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## Geometry Play: Multiple Acts

Every once and a while you stumble across something really neat...and you want to share it. The website ProtoZone is a prime example....and I hope I do it justice.

The website was created by two gentlemen, Al Jarnow and and James Metcalfe, who make "things that move . . . and keep on moving eyes and hands and gears and minds." That is, they specialize in the creation of interactive projects at museums and child exhibits.

And, they are kind enough to share some of their software creations. Some of my "first" favorites:

• Borderliners: Lets user explore the seven frieze (wallpaper border patterns)
• WallOvers: Lets user explore some of the 2-D wallpaper patterns
• LinoTiler: Lets user explore the geometrical patterns underlying tile floors
• HexTiles: Lets user explore Islamic-like patterns
• Sampler: Lets user explore the visual effects of geometric transformations (linear)
• Quilter: Lets user explore the visual effects of geomeric transformations (planer)
• MagicCarpet: Lets user explore symmetry patterns via the creation of a carpet design
• KalideoDraw: Lots of fun with symmetry
• Ucello: Creation of 3-D objects involving symmetry...fantastic!
• Cubits: The dream of every teacher who has worked with stacked-cube problems
• ShellSpinner: Lets user explore the geometry of shell patterns
• uSHELLo: Combines Ucello with ShellSpinner
• Mobile: Interesting geometry...and some physics via Archimedes law of the lever
• SpaceCadet: Lets user create 3-D objects, rotate them, etc. (i.e. visual play!)
• BeeBopper: A new variation on an old solitaire game
• Hex-Plex: Challenges user to recreate visual patters
• The Game of Life: John Conway's creation created in a new way.....I suggest you read up on the "Game of Life"...what it is about, rules, etc. as that is needed to make this software of value
This is only part of what is offered. They also have "art machines"...but they lost my interest relative to the above suggestions. Also, the website includes a gallery of some of the two men's creations for childrens' museums. It looks like they are having fun...and sneaking in some mathematics and science when possible.

Have fun with the web site....hope you can find a place to insert some of their creations into your curriculum.