Sketch2Graph iPad App Tutorial

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https://itunes.apple.com/us/app/sketc... • Sketch2Graph is an educational math app. Use it to learn more about the relationship between the graphical and algebraic representation of math expressions. In most graphing apps you provide a math expression and get a graph. With Sketch2Graph it is the opposite-- you draw a graph and get back math that represents what you drew. • Pan and zoom the graph to get the view you want. Manipulate control points to move a plot and see its algebraic expression update in real-time. Click on algebraic expressions to toggle its form (e.g., vertex-form or standard form). • Lines, parabolas, and ellipses supported in this release. • Example uses: • 1. Discover the equation for a line that passes through two points by drawing the line. • 2. Discover the equation for an ellipse by drawing the ellipse. • 3. Learn about the difference between the standard and vertex form of a parabola equation by drawing a parabola and then clicking on the math to toggle between the two representations. • 4. Learn how the shape and position of an ellipse relates to its algebraic form. Draw an ellipse and then manipule its control points. Which control point changes the x-radius of the ellipse and how does the equation change? Which control point changes the y-radius of the ellipse and how does the equation change? Finally, which control point changes the position of the center of the ellipse and how does the equation change? • Explore on your own and share with your classmates and teachers. There are many lessons to learn from this app!

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