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Topic (Course) 
Technology 
Type 
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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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Conic Graphing App Activity

Conic sections (Algebra II) 
TI83/TI84 
Activity 

[1]

Stepbystep directions on how to use the Conic Graphing App to help students learn about circles, ellipses, hyperbolas, and parabolas, and solve for the conic's characteristics. Equations are present...
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Exploring Conic Sections with ...

Conic sections (Algebra II) 
Sketchpad 
Activity 
$ 
[0]

Students will explore the richness of conic sections by building their own physical models and then constructing more flexible models with Sketchpad. Students retain a solid connection with th...
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Properties of an Ellipse

Conic sections (Algebra II) 
TINspire 
Activity 

[0]

This activity is intended to provide students with an opportunity to discover a few interesting properties of an ellipse. The ﬁrst property students will explore forms the basis of the deᤙ...
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Trace of Shadow

Conic sections (Algebra II) 
Java Applet 
Activity 

[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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Conic Sections

Conic sections (Algebra II) 
JavaScript 
Support Material 

[1]

The user reviews the different conic sections with illustrations and equations for each.
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Parametric Representations of ...

Conic sections (Algebra II) 
TI Calculator 
Support Material 

[0]

This brief monograph is a learning/teaching tool to graph parabolas, ellipses, and hyperbolas using parametric equations. The corresponding trigonometric conversions and explanations are included.
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Conic Flyer

Conic sections (Algebra II) 
Java Applet 
Tool 

[3]

This activity allows the user to manipulate the graphs of the conic sections by changing the constants in their respective equations. The equation and variable values are displayed and change as the u...
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Conic Graphing App

Conic sections (Algebra II) 
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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Conic Sections

Conic sections (Algebra II) 
Java Applet 
Tool 

[0]

This applet allows the user to vary parameters in the "generalized" conic equation, ax^2 + bxy + cy^2 + dx + ey + f = 0, as well as displace graphs. Instructions and some discussion included.
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Equation of a Parabola

Conic sections (Algebra II) 
Flash 
Tool 

[0]

A parabola is the set of points that are equally distant from the focus point and the directrix. This Tab Tutor program will help you learn about the equation of a parabola and how to use it to derive...
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GeoCalc

Conic sections (Algebra II) 
Computer 
Tool 

[0]

Macintosh shareware for calculating the area, perimeter, sides, angles, and other measures of two and threedimensional shapes such as ellipses, rectangles, triangles, trapeziums, parallelograms, pol...
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Laboratory

Conic sections (Algebra II) 
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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powerOne^{TM} Graph v4

Conic sections (Algebra II) 
Palm OS 
Tool 
$ 
[1]

powerOne(r) Graph supports computation & graphing in the mathematics classroom. The following tasks can be done with this software on a handheld computer including: 
Euler Circuits and Euler Trail...

Constr. an Euler circuit (Discrete Math) 
Flash 
Tool 

[0]

This set of problems consists of a handful of randomly selected graphs for which the user is to find an Euler circuit or trail (i.e., a walk in the graph that uses every edge exactly once) if it exist...
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Mathematical Modeling

Constr. an Euler circuit (Discrete Math) 
Computer 
Tool 
$ 
[0]

This educational software allows students to manipulate the data in the models to see how changes can affect the entire system. Students can also explore mathematical concepts such as connectivity, ce...
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Simple Constructions

Construction and loci (Geometry) 
Cabri Jr. 
Activity 

[1]

In this activity students use the Cabri Jr. application to perform simple constructions.
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Basic Constructions (Getting S...

Construction and loci (Geometry) 
Flash 
Support Material 

[0]

This minilesson explains the concepts and procedures for basic constructions.
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Constructing Parallel and Perp...

Construction and loci (Geometry) 
Flash 
Support Material 

[0]

This minilesson explains how to construct parallel and perpendicular lines, using earlier lessons about the basics of compass and straightedge construction.
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Midpoint of a Line Segment (Ge...

Construction and loci (Geometry) 
Flash 
Support Material 

[0]

This lesson explains how to construct the midpoint of a line segment and inscribe a circle in a given triangle.
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4 Standard Types of Loci

Construction and loci (Geometry) 
Java Applet 
Tool 

[0]

This allows students to explore 4 loci problems with a JavaSketchpad sketch: from 1 fixed point, from 1 fixed line, from 2 fixed points, and from 2 fixed lines. The students can manipulate the drawin...
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Constructing the Perpendicular...

Construction and loci (Geometry) 
Java Applet 
Tool 

[0]

Students can learn how to construct the perpendicular bisector of a line segment. The applet asks students a few exploration questions to think about and try to discover through further experimentati...
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Draw ellipse with pins and str...

Construction and loci (Geometry) 
Java Applet 
Tool 

[0]

An interactive applet and associated web page that provide stepbystep instructions on how to draw an ellipse
using two pins and some string. Not strictly a Euclidean construction, but instruct...
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Equidistant points  Math Open...

Construction and loci (Geometry) 
Java Applet 
Tool 

[0]

An interactive applet and associated web page that have the definition and meaning of "equidistant" as applied to points.
The applet shows to points and another that is equidistant from them no m...
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GeoCon

Construction and loci (Geometry) 
iPhone 
Tool 
$ 
[1]

GeoCon is designed to be used by students, teachers and math enthusiasts studying plane geometry. With GeoCon various constructions can be created with the touch of a finger. Resolve construction task...
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