Changes
From Karnataka Open Educational Resources
1,186 bytes added
, 13:15, 3 September 2013
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| Are the students standing on the circumference of the circle considered to be in the interior or in the exterior ? Justify. | | Are the students standing on the circumference of the circle considered to be in the interior or in the exterior ? Justify. |
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− | ==Concept #6== | + | ==Concept #6 Chord== |
| ===Learning objectives=== | | ===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. |
| ===Notes for teachers=== | | ===Notes for teachers=== |
− | ===Activity No # === | + | *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=== |
| + | 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 | + | *'''Estimated Time :'''20 minutes. |
− | *Materials/ Resources needed | + | *'''Materials/ Resources needed''' |
− | *Prerequisites/Instructions, if any | + | Circles cut from white paper, colour pencils, scale. |
− | *Multimedia resources | + | *'''Prerequisites/Instructions, if any''' |
| + | 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> |
| + | '''Instructions to the children:''' |
| + | Fold the circle at different points and try to form the smallest and biggest chords. |
| + | *'''Multimedia resources:'''Geogebra |
| *Website interactives/ links/ / Geogebra Applets | | *Website interactives/ links/ / Geogebra Applets |
− | *Process/ Developmental Questions | + | *'''Process/ Developmental Questions''' |
− | *Evaluation | + | *'''Evaluation''' |
− | *Question Corner | + | Observe to see if the children are able to fold and mark the chord accurately. |
| + | *'''Question Corner''' |
| + | Name the chord that passes through the center of the circle.<br> |
| + | What happens to the length of the chord as it moves away from the centre? |
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| ===Activity No # === | | ===Activity No # === |
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| *Evaluation | | *Evaluation |
| *Question Corner | | *Question Corner |
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| ==Concept #7== | | ==Concept #7== |