2. Using the volume formula (FP)

teaches Common Core State Standards CCSS.Math.Content.5.MD.C.5a http://corestandards.org/Math/Content/5/MD/C/5/a
teaches Common Core State Standards CCSS.Math.Content.5.MD.C.5b http://corestandards.org/Math/Content/5/MD/C/5/b
teaches Common Core State Standards CCSS.Math.Practice.MP8 http://corestandards.org/Math/Practice/MP8

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Lesson objective: Find volume and unknown dimensions using volume formula l x w x h.

This lesson helps to build procedural skill with the volume formula l x w x h. Right rectangular prisms are used here because they support understanding the formula. This work develops students' understanding that the volume of a right rectangular prism is equal to the product of its length, width, and height.

Students engage in Mathematical Practice 8 (Look for and express regularity in repeated reasoning) as they compute the volume of right rectangular prisms by applying a generalized formula.

Key vocabulary:

• expression
• formula
• volume

Special materials needed:

• isometric dot paper
• unit cubes
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