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The Art of Problem Posing
Author:
Steve Phelps
"What if each attribute were not so; what could it be then?"
Brown & Walter, 2005
https://www.amazon.com/Art-Problem-Posing-Stephen-Brown/dp/0805849777
New Resources
Rose Curve - A Classical Construction
Construct a Square
Witch of Agnesi - A Classical Construction
Slope Field (1)
Angles and Intersecting Lines: Quick Investigation
Discover Resources
Langford's Problem
Animation 141
Row, Column, and Matrix Views
เรือเล็กควรออกจากฝั่ง
Guess the Incenter!
Discover Topics
Cone
Symmetry
Median Value
Rectangle
Tangent Function