Sig Fig Practice

http://chemistry.csudh.edu/lechelpcs/sigfigurescsn7.html
Determining number of sig figs

http://www.teacherbridge.org/public/bhs/teachers/Dana/SigFigOperations.html
Calculations

http://sciencegeek.net/Chemistry/taters/Unit0Sigfigs.htm
sig fig quiz

Other


http://www.csun.edu/chemteach
Chemistry teacher support group, with activities, and other resources for chemistry teachers.

http://www.acs.org
Full of chemical new, and resources for teachers, as well as the standards for teaching chemistry in the US

http://chem.sis.nlm.nih.gov/chemidplus/
Useful tool for finding molecular weights, and structures, as well as IUPAC names, and CAS Numbers of compounds.

http://geosurvey.state.co.us/Default.aspx?tabid=69
Official site of the Colorado Geologic Survey, all kinds of information on Coloraod geology.

http://www.nsta.org/
National Science Teachers Association website.

http://www.doe.state.in.us/dps/standards/teacherindex.html
Colorado education standards.

http://jchemed.chem.wisc.edu/
Journal of Chemical Education website.

http://www.chem.vt.edu/chem-ed/vt-chem-ed.html
The chemistry Hypermedia Project - A deep online resource of explanations, and concepts in chemistry.

http://education.usgs.gov/
The United States Geological Survey's education site. Full of fun activities and information relating to geology (Earth Science.)