Thomas Jefferson National Accelerator Facility
Jefferson Lab: Games & Puzzles
A great place to reinforce topics covered in a fun way. Science, math, and more, specifically element games for all levels.
Chemicool
Chemistry: Periodic Table and More
Full of information on each individual element. Just click on the one you are researching and you will get all of the information you need from the general information all the way to cost of the element. Also contains video clips.