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四邊相等的四邊形
Anthony Or 柯志明
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認識對稱圖形
Anthony OR 柯志明
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18
四邊形 (2001 舊課程教師版)
GeoGebra Institute of Hong Kong
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11 Nets of the Cube
Anthony OR 柯志明
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Nets of the Cube
Anthony OR 柯志明
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因數（1至48）
Tong Wing Hong
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異分母分數加法
Tong Wing Hong
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Nets of a cube
kaitlyn_garner
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111220182A鐘面的時間（時和分 虛線）
kenneth chang
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同分母分數減法
Anthony OR 柯志明
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同分母分數加法
Anthony OR 柯志明
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21
四下_面積（一）(學生版)
Fung Kai NO.1 Primary School
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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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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: Mean but Sensitive
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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Lower and Upper Sum of a Function
GeoGebra Materials Team
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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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'Tangram' Puzzle 'Cat'
GeoGebra Translation Team German
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Moss Egg by Robert Dixon
Bill Lombard
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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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Factorization - Visual illustration o…
Ethan Hall
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Kaleidoscope
Michael Borcherds
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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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