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Resource Name 
Topic (Course) 
Technology 
Type 
$? 
Rating 

Cutouts, Nets

Regular polyhedra (Geometry)+ 
Java Applet 
Tool 

[18]

Dynamic net for constructing Platonic solids. Slider adjusts from flat to solid; it is interesting to see the shapes materialize from the flat nets.
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Dividing a Quadrilateral

Quadrilaterals (Geometry) 
Java Applet 
Tool 

[0]

This applet demonstrates how to divide a quadrilateral into two equal halves.
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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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Dividing a Triangle

Perimeter, area, and volume (Geometry) 
Java Applet 
Tool 

[0]

These two applets help you discover two ways to divide a triangle into two equal parts (in terms of area).
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Fill and Pour

Cylinders (Geometry)+ 
Java Applet 
Tool 

[4]

Fill a glass with the requested amount of liquid by filling, emptying, and pouring between it and a second container. Click the "New Problem" button to generate new parameters; "Challenge" creates con...
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Geoboard

Perimeter, area, and volume (Geometry) 
Java Applet 
Tool 

[0]

Use geoboard to illustrate area, perimeter, and rational number concepts.
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Geoboard

Perimeter, area, and volume (Geometry) 
Java Applet 
Tool 

[0]

Use geoboard to illustrate area, perimeter, and rational number concepts.
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Geoboard  Coordinate

Quadrilaterals (Geometry)+ 
Java Applet 
Tool 

[0]

Rectangular geoboard with x and y coordinates.
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Geoboard  Isometric

Volume (Geometry)+ 
Java Applet 
Tool 

[0]

Use geoboard to illustrate threedimensional shapes.
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Guess The View

2D pictures of 3D solids (Geometry) 
Java Applet 
Tool 

[6]

Students are given a 3d view of an object, and then given a 2d view of the object. Students must choose which of 6 views is being displayed from a list including front view, right side view, left si...
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Heron's Formula  Math Open Re...

Perimeter, area, and volume (Geometry) 
Java Applet 
Tool 

[0]

An interactive applet and associated web page that demonstrate how Herons Formula can be
used to find the area of a triangle when you know all three sides. A triangle is shown where the user can ...
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How High?

Prisms (Geometry)+ 
Java Applet 
Tool 

[0]

Try your hand at the classic piagetian conservation of volume test.
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Isometric Drawing Tool

Regular polyhedra (Geometry) 
Java Applet 
Tool 

[1]

Use this Java applet to create dynamic drawings on isometric dot paper. Draw figures using edges, faces, or cubes. You can shift, rotate, color, decompose, and view in 3D or 2D.
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Lathe

2D pictures of 3D solids (Geometry) 
Java Applet 
Tool 

[4]

Student draws top half of outline; a solid of rotation (horizontal axis) is produced (shown in perspective, dynamic).
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Maximizing the Area of a Recta...

Perimeter, area, and volume (Geometry) 
Java Applet 
Tool 

[0]

Students explore and discover the relationship between length of a side of a rectangle and the rectangle's area. They will try to determine what length maximizes the area.
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Out of the Box

Perimeter, area, and volume (Geometry)+ 
Java Applet 
Tool 

[1]

The Java applet simulates a piece of paper that is 9 inches by 9 inches long. Dragging the slider will show how much of the paper's corners will be cut. Clicking on "Save Values" will save the valu...
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Parametric Surfaces (3D Graph...

2D pictures of 3D solids (Geometry) 
Java Applet 
Tool 

[1]

Graphs surfaces in three dimensions specified parametrically, as x=f(s,t), y=g(s,t), and z=h(s,t), with parameters s and t.
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Perimeter of a Quadrilateral

Quadrilaterals (Geometry) 
Java Applet 
Tool 

[0]

This applet demonstrates the rule of the perimeter of a quadrilateral.
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Perimeter of a kite  Math Ope...

Perimeter, area, and volume (Geometry) 
Java Applet 
Tool 

[0]

A web page and interactive applet show how to compute the perimeter of a kite.
A kite is shown that can be resized by dragging its vertices. As you drag, the perimeter is continuously recalcula...
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Perimeter of a parallelogram ...

Quadrilaterals (Geometry)+ 
Java Applet 
Tool 

[0]

A web page and interactive applet show how to compute the perimeter of a parallelogram.
A parallelogram is shown that can be resized by dragging its vertices. As you drag, the perimeter is cont...
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Perimeter of a polygon  Math ...

Perimeter, area, and volume (Geometry) 
Java Applet 
Tool 

[0]

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

Perimeter, area, and volume (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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Perimeter of a rhombus  Math...

Perimeter, area, and volume (Geometry) 
Java Applet 
Tool 

[0]

A web page and interactive applet show how to compute the perimeter of a rhombus.
A rhombus is shown that can be resized by dragging its vertices. As you drag, the perimeter is continuously rec...
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Perimeter of a square  Math O...

Perimeter, area, and volume (Geometry) 
Java Applet 
Tool 

[0]

A web page and interactive applet show how to compute the perimeter of a square.
A square is shown that can be resized by dragging its vertices. As you drag, the perimeter is continuously recal...
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Perimeter of a trapezoid  Mat...

Perimeter, area, and volume (Geometry) 
Java Applet 
Tool 

[0]

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