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Click on 'Home' then scroll down to get to information about the history of many of the programs on this site and to see which programs have been recently updated or added.
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Click on 'Programs' to find links to all of the programs that are on this site. Most of the programs are related to math, but you will also find several related to color, a couple related to perspective, a drawing program, and more. Try out the Alien Arithmetic program in the Arithmetic area to have fun thinking in a different base.
Click on 'SCORM' to learn about Shareable Content Object Reference Models, what they are, why they are useful, and how to make your own.
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Eccentricity
Move the left focal point and the directrix to change the eccentricity and see how it affects the shape of the conic. What eccentricity gives you a parabola, an ellipse, and a hyperbola? Do you ever get a circle? If you are a student, discuss this with other students. If you are a teacher, this is a good program to project onto a screen or board and demonstrate to the class.
Open 'Eccentricity' in a Separate, Resizable Window
The original size of the program is four times larger than above. You may want to click on the link to open the program in a separate window.
Created: July 25, 2010Updated: August 11, 2010
© 2004-2018 by Laura Shears E-mail Laura Shears at laura@lsquaredmath.us for permission to copy materials on this website unless the material you want to use is noted to be written by another author or is from another source, (in which case you need to get permission from that author, not me). No permission is needed to link to this page or any page on this site.