I have been introduced to a website named Kahn Academy. This website provides instructional lessons on a wide variety of school classes for your children. It may help those that have children that are in advanced math classes and we don't exactly remember how the problems work and therefore are not able to help our children with their homework without relearning the lessons as well. You will see that there are literally hundreds of lessons provided and I hope that this might help out some people.
http://www.khanacademy.org/