Lesson plan

Solve a one-step addition problem involving liquid volume measurement by using a model

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.Practice.MP1 http://corestandards.org/Math/Practice/MP1
teaches Common Core State Standards CCSS.Math.Practice.MP4 http://corestandards.org/Math/Practice/MP4

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Big Ideas: We measure using units of the same size repeatedly. We can add units of liquid volume the same way we can add other quantities. Liquid volume is the amount of liquid a container can hold. This lesson builds on what students know about liquid volume in metric units. They will solve problems that involve addition and use visual representation models in solutions. This lesson builds toward 4th grade skills with using all four operations to solve multi-step word problems about liquid volumes and problems that require expressing measurements given in a larger unit in terms of a smaller unit. Vocabulary: sum, addend, milliliters, liters, combine, graduated cylinder