http://www.youtube.com/watch?v=grWG_U4sgS8 This video explains the difference between weight and mass! http://www.youtube.com/watch?v=HkvlrWpsnuQ Ceelo Green sings the moon phases!
http://www.youtube.com/watch?v=c4zpRmUdu7I A rock song you may like
http://www.youtube.com/watch?v=79M2lSVZiY4 A rap song you may like!