Steve Phelps – Resources – GeoGebra

Explaining Number Tricks Using Deductive Reasoning
Activity
Steve Phelps
Proof Without Words
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Steve Phelps
Factoring Trinomials (Leading Coefficient 1)
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Steve Phelps
Notice and Wonder
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Steve Phelps
Conics through 3 points with given Focus
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Steve Phelps
Reflection in a Conic
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Steve Phelps
Conic Sections
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Steve Phelps
Taylor Approximants of a Cubic
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Steve Phelps
Rotating Hyperboloids
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Steve Phelps
Consecutive Heads
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Steve Phelps
X(2) - Centroid
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Steve Phelps
X(1) - Incenter
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Steve Phelps
Quadric Surfaces
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Steve Phelps
Cross Sections of a Cube
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Steve Phelps
Solve this system
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Steve Phelps
Conic Sections
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Steve Phelps
Desargues' Theorem in 2D and 3D
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Steve Phelps
This or That: Rectangles?
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Steve Phelps
Graph the Line
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Steve Phelps
Lady Tasting Tea: Simulating Guesses
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Steve Phelps
Lady Tasting Tea: An Introduction.
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Steve Phelps
Correlation Exploration
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Steve Phelps
Square Cross SEction
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Steve Phelps
Revolve around an axis
Activity
Steve Phelps