View source for Sector of a circle


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= Concept Map =
<mm>[[CIRCLES BASIC TERMS..mm|Flash]]</mm>>
__FORCETOC__

= Textbook =
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=Additional Information=
==Useful websites==
==Reference Books==

= Teaching Outlines =

==Concept #1 CIRCLE CENTRE==
===Learning objectives===
#Define circle
#give examples for circles
#Locate centre for the given circle.

===Notes for teachers===
Define circle and centre with the help of a diagram

===Activity No # 1 To locate centres for circles ===
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|<div style="width:150px;border:none; border-radius:10px;box-shadow: 5px 5px 5px #888888; background:#f5f5f5; vertical-align:top; text-align:center; padding:5px;">
''[http://www.karnatakaeducation.org.in/?q=node/305 Click to Comment]''</div>
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*Estimated Time
20 minutes
*Materials/ Resources needed
For the teacher: chalk piece, geometry set.<br>
for the student: paper
*Prerequisites/Instructions, if any
''Instructions for the teacher:'' Draw few circles of different radii and name the centres <br>
''Instructions for the student'' : name the centres of different circles
*Multimedia resources
*Website interactives/ links/ / Geogebra Applets
*Process/ Developmental Questions
Identify the centre.
*Evaluation
#How many centres does a circle has?<br>
#Where does the centre of the circle lie? (inside/outside)
*Question Corner
Is there a circle with 3/4/5 centres?

===Activity No # 2 ===
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|<div style="width:150px;border:none; border-radius:10px;box-shadow: 5px 5px 5px #888888; background:#f5f5f5; vertical-align:top; text-align:center; padding:5px;">
''[http://www.karnatakaeducation.org.in/?q=node/305 Click to Comment]''</div>
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*Estimated Time
*Materials/ Resources needed
*Prerequisites/Instructions, if any
*Multimedia resources
*Website interactives/ links/ / Geogebra Applets
*Process/ Developmental Questions
*Evaluation
*Question Corner

==Concept #2 diameter==
===Learning objectives===
to draw circle<br>
to draw a diamter
use of  geometrical instruments
===Notes for teachers===
explain the  concepts using requisite diagrams. Conduct this activity.
===Activity No #1 ===
{| style="height:10px; float:right; align:center;"
|<div style="width:150px;border:none; border-radius:10px;box-shadow: 5px 5px 5px #888888; background:#f5f5f5; vertical-align:top; text-align:center; padding:5px;">
''[http://www.karnatakaeducation.org.in/?q=node/305 Click to Comment]''</div>
|}
*Estimated Time
20 minutes
*Materials/ Resources needed
different coloured circular cutouts
*Prerequisites/Instructions, if any <br>
#The student should have knowledge of circles.
#The student should have skill of paper folding
*Multimedia resources
*Website interactives/ links/ / Geogebra Applets
*Process/ Developmental Questions
''instructions to the teacher:''<br>
		The teacher distributes the paper cut outs to all the students.<br>
		Ask every student to make 2 equal parts by folding.<br>
		What happens if it is folded again to get equal parts?<br>
		Ask the students to identify the folded lines/marks<br>
			

''instructions to the student:''<br>
		fold the paper cut out as per instructions<br>
		observe and mark the folded line.<br>
		Identity the diameter and radius.<br>
*Evaluation
#Was the student successful in marking radius and diamter?<br>
#Was the student successful in folding and marking?<br>
#Was the student able to relate radius and diameter.<br>
*Question Corner
how many such radii and diameters can be drawn to a given circle?

===Activity No # ===
{| style="height:10px; float:right; align:center;"
|<div style="width:150px;border:none; border-radius:10px;box-shadow: 5px 5px 5px #888888; background:#f5f5f5; vertical-align:top; text-align:center; padding:5px;">
''[http://www.karnatakaeducation.org.in/?q=node/305 Click to Comment]''</div>
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*Estimated Time
*Materials/ Resources needed
*Prerequisites/Instructions, if any
*Multimedia resources
*Website interactives/ links/ / Geogebra Applets
*Process/ Developmental Questions
*Evaluation
*Question Corner


==Concept #3 CIRCUMFERENCE==
===Learning objectives===
The student needs to understand that the circumference is the outer boundary of a circle.
===Notes for teachers===
Explain that every point on the circumference is at equidistant from the centre.
===Activity No #1 ===
{| style="height:10px; float:right; align:center;"
|<div style="width:150px;border:none; border-radius:10px;box-shadow: 5px 5px 5px #888888; background:#f5f5f5; vertical-align:top; text-align:center; padding:5px;">
''[http://www.karnatakaeducation.org.in/?q=node/305 Click to Comment]''</div>
|}
*Estimated Time
10 minutes.
*Materials/ Resources needed
white paper , compass and colour pencils.
*Prerequisites/Instructions, if any
*Multimedia resources
*Website interactives/ links/ / Geogebra Applets
*Process/ Developmental Questions
*Evaluation
*Question Corner

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