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平方完成の練習（レベル１）
薄井彰宏
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有名角の三角比の値（応用編・負の角）
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三角比の相互関係（正弦の値から）
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三角比の相互関係（正接の値から）
薄井彰宏
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三角比の相互関係（余弦の値から）
薄井彰宏
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三角比を求める
hamada
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単位円 サインとコサインの値
The Essential Math Meets
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二次関数
shigeretsu
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二次関数 場合分け
川井一貴
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二次関数
sawai0607
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直角三角形の三角比
Tatsuki Fujimoto
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二次方程式の係数と根の関係
Bunryu Kamimura
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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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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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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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Lower and Upper Sum of a Function
GeoGebra Materials Team
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Pendulum Wave Machine (Simulation)
Michael Borcherds
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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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Rotating a Triangle Around a Coordina…
Steve Phelps
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Triangle Paradox (Missing square puzzle)
Michael Borcherds
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