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Topic (Course) 
Technology 
Type 
$? 
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Drawing Parabola

parabolas (PreCalculus) 
Java Applet 
Tool 

[0]

The applet manipulates an apparatus that draws a parabola from its definition that the distance from a fixed point called the focus is equivalent to the distance from a fixed line called the directri...
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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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Ellipse definition and propert...

ellipses (PreCalculus) 
Java Applet 
Tool 

[0]

An interactive applet and associated web page that show the definition and properties of an ellipse.
The applet has a draggable point that shows that the sum of the distances to the foci is a co...
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Ellipse major and minor axes ...

major / minor axes (PreCalculus) 
Java Applet 
Tool 

[0]

An interactive applet and associated web page that show the major and minor axes of an ellipse.
The applet has an ellipse whose major and minor axis endpoints can be dragged. As they are dragge...
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Elliptical Gear

ellipses (PreCalculus) 
Java Applet 
Tool 

[0]

The workings of an ellipse as a gear.
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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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Exploring Parabolas

parabolas (PreCalculus) 
Java Applet 
Tool 

[0]

Explore the properties of parabolas through a geometric perspective within your browser window.
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Exploring Parabolas

parabolas (PreCalculus) 
Java Applet 
Tool 

[0]

JavaSketchpad applet for "carving" a parabola
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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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Focus of parabola

foci (PreCalculus) 
Java Applet 
Tool 

[0]

This applet illustrates the phenomena that parallel beams reflect on the parabola face and gather at one point. The point is the focus of parabola. Using the applet, investigate the relationship bet...
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Laboratory

Conic Sections (PreCalculus) 
Java Applet 
Tool 

[0]

When the sun moves around in the sky, the shadow cast by a vertical stick moves on the ground. The tip of the shadow traces some kind of curve. The curve depends on the observation point, and it also ...
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Optical Properties of Elliptic...

ellipses (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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Problem of Hyperbola

hyperbolas (PreCalculus) 
Java Applet 
Tool 

[0]

The defintion of a hyperbola is illustrated using this applet. When concentric circles are formed at each of the foci, the intersections of the circles must satisfy the constant difference.
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Reflective Properties of Ellip...

ellipses (PreCalculus) 
Java Applet 
Tool 

[0]

Interactive page to demonstrate the reflective properties of ellipses.
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Reflective Properties of Hyper...

hyperbolas (PreCalculus) 
Java Applet 
Tool 

[0]

Interactive page to demonstrate the reflective properties of hyperbolas.
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Semimajor and Semiminor axes...

ellipses (PreCalculus)+ 
Java Applet 
Tool 

[0]

An interactive applet and associated web page that show the semimajor and semiminor axes of an ellipse.
The applet has an ellipse whose major and minor axis endpoints can be dragged.
As they...
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Tangent to an Ellipse  Math O...

ellipses (PreCalculus) 
Java Applet 
Tool 

[0]

An interactive applet and associated web page that demonstrate the tangent to an ellipse.
An ellipse is shown and a tangent line that touches it at the one point.
The user can drag the tang...
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The Focusdirectrix Definition

Conic Sections (PreCalculus) 
Java Applet 
Tool 

[0]

The CabriJava applet shows a conic with focus F, directrix L passing through a point P. The choice of P determines the eccentricity  as the ratio PQ/PF. You can move F and P to see what shapes ar...
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Toy

ellipses (PreCalculus) 
Java Applet 
Tool 

[0]

An interactive page to demonstrate an ellipse.
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Conic_Connections

general, standard forms of equations (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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Ellipses: The Congruent Triang...

ellipses (PreCalculus) 
Sketchpad 
Tool 

[0]

A pair of congruent triangles holds the key to this unusual Sketchpad ellipse construction. The link to the tool itself is to a zip file that contains both the sketch and a pdf file of the correspo...
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Parabolas: The Folded Rectangl...

parabolas (PreCalculus) 
Sketchpad 
Tool 

[0]

With just a blank sheet of paper and a single point, students can fold a genuine parabola. Students model the technique with Sketchpad to reveal the underlying mathematics. The link to the tool it...
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Conic Graphing App

Conic Sections (PreCalculus) 
TI83/TI84 
Tool 

[0]

This App will present equations in function, parametric, or polar form and provides a simple way to graph the four conic shapes: circle, ellipse, hyperbola, and parabola. The required parameters can b...
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