Description: Lessons 6 and 7 introduce students to metric weight measured in kilograms and grams. Students learn to use digital scales as they explore these weights. In Lesson 8, students use scales to measure the weight of objects precisely, and then use those measurements to solve one-step word problems with like units. Word problems require students to add, subtract, multiply, and divide. Students apply estimation skills from Lesson 7 to reason about their solutions. In Lessons 9 and 10, students measure liquid volume in liters using beakers and the vertical number line. Lesson 11 presents students with mixed practice, requiring students to add, subtract, multiply, and divide to find solutions to problems involving grams, kilograms, liters, and milliliters.*Teacher Advisor is 100% free.