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Balance (The Farmer's Stone)
Author:
Eduardo Neto
,
John Ulbright
Based upon a wonderful Car Talk Puzzler - http://www.cartalk.com/puzzler/farmers-stone
GeoGebra
New Resources
Slope Field (1)
History of Maths
Rotating Points (Optical Illusion)
"Compressed" Astroid as Envelope
Ellipse as Envelope - Correspondence Method
Discover Resources
The Triangle and its Inscribed and Circumscribed Circles
Triangle SAW
Vending Machines M and N
Ch. 6 Problem Solving
Angles in Circles
Discover Topics
Power Functions
Hypothesis Testing
Quadratic Equations
Cone
Parabola