A helpful scientific calculator that runs in your web browser window.
Holt Online Learning
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This video includes sample exercises and step-by-step explanations of conic sections for the California Standards Test.
Khan Academy
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A tutorial of parabolas,focusing on vertex form and the focus and directrix, including several example problems.
Algebra Lab
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Excellent site showing examples of algebra, trig, calculus, differential equations, and linear algebra.
Paul's Online Math Notes
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A site with step by step tutorials on how to draw and graph a variety of mathematical functions
Analyze Math
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Online graphing calculator, useful for drawing out a function to visualize it or find key points.
http://www.coolmath.com
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Standard form of a parabola and vertex equations
Standard form of a parabola
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A tool that lets you interact with the graph of a parabola by changing the directrix and the focus.
math warehouse
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Equations and graphs of parabolas.
Mathworld
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