Attention mothers of mine who teach sixth grade: This is a great song to sing with your students for Friday Song.
14 year old Spencer Tweedy, son of Jeff wrote this parody version of Beyoncé's "Single Ladies" for his algebra class. The song very neatly and cleverly covers a few key math concepts like lines, slopes and digits. And it is fantastically catchy.
[via Xeni via Cassandra Jones]