Have you been on a seesaw or teeter-totter when the weight on one side was heavier than the weight on the other side? What did you do to balance the weight on the seesaw? In this chapter's first activity, you will make a simple balance scale, similar to a seesaw, to compare the masses of different coins.

In this chapter you will learn: how to use the Distributive Property how to write and solve equations how to write, solve, and graph inequalities how to solve a problem by Try, Test, Revise