The 11 lessons in this topic include these concepts:
defining variables and algebraic expressions
evaluating expressions using multiple variables, rational expressions and exponents
translating word problems into algebraic expressions, and solving these problems using formulas and/or the associative, commutative and distributive properties of real numbers, the equality properties of reflexive, symmetric, and transitive, and the multiplication property of -1
define counterexample and determine if statements are always true, sometimes true or never true