University of Colorado
University of Colorado: Physics 2000: Spectral Lines
Several pages from an excellent site which describe the science of spectroscopy. The unique atomic emission (and absorption) line spectrum of elements are illustrated and explained. Includes a Java applet depicting the quantum energy...
Virginia Tech
Virginia Cooperative Extension: Publications: Adolescent Growth and Development
During adolescence, teens begin to change physically, cognitively, and psychosocially in preparation for adulthood. Comprehensive article, aimed primarily at an adult readership, describes how adolescents develop.
Curated OER
Kids Health: Hygiene Basics
As a teen matures, physical features begin to change that they may find somewhat confusing. This article walks through the changes that a teen faces and how to confront them in the most comfortable manner possible. This site also...