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Line 309: − '''DEFINITION:''' part of a circumference of a circle − *The students should understand that an arc is a part of a circle included between two distinct points on the circumference of the circle.<br>+ − *The students should understand the two types of arcs -minor arc and major arc. The larger arc is called a major arc and the smaller one is called minor arc.+ − + − + − + Line 322:
Line 321: − + − + − − *'''Prerequisites/Instructions, if any''' − − '''Instructions to the teacher:'''<br> − + − + − '''Instructions to the students:'''<br>+ + + − + − + − + − + − + − −
→Concept #7 ARC
==Concept #7 ARC==
==Concept #7 ARC==
[[File:arc.jpg|200px|right]]
[[File:arc.jpg|200px|right]]
===Learning objectives===
===Learning objectives===
# The students learn that an arc is a part of a circle included between two distinct points on the circumference of the circle.
# The students learn that the the larger arc is called major arc and the smaller one is called minor arc.
===Notes for teachers===
===Notes for teachers===
Explain the concept of arc by drawing a circle and two points on its circumference. The part of the circumference within the two points in either directions are called its arcs. Show the labelling of arcs.
# Explain the concept of arc by drawing a circle and two points on its circumference. The part of the circumference within the two points in either directions are called its arcs.
===Activity No # 1===
# Show the labelling of arcs.
===Activity No # Arc===
{| style="height:10px; float:right; align:center;"
{| style="height:10px; float:right; align:center;"
''[http://www.karnatakaeducation.org.in/?q=node/305 Click to Comment]''</div>
''[http://www.karnatakaeducation.org.in/?q=node/305 Click to Comment]''</div>
|}
|}
*'''Estimated Time''' :
*Estimated Time : 10 minutes
*Materials/ Resources needed
*Materials/ Resources needed : White paper, pencil, compass, scale and colour pencils.
*Prerequisites/Instructions, if any
# The students should know to draw a circle using compass.
# They should know that arc is part of the circumference.
Instructions to the teacher:<br>
Instructions to the students:<br>
*Multimedia resources
*Multimedia resources
*Website interactives/ links/ / Geogebra Applets
*Website interactives/ links/ / Geogebra Applets
*Process/ Developmental Questions
*'''Process/ Developmental Questions'''
*Evaluation
*'''Evaluation'''
*Question Corner:
# What is the longest arc of a circle called?<br>
*'''Question Corner'''
# What are the arcs called when both major and minor arcs are of same size?
What is the longest arc of a circle which forms the circle called?<br>
What are the arcs called when both major and minor arcs are of same size?<br>
===Activity No # ===
===Activity No # ===