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→Concept #3 CIRCUMFERENCE
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'''DEFINITION:'''
−''The bounding line of the circle is called circumference''
'''Instructions to the teachers'''<br>+'''Instructions for the students'''<br>+
[[File:circum.jpg|200px|right]]
[[File:circum.jpg|200px|right]]
−===Learning objectives===
===Learning objectives===
−The student needs to understand that the circumference is the outer boundary of a circle.
+# The students should understand that the circumference is the outer boundary of a circle.
+# It is equivalent to perimeter.
===Notes for teachers===
===Notes for teachers===
−Explain that every point on the circumference is at equidistant from the centre.
+# Explain that every point on the circumference is at equidistant from the centre.
===Activity No #1 ===
===Activity No #1 ===
{| style="height:10px; float:right; align:center;"
{| style="height:10px; float:right; align:center;"
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''[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.
−10 minutes.
+*Materials/ Resources needed: white paper, compass and colour pencils.
−*Materials/ Resources needed
−white paper , compass and colour pencils.
*Prerequisites/Instructions, if any
*Prerequisites/Instructions, if any
−The student should know to use the compass.<br>
+# The student should know to use the compass.
−The student should understand the circumference as outer boundary.
+# The student should understand the circumference as outer boundary which is defined.
+# A circle is drawn using radius as a measure.
*Multimedia resources
*Multimedia resources
Geogebra
Geogebra
*Website interactives/ links/ / Geogebra Applets
*Website interactives/ links/ / Geogebra Applets
*Process/ Developmental Questions
*Process/ Developmental Questions
−Instructions to the teachers
−Ask the children to draw circles.<br>
+# Ask the children to draw circles.<br>
−Instructions for the students
−Colour circumference by fitting small colour pencil in compass itself.
+# Colour circumference by fitting small colour pencil in compass itself.
−*'''Evaluation'''
+*Evaluation
Observe for the skill in using compass and drawing the circle.
Observe for the skill in using compass and drawing the circle.
−*'''Question Corner'''
+*Question Corner
−Is the distance between centre of the circle and its circumference constant ?<br>
+# Is the distance between the centre of the circle and its circumference constant ?
−What is the distance between the center of a circle and its circumference called?
+# What is the distance between the center of a circle and its circumference called?
==Concept #4 SEMICIRCLE==
==Concept #4 SEMICIRCLE==