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Technology 
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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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Java Kali

Reflections (Math 4) 
Java Applet 
Tool 

[1]

Kali is a program that lets you draw symmetrical patterns based on any of the 17 wallpaper groups, as well as several frieze and rosette groups.
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Making a Kaleidoscope

Reflections (Math 4) 
Sketchpad 
Tool 

[1]

In this activity, students create their own Sketchpad kaleidoscopes. In the process, they learn about rotation and reflection, as well as gaining some skill using Sketchpad's transformation features.
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Tessellation Creator

Reflections (Math 4) 
Computer 
Tool 

[0]

A tessellation is a repeating pattern of polygons that covers a plane with no gaps or overlaps. What kind of tessellations can you make out of regular polygons?
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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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Mirror Tool

Reflections (Math 4) 
Java Applet 
Tool 

[0]

This Java applet helps users investigate symmetry. Mirrors can be used to create reflection symmetry.
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Transformations on the Coordin...

Reflections (Math 4) 
Java Applet 
Tool 

[0]

Practice transformations (reflection, rotation, and translation). Then try your hand at the game  figure out how to transform the shape to match the target shape. Reflections are over the x and y...
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Pentomino puzzles

Reflections (Math 4) 
JavaScript 
Tool 

[0]

Rotate pentominoes to tile an 8×8 grid. This JavaScriptpowered online puzzle lets you select from a variety of decorative patterns and graphic designs.
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RooBooGoo

Reflections (Math 4) 
Sketchpad 
Tool 

[0]

The idea of this activity is to introduce students to some of the basic transformational behaviors. The emphasis is less on properties than on relationships between objects that have been reflected, r...
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Funhouse Mirrors

Reflections (Math 4) 
Sketchpad 
Tool 

[0]

A Geometer's Sketchpad tool for constructing distorted images that can be viewed undistorted with a cylindrical mirror. The file contains tabbed pages with several images, a grid for students to draw...
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MindTweak

Reflections (Math 4) 
iPad 
Tool 
$ 
[0]

MindTweak is like taking your brain to the gym for a visual thinking workout. Visual thinking refers to the skills involved in reading, interpreting, comprehending, comparing, analyzing, synthesizing ...
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GeomeTwee

Reflections (Math 4) 
iPad 
Tool 

[0]

This is the junior version of GeomeTree. It enables the manipulation of geometric trees with two or three branches. Change angle between branches and change common ratio. Selectable themes draw ...
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KaleidoPaint

Reflections (Math 4) 
iPad 
Tool 

[0]

As you draw, KaleidoPaint mirrors your brushstrokes to create a beautiful infinitely repeating design. Features: 
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