# Concepts in Motion

*Animations* are demonstrations of selected Key Concepts and topics from your textbook.

Solve Two-Step Equations

Write and Solve Two-Step Equations

Solve Equations with Variables on Each Side

Problem Solving: Guess and Check

Inequalities

*Interactive Labs* are problem-based learning opportunities that provide additional practice on a variety of topics.

Graphing Equations with Two Variables

*BrainPOPS* are 3- to 5-minute animated movies that provide a clear and concise explanation of a particular topic in an engaging manner.

Two-Step Equations