Art

Architect Studio
http://www.architectstudio3d.org/AS3d/design_studio3d.html
Interactive house designing.

 

Digital Art Pad
http://artpad.art.com/artpad/painter/
This is a digital and fancier version of Microsoft paint.

 

Make Your Own Snowflake
http://snowflakes.barkleyus.com/

The Art Zone
http://www.nga.gov/kids/zone/zone.htm
Interactive art you can make online.

 

The Artist's Toolkit
http://www.artsconnected.org/toolkit/explore.cfm
Interactive demonstrations of visual elements and principles.