1. This web sight allows you to download a free open source planetarium for your computer. This is one of my favorite contributions because it is neat to be able to see and manipulate the sky in real time. a href="http://stellarium.org/>">http://stellarium.org/>;

2. The ACS Education Division has developed a new middle school chemistry resource called Middle School Chemistry: Big Ideas about the Very Small. This resource can serve as either a stand-alone chemistry unit or as a supplement to any middle school science curriculum. It promotes a hands-on inquiry approach, along with specially designed molecular model animations, to take students from concrete experiences to an understanding of the abstract world of atoms and molecules. a href="http://www.middleschoolchemistry.com/>">http://www.middleschoolchemistry.com/>;