpsS hr¯-¯nsâ hymkw GXv?
2. hr¯-¯nsâ Nm]w F¶m-se´v?
3. Nm]-¯nsâ tI{μ-tIm¬ F¶m-se´v?
Activity – III
A[ym-]nI : FÃm-hcpw Ct§m«p {i²nt¨
CsX-´mWv?
A[ym-]nI : hr¯-¯nsâ Bcw F{X-bmWv?
A[ym-]nI : F¦n ‘r’ Bc-amb hr¯-¯nsâ Npä-fhv F{X-bmWv?
A[ym-]nI : Hcp hr¯-¯nsâ BsI tIm¬ F{X?
hr¯w
r
2r
360
0
r

8. CLASSROOM INTERACTION PROCEDURE EXPECTED PUPIL RESPONSE
A[ym-]nI : F¦n Rmo hr¯s¯ 360
0
Xpey-`m-K-§-fm-¡n-bm 1
0
tI{μ-tIm-WpÅ Nm]-¯nsâ ofw F{X?
A[ym-]nI : 3
0
tI{μ-tIm-WpÅ Nm]-¯nsâ of-sa{X?
A[ym-]nI : A§-s-sb-¦n Cu Nn{Xw tm¡q
CXn tcJ-s¸-Sp-¯n-bn-cn-¡p¶ tI{μ-tIm¬ F{X-bmWv?
F¦n x
0
tI{μ-tIm-WpÅ Nm]-¯nsâ ofw F{X-bmWv?
1
x 2 r
360

3
x 2 r
360

x
0
0
x 2 r
360
x

r
x
0

9. CLASSROOM INTERACTION PROCEDURE EXPECTED PUPIL RESPONSE
XpSÀ¶pÅ NÀ¨-I-fn-eq-sSbpw hni-Zo-I-c-W-§-fn-eq-sSbpw x
0
tI{μ-
tIm-WpÅ Nm]-¯nsâ ofw
0
x 2 r
360
x
 F¶p Ip«n-IÄ A[ym-]n-I-
bpsS klm-b-t¯msS Is−-¯p-¶p. XpSÀ¶v NmÀ«v {]ZÀin-¸n-¡p-¶p.
Nm]-¯nsâ ofw
Nm]-¯nsâ ofw =
0
x 2 r
360
x

x tI{μ-tIm¬
x hr¯-¯n-sâ Bcw
Ip«n-IÄ {i²-tbmsS hmbn-¡p-¶p.

10. APPLICATION/REVIEW
Nph-sS-bpÅ {]iv-§Ä AS-§nb {]iv-ImÀUp-IÄ Hmtcm {Kq¸npw ÂIp-¶p.
a. Nn{X-¯nse hr¯-¯nsâ Bcw F{X?
b. hr¯-¯nse tI{μ-tIm¬ F{X?
c. Nm]-¯nsâ ofw ImWpI?
FOLLOWUP ACTIVITY
1. hr¯-¯nsâ hymkw 16 sk.-ao, Nm]-¯nsâ ofw 2bpw Bbm tI{μ-tIm¬ Is−-¯pI
2. 25 cm
2
]c-¸-f-hpÅ hr¯-¯nsâ Nm]-¯nsâ tI{μ-tIm¬ 35
0
BWv. F¦n Nm]-ofw ImWp-I.
10 cm
36
0