Difference between revisions of "Chord length and distance for centre of the circle"

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===Name of the activity===
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===Objectives===
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Brief blurb describing what the activity.  If this has been borrowed from some external web site (for example, a non OER or OER site which had this idea and based on which the activity was developed)
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Understand the relation between chord length and distance from the center
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=== Objectives ===
 
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Content objectives  - what content areas
 
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Skill objectives - what specific skills
 
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Classroom objectives - to demo peer learning, to make a classroom resource, etc -
 
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All these kinds of objectives need not be there for every activity.  And no need to list them as different headings.  This is only for our reference when we are developing activities.
 
  
 
===Estimated Time===
 
===Estimated Time===
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30 minutes
  
 
=== Prerequisites/Instructions, prior preparations, if any ===
 
=== Prerequisites/Instructions, prior preparations, if any ===
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Prior knowledge of point, lines, angles, polygons
  
 
===Materials/ Resources needed===
 
===Materials/ Resources needed===
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* Digital : Computer, geogebra application, projector.
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* Non digital : Worksheet and pencil, compass, strings
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* Geogebra files :  Chord length and perpendicular distance.ggb
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===Process (How to do the activity)===
 
===Process (How to do the activity)===
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How to do the different steps of the activity?
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* For a chord in a circle construct a perpendicular through the center of the circle.
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* Move chord closer to center of the circle, note the perpendicular distance in the worksheet.
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What kinds of questions you can ask for that activity
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* What can you notice between chord length and perpendicular distance? When is the perpendicular distance equal to zero?
  
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What are the student follow-up activities/ questions you can give?
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{| class="wikitable"
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|Observation
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|Chord 1
  
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Categories:  (Subject) (Topic) (Sub-concept/topic) (Class 6) (Resource format)
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Length
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|Distance from centre
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|Chord 2
  
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Example - (Mathematics) (Triangle) (Area) (Perimeter) (Class 6) (Class 8) (Geogebra) (Video)
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Length
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|Distance from centre
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Revision as of 10:43, 7 May 2019

Objectives

Understand the relation between chord length and distance from the center

Estimated Time

30 minutes

Prerequisites/Instructions, prior preparations, if any

Prior knowledge of point, lines, angles, polygons

Materials/ Resources needed

  • Digital : Computer, geogebra application, projector.
  • Non digital : Worksheet and pencil, compass, strings
  • Geogebra files : Chord length and perpendicular distance.ggb

Process (How to do the activity)

  • For a chord in a circle construct a perpendicular through the center of the circle.
  • Move chord closer to center of the circle, note the perpendicular distance in the worksheet.
  • What can you notice between chord length and perpendicular distance? When is the perpendicular distance equal to zero?
Observation Chord 1

Length

Distance from centre Chord 2

Length

Distance from centre
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