327
edits
Changes
From Karnataka Open Educational Resources
no edit summary
A circle is the set of all points in the plane that are a fixed distance from a fixed point.
=== Objectives ===
===Objectives===
Understanding circle as a shape
===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 : [https://ggbm.at/gfhrfrrc Introduction to circles.ggb]
{{Geogebra|gfhrfrrc}}
===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 kinds of questions you can ask for that activity
* 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 ?
=== Worksheet ===
[[:File:Circles-introduction Worksheet.pdf]]
[[Category:Circles]]
