Here's a few videos from YouTube and other places that might help reinforce the subjects at hand:
Big Bang THEORY!!
Hope these help... keep an eye out, I'm always trying to update them.
Ted Ehrheart is a Junior High Science Teacher at Mission Viejo Christian School in Mission Viejo, California. This website was designed for my current students as a teaching tool. We use it on a daily basis at school. All Teachers, Students and any guest who may feel so inclined, are welcome to utilize the Video Tutorials (Screen Casts), PowerPoints, Slides, Photos, Lecture Notes, worksheets, etc., etc. on my website for their use. .