Do your students struggle with multi-step word problems? This in-depth lesson plan explains how to use a seven-step method of solving multi-step word problems involving conversion of units in both the U.S. Customary System and the Metric System. It includes the Common Core standard (CCSS.Math.Content 4.A.A.3-Operations and Algebraic Thinking-Use the four operations with whole numbers to solve problems), behavioral objective, anticipatory set, final objective, purpose, classroom participation (guided practice includes partners’ paper and answer sheet), independent practice (both classwork and homework; includes answer sheets), check for understanding, closure activity, conversion sheet, pop quiz, and pop quiz answer sheet. Step-by-step instructions are provided on how to teach the lesson.