Area of Circles

Explore the formula for the area of a circle, by cutting it into sectors and rearranging the sectors to form a figure close to a parallelogram. By increasing the no. of sectors, students observe that the figure tends to a rectangle and get the formula for the area of the circle by finding the area of this rectangle. See also how I design the applets in http://www.geogebratube.org/material/show/id/15215. 　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　Anthony Or. GeoGebra Institute of Hong Kong. 　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　orchiming@gmail.com （繁體中文版：http://www.geogebratube.org/material/show/id/550）
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Anthony OR 柯志明 —

 
Materialetype
Arbejdsark
Tags
area  circle  circumference  exploration  perimeter  pi 
Målgruppe (alder)
11 – 14
Sprog
English (United Kingdom)
 
 
Visninger
592655
Kontakt forfatteren til ressourcen
Licens
CC-BY-SA, GeoGebra Terms of Use
Variationer af materialet
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Vis mere…
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Area of Circles
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Area of Circles
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Delt af Ισίδωρος Γλαβάς
Copy of Area of Circles
Delt af singmuang
Copy of Area of Circles
Delt af Joseph Kim
Copy of (original) Area of Circles
Delt af Joseph Kim
Copy of Area of Circles
Delt af Irina Vasilescu
Copy of Area of Circles
Delt af Meghan Averill
Explore the Area of a Circle
Delt af Anthony OR 柯志明
Flächeninhalt eines Kreises
Delt af Barbara Lichtenegger
Area of Circles
Delt af Bianca
Área do Círculo
Delt af Aline Lemmertz
Observe a fórmula do comprimento da circunferência.
Delt af Aline Lemmertz
Area of Circles
Delt af Ισίδωρος Γλαβάς
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Delt af Jens L. Lassen
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Delt af Laura Santos
Àrea d'un cercle
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Area of a Circle
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Unavngiven Applet
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Area of Circles
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Area of Circles
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Dairenin Alanını Keşfet
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Unavngiven Applet
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Area of Circles
Delt af Ruth Myhre Jørgensen
Površina kruga
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Area of Circles
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Area of Circles
Delt af Lua Shixiong
Unavngiven Applet
Delt af Lua Shixiong
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Delt af Reima Halmetoja
Area of Circles
Delt af Gautam Kamble
Area of Circles
Delt af Raphael Chan
By exploring the activity below you can find the formula of the area of a circle.
Delt af Aleyda Medina
Area of Circles
Delt af Jefferson Huera
Keliling dan Luas Lingkaran
Delt af etik
Cirkel area som rektangel
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Area of Circles
Delt af anishkumar741
Area of Circles
Delt af Jhuliene Seger
Area of Circles
Delt af Ranjana Singh
Unavngiven Applet
Delt af Misty Koenig
Area of Circles
Delt af Sunu John
Area of Circles
Delt af Mr. Kellett
Area of Circles
Delt af Sandra Krauze
Copy of Area of Circles
Delt af Sonya White
Area of Circles
Delt af Jacob Orner
Area of Circles
Delt af Jack Lin
Area of Circle as Parallelogram
Delt af Gregory Belostotski
Area of Circles
Delt af Hurták Éva
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Delt af emvau
Unavngiven Applet
Delt af David Kessler
Area of Circles - A- Ms Lina
Delt af lina7
Demo - Area of Circles
Delt af Richard
Unavngiven Applet
Delt af Monika Musilek
Area of Circles by Anthony Or with questions added
Delt af Tracey Weise
Area of Circles
Delt af Daniela Leone
Area of Circles
Delt af Steve Phelps
Unavngiven Applet
Delt af Martin
Area of Circles
Delt af Martin
Cópia de Area of Circles
Delt af JOSÉ ANTÔNIO DA SILVA ANDRADE
Área de un círculo
Delt af Ruben González Míguez
Area of Circles
Delt af Bijay Balal
Area of Circles
Delt af Fabian Loth
Copy of Area of Circles
Delt af Math Isip
Area of Circles
Delt af v_hofmann
Unavngiven Applet
Delt af Kika Georgiou
 

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