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→Activity No # 3. Circle of varying radius using Geogebra
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#Review the terms plane closed figures, circle and radius.+#Show them how to measure radius on the compass
−#Show them to draw a circle.
−#Project the geogebra and let them view the changing size of the circle with changing radius.
*Process:
*Process:
−Show the geogebra file and ask the following questions.
−*Developmental Questions:
*Developmental Questions:
# What is a circle ?
# What is a circle ?
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# What is the radius of this circle ?
# What is the radius of this circle ?
# How do you name the radius ?
# How do you name the radius ?
−*Evaluation:
*Evaluation:
#By what parameter is the size of a circle defined ?
#By what parameter is the size of a circle defined ?
#Bigger the radius, _____________ is the size of the circle.
#Bigger the radius, _____________ is the size of the circle.
−*Question Corner:
*Question Corner:
# How do you name a circle ?
# How do you name a circle ?