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Technology 
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Equation of a Horizontal Ellip...

foci (PreCalculus) 
Flash 
Tool 

[0]

Flash introduction to finding the equation of an ellipse centered on (0,0) and with its major axis on the xaxis. Students can use this Tab Tutor program to learn about the equation of this ellipse an...
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Equation of a Vertical Ellipse

foci (PreCalculus) 
Flash 
Tool 

[1]

Flash introduction to finding the equation of an ellipse centered on (0,0) and with its major axis on the yaxis. Students can use this Tab Tutor program to learn about the equation of this ellipse an...
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Ellipse Game

foci (PreCalculus) 
Java Applet 
Tool 

[1]

Try to click on one of the foci of the ellipse; feedback is given if you get closer/farther away.
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Elliptical Pool Table

foci (PreCalculus) 
Java Applet 
Tool 

[1]

Choose "New Toys" from the menu bar when it has loaded (be patient); then choose "Elliptical Pool Table" one that in turn is loaded. This applet simulates pool on a table where the "pocket" is the rig...
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Foci of an ellipse  Math Open...

foci (PreCalculus) 
Java Applet 
Tool 

[0]

An interactive applet and associated web page that show the definition and properties of the focus points (foci) of an ellipse.
The applet has an ellipse whose major and minor axes can be dragge...
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Optical Properties of Elliptic...

foci (PreCalculus) 
Java Applet 
Tool 

[0]

An interactive applet and associated web page that demonstrate the optical properties of elliptical mirrors.
Rays that pass through one focus of an ellipse always are reflected so they pass thro...
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Conic_Connections

foci (PreCalculus) 
Sketchpad 
Tool 

[1]

The user manipulates a plane and doublenapped cone to generate graphs and equations of conic sections. Eccentricity, foci, and directrices are also illustrated in both 2 and 3D.
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