Chemistry, Elementary Education, The Periodic Table

I've mostly been thinking about physics, earth sciences, biology, and the scientific method. I've just started to think about Chemistry which is arguably, the most important and central science. Here's what I've been reading:

A Blog Post About Chemistry which covers a range of issues from the periodic table to teaching chemistry in alterative ways.

Teresa's howtoteachscience.com ....Cd, book...websites...

Federal Resoures for teaching science

Concord.org with their molecular workbench database of curriculum, models, and activities.