1,040
edits
Changes
Jump to navigation
Jump to search
→Concept #6 Chord
Line 259:
Line 259:
'''DEFINITION:''' ''line joining any two points on the circumference''+===Learning objectives===
−*The students should understand that the chord is a line segment joining any two distinct points on the circle
−*The students should understand that the longest chord in any circle is its diameter.
*Explain the concept by drawing chords of different sizes.+*Make the students understand that the length of the chord increases as it moves closer to the centre and decreases as it moves away from the center.+'''Instructions to the teacher:'''
'''Instructions to the children:'''+
==Concept #6 Chord==
==Concept #6 Chord==
[[File:chord001.jpg|200px|right]]
[[File:chord001.jpg|200px|right]]
−===Learning objectives===
+# The students should understand that the chord is a line segment joining any two distinct points on the circle
+# The students should understand that the longest chord in any circle is its diameter.
+# Any number of chords can be drawn in a circle.
−===Notes for teachers===
===Notes for teachers===
−# Explain the concept by drawing chords of different sizes.
−# Make the students understand that the length of the chord increases as it moves closer to the centre and decreases as it moves away from the center.
−===Activity No # 1===
+===Activity No # Chord===
−Fold the cut-circular paper at different points. Draw folded lines with different coloured pencils and observe the length of chords.
+# Fold the cut-circular paper at different points. Draw folded lines with different coloured pencils and observe the length of chords.
{| 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 :'''20 minutes.
+*Estimated Time : 20 minutes.
−*'''Materials/ Resources needed'''
+*Materials/ Resources needed :Circles cut from white paper, colour pencils, scale.
−Circles cut from white paper, colour pencils, scale.
+*Prerequisites/Instructions, if any
−*'''Prerequisites/Instructions, if any'''
+# The students should have the knowledge of circle, diameter, circumference and line segment.
−The students should have the knowledge of circle, diameter, circumference and line segment.<br>
+Instructions to the teacher:
−Instruct the children to get cut circles ready:<br>
Instruct the children to get cut circles ready:<br>
−Instructions to the children:
−Fold the circle at different points and try to form the smallest and biggest chords.
+# Fold the circle at different points and try to form the smallest and biggest chords.
−*'''Multimedia resources:'''Geogebra
+*Multimedia resources:
*Website interactives/ links/ / Geogebra Applets
*Website interactives/ links/ / Geogebra Applets
−*'''Process/ Developmental Questions'''
+*Process/ Developmental Questions
−*'''Evaluation'''
+*Evaluation:
−Observe to see if the children are able to fold and mark the chord accurately.
+# Observe to see if the children are able to fold and mark the chord accurately.
−*'''Question Corner'''
+*Question Corner:
−Name the chord that passes through the center of the circle.<br>
+# Name the chord that passes through the center of the circle.
−What happens to the length of the chord as it moves away from the centre?
+# What happens to the length of the chord as it moves away from the centre?
===Activity No # 2 The longest chord passes through the centre of the circle===
===Activity No # 2 The longest chord passes through the centre of the circle===