This is a six day unit to teach Third Grade Common Core Math Standard 3.MD.2. In this six day unit, students will learn to estimate and read scales using grams and kilograms, and will learn to read graduated cylinders using milliliters and liters. Next, students will learn to solve word problems involving mass and volume using addition, subtraction, multiplication and division. This unit includes lesson plans for each day with a materials list and focus for students, a student classwork boo