This is another great game to use during a lesson. This could be used to first identifiy the less than and greater than signs and what they mean. This would also help for students to recognize numbers.
This is a board I made while teaching fractions to my 4th graders. They loved finding equivalent fractions by "drawing" a line down from the end of a bar and seeing where it intercepts (e.g., 1/2 intercepts with 2/4, 3/6, etc. so they're equivalent). Pretty easy to make - just construction paper glued together.