User:Sankey
David Sankey, M. Ed.
email@mrsankey.com
I've been a math teacher for a few years. I think GeoGebra is great because it allows you to build an interface that makes sense, i.e., if you want to move a point, grab it and move it! The following are all of the files I've uploaded. I also included them in the appropriate pages.
Integrals
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Sliding for Area Grab and slide the lines to approximate the area under the curve. The order of the lines doesn't matter. By David Sankey
- 3D Rectangles and Circles Watch the rectangles and circles pop out of the graph! Grab the Red dashed lines to change a and b, move the sliders and see what happens! The height only applies to the rectangles. By David Sankey
- Riemann Animations Left hand, right hand and trapeziods, and animate everything in between! How could you find the midpoints? Simply grab the red dashed lines to change a and b. By David Sankey
Parametric and Polar Plotting
- Parametric Plotting Animation Animate t and watch it go! The colors coordinate to make understanding parametric plots a bit easier. The points on the red and blue lines match each other. By David Sankey
- Polar Plotting Animation Great animation of the relationship between Polar and Cartesian Coordinate systems. Note that the point is in the same place on both lines. By David Sankey
Bezier Curves
- Bezier Demonstration Shows a Bezier curve up to 7 points. Segments shows how it is constructed. Animate the t variable to draw the line. By David Sankey
- Bezier Alphabet Game Try the Bezier Alphabet game! I started with the letter A. You can try the rest. You have two Bezier curves that can go up to 10 points. Hide the points to challenge your students to make the same shapes. By David Sankey
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