Other
Washington Calligrapher's: Calligraphy Typeface Design
This brief page from the Washington Calligrapher's Guild gives several illustrations and explanations of calligraphy, lettering, and design. Teachers could use this as a short reference with examples.
Creative Science Centre
Creative Science Centre: A Portable Shortwave Rx Loop Antenna
A simple portable antenna is described that gives good radio reception on the main shortwave bands.