Difference between revisions of "Circle as a shape"
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− | + | ===Objectives=== | |
− | + | Introducing circle as a shape | |
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− | === Objectives === | ||
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===Estimated Time=== | ===Estimated Time=== | ||
+ | 30 minutes | ||
=== Prerequisites/Instructions, prior preparations, if any === | === Prerequisites/Instructions, prior preparations, if any === | ||
+ | Prior knowledge of point, lines, angles, polygons | ||
===Materials/ Resources needed=== | ===Materials/ Resources needed=== | ||
+ | * Digital : Computer, geogebra application, projector. | ||
+ | * Non digital : Worksheet and pencil | ||
+ | * Geogebra files : Introduction to circles.ggb | ||
+ | |||
===Process (How to do the activity)=== | ===Process (How to do the activity)=== | ||
− | + | * Draw circle with ‘circle with center and point’ or use the slider | |
− | + | * What do you notice, how is the circle formed. | |
− | What | + | * Which point is the centre of the circle ? |
− | + | * Plotting points on the circle, connect these points to the centre of the circle. | |
− | + | * What can you say about the segment lengths? | |
− | + | * Measure the segment lengths to show they are equal. | |
− | + | * Establish center of the circle’ and ‘radius’ | |
+ | * Differentiate between circle and region enclosed by a circle. | ||
− | + | * '''Evaluation:''' | |
+ | # By what parameter is the size of a circle defined ? | ||
+ | # Bigger the radius, _____________ | ||
+ | # How do you name a circle ? | ||
+ | # Can you draw a circle without knowing the radius ? |
Revision as of 10:41, 7 May 2019
Objectives
Introducing circle as a shape
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
- Geogebra files : Introduction to circles.ggb
Process (How to do the activity)
- Draw circle with ‘circle with center and point’ or use the slider
- What do you notice, how is the circle formed.
- Which point is the centre of the circle ?
- Plotting points on the circle, connect these points to the centre of the circle.
- What can you say about the segment lengths?
- Measure the segment lengths to show they are equal.
- Establish center of the circle’ and ‘radius’
- Differentiate between circle and region enclosed by a circle.
- Evaluation:
- By what parameter is the size of a circle defined ?
- Bigger the radius, _____________
- How do you name a circle ?
- Can you draw a circle without knowing the radius ?