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→Concept #4
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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==
+==Concept #4 SEMICIRCLE==
−===Learning objectives===
+==='''Learning objectives'''===
−===Notes for teachers===
+* The student should be able to understand that a diameter divides the circle into two equal halves and each such half is a semicircle or hemicircle.<br>
−===Activity No # ===
+* The student learns how to form a semicircle by joining any two points on the circumference through its centre .
+==='''Notes for teachers'''===
+Show children the forming of semicircle by drawing diameter.
+==='''Activity No # 1'''===
+Bring cut circles of different sizes, fold them into exact halves and help them recognise semicircles. Let them colour each half with different colour.<br>
+'''Sub units of activities:'''<br>
+This is a classroom individual activity.<br>
+'''Materials:'''
+White paper, crayons.
{| style="height:10px; float:right; align:center;"
{| 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;">
|<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>
''[http://www.karnatakaeducation.org.in/?q=node/305 Click to Comment]''</div>
|}
|}
−*Estimated Time
+*'''Estimated Time'''
−*Materials/ Resources needed
+15 minutes.
−*Prerequisites/Instructions, if any
+*'''Materials/ Resources needed'''
−*Multimedia resources
+White paper, crayons.
+*'''Prerequisites/Instructions, if any'''
+The students should have prior knowledge of circle and diameter.
+*'''Multimedia resources'''
+Geogebra
*Website interactives/ links/ / Geogebra Applets
*Website interactives/ links/ / Geogebra Applets
−*Process/ Developmental Questions
+*'''Process/ Developmental Questions'''
−*Evaluation
+'''Instructions to the teacher:'''
−*Question Corner
+Ask children the previous day to cut circles of given radius and bring.
+'''Instructions to the students:'''
+Instruct them to fold circle into exact half. Draw diameter on folded line and colour each half with different colour.
+*'''Evaluation'''
+Were the students able to draw and cut perfect circles?<br>
+Was the folded line (diameter) passing through the center of circle?<br>
+*'''Question Corner'''
+In how many different ways can you draw semicircles for a given circle?
===Activity No # ===
===Activity No # ===