Lesson plan

# 10. Making sense of problems and using efficient strategies to solve multiplication and division problems with grams, kilograms, and liters (A)

teaches Common Core State Standards CCSS.Math.Content.3.MD.A.2 http://corestandards.org/Math/Content/3/MD/A/2
teaches Common Core State Standards CCSS.Math.Content.3.OA.A.3 http://corestandards.org/Math/Content/3/OA/A/3
teaches Common Core State Standards CCSS.Math.Practice.MP1 http://corestandards.org/Math/Practice/MP1
teaches Common Core State Standards CCSS.Math.Practice.MP7 http://corestandards.org/Math/Practice/MP7

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Lesson objective: Apply strategies to solve word problems involving multiplication and division involving liters, grams, and kilograms.

This lesson provides an opportunity for students to apply their knowledge and understanding of multiplication and division to a real-life situation involving liters, grams, and kilograms. Students are asked to determine if Oliver's thinking is correct about the value of his coins.

Key Concept students will use:

• The relationship between multiplication and division sometimes enables us to choose which operation to use; not all problems are either "multiplication problems" or "division problems."

Skills students will use:

• Exploring equal groups as a foundation for multiplication and division (Grade 3, Unit 1)
• Understanding the relationship between multiplication and division (Grade 3, Unit 7)
• Developing strategies for multiplication and division (Grade 3, Unit 9)

Students engage in Mathematical Practice 2  (Reason abstractly and quantitatively) as they move between real-world scenarios and mathematical representations of those scenarios. Students will see pictures and equations drawn as well as the connection to coins and their values.

Key vocabulary:

• division
• grams (g)
• kilograms (kg)
• liters (L)
• multiplication
• nickel
• quarter

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• 10. Making sense of problems and using efficient strategies to solve multiplication and division problems with grams, kilograms, and liters (A)