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Featured Resources

Equivalent Ratios

Duane Habecker
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Poorly Drawn Quadrilaterals

Steve Phelps
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Convex quadrilaterals

Paulo Correia
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Gauss-Jordan 2x2 Elimination

Auston B Cron
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Angle Estimation Warmup

Andrew Knauft
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Number Pyramids

Jennifer Silverman
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Graph the Line

Steve Phelps
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Flip Flop

John Golden
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Guess My Rule (2013)

John Golden
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5-Piece Puzzle

Duane Habecker
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right triangle paradox

sonom
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SSA triangle: The Ambiguous Case

talljerome
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Least Squares

timteachesmath
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AQR Section 17: Mean but Sensitive

Steve Phelps
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AQR Section 17: Where's the Mean?

Steve Phelps
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Secant Slope Calculator

Jake Binnema
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Growth of Facebook.com

Roy Wright
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Lower and Upper Sum of a Function

GeoGebra Materials Team
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One-Son Policy Simulation

Steve Phelps
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Analog Clock

Duane Habecker
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Pendulum Wave Machine (Simulation)

Michael Borcherds
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05.1 Measures of Central Tendency

sonom
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Hilbert curve

Thijs
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Spirograph-Epitrochoid Earth and Moon

Bill Lombard
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Inclined Plane with Two Masses and a …

Tom Walsh
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The Relationship Between Human Height…

Roy Wright
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Kaleidoscope

Michael Borcherds
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Rotating a Triangle Around a Coordina…

Steve Phelps
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Area of a Circle - Wedge/Sector Demon…

Linda Fahlberg-Stojanovska
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Triangle Paradox (Missing square puzzle)

Michael Borcherds
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