Another favorite, "I've been Working on the Railroad", this song can be used to introduce or reinforce the concept of function, including the vertical line test.

You can listen to a clip of this, and all the other math songs. You can also buy the songs in bulk. Please email us if you would like the lyric sheet at no extra charge

Function Song by Math Song is licensed under a Creative Commons Attribution-NonCommercial-ShareAlike 3.0 Unported License.