Difference between revisions of "Radius and diameter of a circle"

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(Created page with "===Name of the activity=== 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...")
 
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===Name of the activity===
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[[File:rad_dia.jpg|200px|right|link=http://karnatakaeducation.org.in/KOER/en/index.php/File:Rad_dia.jpg]]Marking radius and diameter
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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)
 
  
 
=== Objectives ===
 
=== Objectives ===
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Content objectives  - what content areas
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#Radius is a straight line joining centre of a circle to any point on the circumference.
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#Ability to learn the use of compass.
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Skill objectives - what specific skills
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#Skill of drawing the circle accurately.
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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.
 
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===Estimated Time===
 
===Estimated Time===
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20 minutes
  
 
=== Prerequisites/Instructions, prior preparations, if any ===
 
=== Prerequisites/Instructions, prior preparations, if any ===
  
 
===Materials/ Resources needed===
 
===Materials/ Resources needed===
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Different coloured papers, compass, scale, pencil and scissors.
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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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What kinds of questions you can ask for that activity
 
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What are the student follow-up activities/ questions you can give?
 
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Categories:  (Subject) (Topic) (Sub-concept/topic) (Class 6) (Resource format)
 
  
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Example -  (Mathematics) (Triangle) (Area) (Perimeter) (Class 6) (Class 8) (Geogebra) (Video)
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Instructions to the teacher:
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#The teacher distributes the paper to the students.
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#Shows them how to use compass and draw a circle.
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#Ask every student to make 2 equal parts by folding.
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#What happens if it is folded again to get equal parts?
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#Ask the students to identify the folded lines/marks
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Instructions to the student:
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#Draw a circle of given radius.
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#Cut out the circle.
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#Fold the circle into two equal halves.
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#Again fold into further equal halves.
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#Observe and mark the folded line.
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#Identity the diameter and radius.
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*Evaluation
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#Was the student successful in marking radius and diameter?
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#Was the student successful in folding and marking?
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#Was the student able to relate radius and diameter.
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*Question Corner
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#How many such radii and diameters can be drawn to a given circle?

Revision as of 11:23, 7 May 2019

Rad dia.jpg

Marking radius and diameter

Objectives

  1. Radius is a straight line joining centre of a circle to any point on the circumference.
  2. Ability to learn the use of compass.
  3. Skill of drawing the circle accurately.

Estimated Time

20 minutes

Prerequisites/Instructions, prior preparations, if any

Materials/ Resources needed

Different coloured papers, compass, scale, pencil and scissors.

Process (How to do the activity)

Instructions to the teacher:

  1. The teacher distributes the paper to the students.
  2. Shows them how to use compass and draw a circle.
  3. Ask every student to make 2 equal parts by folding.
  4. What happens if it is folded again to get equal parts?
  5. Ask the students to identify the folded lines/marks

Instructions to the student:

  1. Draw a circle of given radius.
  2. Cut out the circle.
  3. Fold the circle into two equal halves.
  4. Again fold into further equal halves.
  5. Observe and mark the folded line.
  6. Identity the diameter and radius.
  • Evaluation
  1. Was the student successful in marking radius and diameter?
  2. Was the student successful in folding and marking?
  3. Was the student able to relate radius and diameter.
  • Question Corner
  1. How many such radii and diameters can be drawn to a given circle?
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