Dr. Chris Seberino has created some free videos to help students with the math part of the PSAT and SAT. To access the videos that are part of the SAT Math Prep class for free, see the link at the top of this web page: http://phil4.com/videos
You can also view the videos on You Tube with this link: http://bit.ly/xtecUC
Dr. Seberino, a Christian homeschooler with two kids, received his Ph.D. in physics in 2000 from the University of California, San Diego. He offers live online Math, Physics & Computer Programming classes/tutoring. Visit his website at http://phil4.com