Nearly every person I know was taught the 'greater than' and 'less than' symbols as crocodile mouths (the crocodile wants to eat the larger quantity). Here's a fun game that I put together for my preschoolers (L and E just turned 3) to teach the concept of comparing quantities. I put magnets on the backs of number tiles a couple weeks ago and we've using them for many fun math activities on our magnet board, but I always seem to forget to take pictures. For this game, the magnetic backs are not really necessary, and you could even play with cards that have numbers on them (like Uno). Here are the rules of this simple math game...