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Topic (Course) 
Technology 
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Dilations in the Plane

Dilation (Geometry) 
Cabri Jr. 
Activity 

[0]

A dilation is a transformation that produces a figure with a different size from that of the original figure. In this activity, students explore the properties of dilations and the relationships betwe...
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Dilation transformation  Math...

Dilation (Geometry) 
Computer 
Activity 

[0]

An interactive applet and associated web page that demonstrate the dilation transformation.
The applet shows a rectangle and its dilated image. The user can control the scale factor with a sl...
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Composition of Transformations...

Dilation (Geometry) 
Sketchpad 
Activity 

[2]

This "lab" contains seven "experiments" in which students perform different geometric transformations on an object to determine whether, or under what conditions, the transformations commute.
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Transformations

Dilation (Geometry) 
Sketchpad 
Activity 

[1]

Investigate reflections, translations, glide reflections, dilations, rotations of 90, 180, 270 or any degree, and composition of reflections. Animations included on several pages. Usable at various ...
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Enlargement of Figures

Dilation (Geometry) 
Java Applet 
Tool 

[1]

This applet demonstrates how transformation along lines through an origin is used to enlarge a figure.
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Pantograph

Dilation (Geometry) 
Java Applet 
Tool 

[0]

This applet is a pantograph, you must figure out the ratio of magnification.
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Transformations  Dilation

Dilation (Geometry) 
Java Applet 
Tool 

[0]

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

Dilation (Geometry) 
Sketchpad 
Tool 

[0]

Investigate reflections, translations, glide reflections, dilations, rotations of 90, 180, 270 or any degree, and composition of reflections. Animations included on several pages. Usable at various ...
More: lessons, discussions, ratings, reviews,...

Composition of Transformations...

Glide (Geometry) 
Sketchpad 
Activity 

[2]

This "lab" contains seven "experiments" in which students perform different geometric transformations on an object to determine whether, or under what conditions, the transformations commute.
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Dueling Pinwheels

Glide (Geometry) 
Sketchpad 
Activity 

[0]

This contains construction directions for rotations, translation, and reflection, with questions to explore and a demonstration sketch to download at an introductory Sketchpad level.
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Transformations

Glide (Geometry) 
Sketchpad 
Activity 

[1]

Investigate reflections, translations, glide reflections, dilations, rotations of 90, 180, 270 or any degree, and composition of reflections. Animations included on several pages. Usable at various ...
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Transformations Lab

Glide (Geometry) 
Sketchpad 
Activity 

[0]

This activity involves students using Sketchpad to explore reflections, translations, glide reflections, and rotations; it includes reference to a java applet as well.
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Symmetries and Their Propertie...

Glide (Geometry) 
Java Applet 
Tool 

[0]

Users will learn about glide reflection—a symmetry transformation that is made up of two other symmetry transformations, a translation and a reflection with this activity.
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Transformations  Composition

Glide (Geometry) 
Java Applet 
Tool 

[1]

With this virtual manipulative you can create objects with pattern block pieces and explore the effect of two transformations (Translations, Reflections, or Rotations) in any order. The product of two...
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Wallpaper

Glide (Geometry) 
PowerPoint 
Tool 

[1]

This PowerPoint file displays questions about symmetry; answers guide the user to one of 17 symmetry classifications for tessellations or wallpaper patterns. Support materials include handson tessel...
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Transformations

Glide (Geometry) 
Sketchpad 
Tool 

[0]

Investigate reflections, translations, glide reflections, dilations, rotations of 90, 180, 270 or any degree, and composition of reflections. Animations included on several pages. Usable at various ...
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Relationships Between Reflecti...

Reflection (Geometry) 
Java Applet 
Activity 

[1]

Users will learn the properties of designs that have bilateral symmetry in this activity.
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Composition of Transformations...

Reflection (Geometry) 
Sketchpad 
Activity 

[2]

This "lab" contains seven "experiments" in which students perform different geometric transformations on an object to determine whether, or under what conditions, the transformations commute.
More: lessons, discussions, ratings, reviews,...

Dueling Pinwheels

Reflection (Geometry) 
Sketchpad 
Activity 

[0]

This contains construction directions for rotations, translation, and reflection, with questions to explore and a demonstration sketch to download at an introductory Sketchpad level.
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Reflection and Rotation Symmet...

Reflection (Geometry) 
Sketchpad 
Activity 

[2]

Students test a variety of figures for symmetry by actually constructing reflections and rotations. The link to the tool itself is to a zip file that contains both the activity in pdf format and t...
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Reflections over Two Intersect...

Reflection (Geometry) 
Sketchpad 
Activity 

[0]

Students explore what happens when they reflect a figure over a line and then reflect the image over a second line that intersects the first. The link to the activity itself is to a zip file that c...
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Transformations

Reflection (Geometry) 
Sketchpad 
Activity 

[1]

Investigate reflections, translations, glide reflections, dilations, rotations of 90, 180, 270 or any degree, and composition of reflections. Animations included on several pages. Usable at various ...
More: lessons, discussions, ratings, reviews,...

Transformations Lab

Reflection (Geometry) 
Sketchpad 
Activity 

[0]

This activity involves students using Sketchpad to explore reflections, translations, glide reflections, and rotations; it includes reference to a java applet as well.
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Exploring the Definition of Re...

Reflection (Geometry) 
Computer 
Lesson Plan 

[1]

This lesson provides directions for teaching the definition of reflection using Geometer's Sketchpad.
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Reflection Postulates

Reflection (Geometry) 
Computer 
Lesson Plan 

[2]

This lesson provides directions for teaching the reflection postulates using Geometer's Sketchpad.
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