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Technology 
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Euclid's Elements, Book II, Pr...

Rectangle (Geometry) 
Java Applet 
Tool 

[0]

Euclid's proposition states properties and constructions that come from splitting a rectangle. The guide then examines the structure of the proposition. To reset the applet, press "r" while your cur...
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Golden Rectangle  Math Open R...

Rectangle (Geometry) 
Java Applet 
Tool 

[0]

An interactive applet and associated web page that illustrate the properties the "Golden Rectangle" whose sides are in the "golden Ratio" of 1 : 1.618 : 1.
The applet shows a golden rectangle whos...
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Perimeter of a rectangle  Ma...

Rectangle (Geometry)+ 
Java Applet 
Tool 

[0]

A web page and interactive applet show how to compute the perimeter of a rectangle.
A rectangle is shown that can be resized by dragging its vertices. As you drag, the perimeter is continuously...
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Rectangle, definition and pro...

Rectangle (Geometry) 
Java Applet 
Tool 

[0]

A web page and interactive applet showing the definition and properties of a rectangle.
The applet shows a rectangle where the user can drag any vertex. The other points then move in such...
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Paramertic Surfaces in Rectang...

Rectangular (2D & 3D) (Trigonometry)+ 
Flash 
Tool 

[0]

We present two versions of a 3D grapher that graphs a parametric surface defined in rectangular coordinates. The user enters parametric formulas for the x, y, and z coordinates and the applet draws th...
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Conways Game of Life

Recursion (Discrete Math)+ 
Java Applet 
Tool 

[2]

Discover the rules that determine change in these simulations.
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Recursion

Recursion and special sequences (Algebra II) 
Java Applet 
Tool 

[0]

This activity graphs recursive functions of the form f(0) = C, defining f(n) based on f(n  1).
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Trout Population Grapher

Recursion and special sequences (Algebra II)+ 
Java Applet 
Tool 

[0]

The user can change the values of the initial population size, the yearly restocking amount, and the growth factor of the trout population in a pond, and then view the graph of the population size.
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Using Graphs, Equations, and T...

Recursion and special sequences (Algebra II)+ 
JavaScript 
Tool 

[0]

This threepart example illustrates the use of iteration, recursion, and algebra to model and analyze the changing amount of medicine in an athlete's body.
In Modeling the Situation, an i...
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Transformations  Reflection

Reflection (Geometry) 
Java Applet 
Tool 

[0]

Dynamically interact with and see the result of a reflection transformation.
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Area and perimeter of a rectan...

Reflections (Math 4)+ 
Flash 
Tool 

[1]

A web page and interactive (Flash) applet demonstrating the reflection transformation. Drag the vertices of a triangle and reposition the line of reflection. The reflected image of the triangl...
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Transformations  Reflection

Reflections (Math 4)+ 
Java Applet 
Tool 

[0]

With this virtual manipulative you can create objects with pattern block pieces and explore reflections as transformations of the plane.
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Composing Reflections

Reflections (Math 5)+ 
Java Applet 
Tool 

[0]

Users can examine the result of reflecting a shape successively through two different lines.
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Describing Reflections

Reflections (Math 6)+ 
Java Applet 
Tool 

[0]

Interacting with the JavaSketchpad applets helps the user understand how reflections work and what happens when two or more reflections are applied one after the other.
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Reflections Across Two Mirror ...

Reflections (Math 6)+ 
Java Applet 
Tool 

[0]

Users will learn what happens when a design is reflected twice across two different mirror lines with this interactive activity.
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Transformations  Reflection

Reflections (Math 7) 
Java Applet 
Tool 

[0]

Dynamically interact with and see the result of a reflection transformation.
More: lessons, discussions, ratings, reviews,...

Constructing a hexagon inscrib...

Regular polygons (Geometry)+ 
Flash 
Tool 

[0]

An interactive applet and associated web page that provide stepbystep instructions on how to construct
a hexagon inscribed in a circle using only a compass and straightedge.
The method begin...
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Dividing a Square

Regular polygons (Geometry) 
Java Applet 
Tool 

[0]

This applet demonstrates the problem with the way that the square is rearranged so that the area is changed by the manipulation.
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Euclid's Elements, Book 4, Pro...

Regular polygons (Geometry)+ 
Java Applet 
Tool 

[0]

Euclid's proposition shows how to inscribe an equilateral and equiangular pentagon within a given circle. The guide then examines the structure of the proposition. The To reset the applet, press "r"...
More: lessons, discussions, ratings, reviews,...

Euclid's Elements, Book 4, Pro...

Regular polygons (Geometry)+ 
Java Applet 
Tool 

[0]

Euclid's proposition shows how to circumscribe an equilateral and equiangular pentagon about a given circle. The guide then examines the structure of the proposition. The To reset the applet, press ...
More: lessons, discussions, ratings, reviews,...

Euclid's Elements, Book 4, Pro...

Regular polygons (Geometry)+ 
Java Applet 
Tool 

[0]

Euclid's proposition shows how to inscribe a circle within a given equilateral and equiangular pentagon. The guide then examines the structure of the proposition. The To reset the applet, press "r" ...
More: lessons, discussions, ratings, reviews,...

Euclid's Elements, Book 4, Pro...

Regular polygons (Geometry)+ 
Java Applet 
Tool 

[0]

Euclid's proposition shows how to circumscribe a circle about a given equilateral and equiangular pentagon. The guide then examines the structure of the proposition. The To reset the applet, press "...
More: lessons, discussions, ratings, reviews,...

Euclid's Elements, Book 4, Pro...

Regular polygons (Geometry)+ 
Java Applet 
Tool 

[0]

Euclid's proposition shows how to inscribe an equilateral and equiangular hexagon within a given circle. The guide then examines the structure of the proposition. The To reset the applet, press "r" ...
More: lessons, discussions, ratings, reviews,...

Euclid's Elements, Book 4, Pro...

Regular polygons (Geometry)+ 
Java Applet 
Tool 

[0]

Euclid's proposition shows how to inscribe an equilateral and equiangular 15angle figure within a given circle. The guide then examines the structure of the proposition. The To reset the applet, pr...
More: lessons, discussions, ratings, reviews,...

Regular m/nPolygons

Regular polygons (Geometry) 
Java Applet 
Tool 

[0]

This page provides instructions for constructing a regular m/npolygon and an applet that you must use in order to complete the activities given at the bottom of the page
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