Chemistry Never Sleeps and Free Chemistry Lessons

My colleague and chemistry teacher, Walter Perry, started a blog this summer as a companion to his classroom blog. Over the last four months he's slowly added some useful content to Chemistry Never Sleeps. Chemistry Never Sleeps is a mix of Walter's personal commentary about teaching with links and examples of Chemistry resources for teachers and students. A recent post included a slide presentation about the Periodic Table.

Exploring the links on Chemistry Never Sleeps brought me to Mr. Guch's Free Stuff for Chemistry Teachers. Mr. Guch's free stuff includes four free ebooks containing lesson plans, lectures, and quizzes that Mr. Guch developed for his high school Chemistry classes.

Here are some related items that may be of interest to you:
Open Chemistry - Free Content for Teaching Chemistry
The Interactive Periodic Table
Video Demonstrations of the Periodic Table of Elements