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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
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Basic and Compound Inequality Illustrator
Squaring a Rectangle (PST Version)
Writing and Graphing Proportional Relationships (k>0)
Marion's Theorem
Angle Addition Postulate (V2) - Integer Solutions
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Copy An Angle
Differentiation from first principles
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