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Zhang Guangmin
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天津市南开中学数学教师，email：timegm@msn.com
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九点圆
Zhang Guangmin
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GeoGebra 与高中数学
Zhang Guangmin
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4.5.7 勾股树（迭代）
Zhang Guangmin
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试验次数与频率的关系（投掷一枚硬币）
Zhang Guangmin
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投掷一枚硬币的实验
Zhang Guangmin
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3.2.6 七巧板
Zhang Guangmin
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概率与统计
Zhang Guangmin
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三角函数
Zhang Guangmin
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从摩天轮到三角函数图像
Zhang Guangmin
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2.2.12 利用尺规作图方式 绘制两个圆以及其外公切线
Zhang Guangmin
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模拟扔骰子，探究实验次数与均值的关系
Zhang Guangmin
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地球上的直線距離
羅驥韡 (Pegasus Roe)
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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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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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Exponential or Logistic Function that…
talljerome
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Growth of Facebook.com
Roy Wright
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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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'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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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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