The Solar System & Beyond Astronomy 101: A detailed site which includes complex information about theories of the solar system, the planets, and more. Good diagrams. Astronomy for Kids: Information about the stars and planets presented in an accessible tone, with some good images. BBC Online - Solar System Guide: Nice looking site providing links to information about each planet and its moons. Each planet gets a 2-3 paragraph summary (how it was discovered, named, etc.), followed by a list of statistics. Exploring Planets in the Classroom: Hands-on Activities: Created at the University of Hawai'i. Ideas for classroom activities relating to the characteristics of the planets, moon, and more. Also includes an extensive list of links to other space sites on-line. Lesson plans include background information, materials, and instructions, along with what to expect or how it works. Exploring the Planets - Gallery Entrance: This site contains a lot of information about the planets and their exploration. May be difficult for those new to the web to navigate, as each page leads to more and more links. Glossy appearance. The Nine Planets: A great website for background information on each planet. Several short paragraphs explaining what we know about each planet, charts listing statistics, images, sound clips to help with pronunciation, and questions or "open issues" for each planet. Solar System On-Line: This site LOOKS great, but I found it very hard to get to any actual CONTENT. It claims to provide support, in the form of lesson plans and live chats, to teachers. Perhaps it will improve? The Nine Planets for Kids: True to its word, this site is written for kids, in language they can understand, using a fun font. This would be good for students doing on-line research. Students should be familiar with the web, though, because this site is a little visually complex and tricky to navigate.

The Atmosphere & Ozone Layer Hole in the Ozone (Teacher's Guide): Here's the teacher's guide to a video explaining the ozone "hole". I sent for a copy of the video and found it to be a fairly complete, visually interesting video. Haven't used it with students, though, as it arrived after we finished our ozone unit. Produced by Chevron, presumably in order to assuage some of their corporate guilt. Composition of the Atmosphere: Part of a series of lesson plans on global atmospheric change, this page provides detailed background information and ideas for activities. Ozone & the Atmosphere: Information from NASA on the composition of the atmosphere, historically and at present, and the formation and destruction of stratospheric ozone. Easy to navigate, detailed and readable. Good reading for the teacher before beginning a unit on ozone depletion. The Ozone Layer: A colorful page providing standard background information on ozone formation & depletion, PLUS an explanation of the problems ozone depletion causes for human health, crops, etc. Nice diagrams. Stratospheric Ozone Depletion Tutorial: Summary of information about stratospheric ozone depletion, intended for teachers & students. Compiled by a high school teacher from a variety of sources. High level scientific vocabulary & concepts; appropriate for someone with a background in environmental science or another science.