I have been showing off Khan Academy to friends for many months now and I must apologize for not pointing you all to such an informative and interesting site any sooner. If you want to refresh your skills in math, science, chemistry, economics, finance, history, physics… the list goes on and on, go to this site: www.khanacademy.org. Scroll down the page and be amazed at all the educational videos. This is a great resources for you to learn a few new things or refresh your memory, or for your kids to enjoy learning even the most complex of subjects in a fun way.