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Resource Name 
Topic (Course) 
Technology 
Type 
$? 
Rating 

Sums of Sinusoidal Functions

Transforming Graphs (Trigonometry) 
Sketchpad 
Tool 

[0]

Students model wave superposition and wave packets, analyzing sums of sinusoidal waves. The link to the tool itself is to a zip file that contains both the sketch and a pdf file of the correspondin...
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Transformations  Translation

Translation (Geometry) 
Java Applet 
Tool 

[0]

Dynamically interact with and see the result of a translation transformation.
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Transformations  Translation

Translations (Math 4)+ 
Java Applet 
Tool 

[0]

Dynamically interact with and see the result of a translation transformation.
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The translation transformation...

Translations (Math 4)+ 
Flash 
Tool 

[0]

A web page and interactive (Flash) applet demonstrating the translation transformation. Drag the vertices
of a given triangle, and the translated image of the triangle is updated as they drag. ...
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Symmetries and Their Propertie...

Translations (Math 6)+ 
Java Applet 
Tool 

[0]

Interacting with JavaSketchpad applets will help users to understand how translations work and what happens when two or more translations are applied one after the other.
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Transformations  Translation

Translations (Math 7) 
Java Applet 
Tool 

[0]

With this virtual manipulative you can create objects with pattern block pieces and explore translations (slides) as transformations of the plane.
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Translation

Translations (Math 7)+ 
Java Applet 
Tool 

[0]

This applet demonstrates the effect of translation on a shape.
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Transversal Lines  Math Open ...

Transversals (Geometry) 
Java Applet 
Tool 

[0]

An interactive applet and associated web page that demonstrate the transversal, a line that crosses two other (usually parallel) lines.
The applet shows two lines that are initially parallel, and ...
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Trapezoid, definition and pro...

Trapezoid (Geometry) 
Java Applet 
Tool 

[0]

A web page and interactive applet showing the definition and properties of a trapezoid.
The applet shows a trapezoid where the user can drag any vertex. The other points then move in such...
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Area of a Trapezoid  Math Ope...

Trapezoid (Geometry) 
Java Applet 
Tool 

[0]

A web page and interactive applet showing the ways to calculate the area of a trapezoid. The user can drag the vertices of the trapezoid and the other points change automatically to ensure it remai...
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Median of a Trapezoid  Math O...

Trapezoid (Geometry) 
Java Applet 
Tool 

[0]

An interactive applet and associated web page that demonstrate the median line of
a trapezoid (line linking midpoints of nonparallel sides).
The applet shows a trapezoid with all vertices drag...
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Perimeter of a trapezoid  Mat...

Trapezoid (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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The Pythagorean Theoremand M...

Triangles (Geometry)+ 
TINspire 
Activity 

[0]

In this activity, students construct a triangle and ﬁnd all angle and side measures. They practice dragging the vertices to form certain types of triangles, and then they conﬁrm the Pyth...
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Medians in a Triangle

Triangles (Geometry)+ 
Sketchpad 
Activity 

[0]

A guided exploration of medians in a triangle using Geometer's Sketchpad.
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Geometry Quickies #1

Triangles (Geometry)+ 
Sketchpad 
Activity 

[0]

The activity based around medians in this series may generate some questions. Here is a further exploration of the topics it raised, again with reference to Geometer's Sketchpad.
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Three Tangents to a Circle

Triangles (Geometry)+ 
Sketchpad 
Activity 

[0]

A guided exploration of a triangle formed by three tangents to a circle, and interrelations between its perimeter and the location of the tangents, using Geometer's Sketchpad.
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Circumscribed Triangles

Triangles (Geometry)+ 
Sketchpad 
Activity 

[0]

A guided exploration of the relationship between the midpoints of a triangle inscribed in a circle, and the center of the circle, using Geometer's Sketchpad.
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The Centroid of a Triangle

Triangles (Geometry)+ 
Sketchpad 
Activity 

[0]

An exploration using Geometer's Sketchpad of the centroid of a triangle, and the way it divides the larger triangle.
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Inscribed Triangles

Triangles (Geometry)+ 
Sketchpad 
Activity 

[0]

A guided exploration, using Geometer's Sketchpad, of a property of triangles inscribed in a circle.
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A "Possibly New Theorem"

Triangles (Geometry)+ 
Sketchpad 
Activity 

[0]

This guided exploration, using Geometer's Sketchpad, leads students to notice what John Conway saw in this triangle construction.
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A Triangle Center

Triangles (Geometry)+ 
Sketchpad 
Activity 

[0]

In this guided exploration, students use Geometer's Sketchpad to discover a characteristic of one of the special triangle centers.
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A New Discovery by Harold Sten...

Triangles (Geometry) 
Sketchpad 
Activity 

[0]

In this guided exploration, students use Geometer's Sketchpad to develop their intuition about triangles and cevians in general, and a proof by Harold Stengel in particular.
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Triangle Inequality in Animati...

Triangles (Geometry) 
Computer 
Lesson Plan 

[0]

This lesson shows you how to create an animation of the triangle inequality using Geometer's Sketchpad.
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Fixed Area of a Triangle

Triangles (Geometry) 
Computer 
Lesson Plan 

[0]

This lesson gives directions for teaching the fixed area of a triangle given a fixed base and height using Geometer's Sketchpad.
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The Triangle Inequality

Triangles (Geometry) 
Computer 
Lesson Plan 

[0]

This lesson provides directions for teaching about triangle inequality using Geometer's Sketchpad.
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