Understanding mathematics notation is, well, essential to understanding mathematics. The material here discusses what we mean by the concept of an expression, and how one reads an expression in order to evaluate it. We will center on the concepts of operators and operands and look at expressions as if they were animated in our imagination. A few Flash animations are presented in an effort to get these ideas across.Precedence is covered here, and usually students learn that quite early in their study of mathematics. Often,though, a person is not exposed to the concept of interpreting a math expression in terms of its operators and operands.At any rate, it is suggested that you start with the first link and work your way down through the list of others.