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Robert Radu
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Addition and Subtraction Within 1000
Robert Radu
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Vertical Angles Exploration (2)
Tim Brzezinski
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Cazurile de congruenta a triunghiurilor
Sorin Borodi
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Simetria față de o dreaptă
Robert Radu
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Simetria respecto al eje y
Robert Radu
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Open Middle: Systems of Linear Equati…
Tim Brzezinski
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Quadrilaterals with 4 Equal Sides
Anthony Or 柯志明
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Fractions & Percentages 分數和百分數
Alex CHIK
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Drawing Triangles on Pin-boards
Anthony Or 柯志明
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Unghi format de tangenta si coarda
Robert Radu
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Interior and Exterior Angles of Polygons
Rasha Tarek
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Cercul lui Thales
Robert Radu
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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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Guess My Rule (2013)
John Golden
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5-Piece Puzzle
Duane Habecker
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GeoGebra Pentominoes
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: Where's the Mean?
Steve Phelps
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Secant Slope Calculator
Jake Binnema
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Exponential or Logistic Function that…
talljerome
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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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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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'Tangram' Puzzle 'Cat'
GeoGebra Translation Team German
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Moss Egg by Robert Dixon
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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Factorization - Visual illustration o…
Ethan Hall
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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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