Lesson plan

6. Develop and use the area formulas for parallelograms and trapezoids (FP)

teaches Common Core State Standards CCSS.Math.Content.6.EE.A.2c http://corestandards.org/Math/Content/6/EE/A/2/c
teaches Common Core State Standards CCSS.Math.Content.6.G.A.1 http://corestandards.org/Math/Content/6/G/A/1
teaches Common Core State Standards CCSS.Math.Practice.MP7 http://corestandards.org/Math/Practice/MP7

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Lesson objective: Develop and use the area formula for a parallelogram and trapezoid.

This lesson helps to build procedural skill with finding the area of parallelograms and trapezoids. The use of coordinate grids supports students' budding understanding of geometry in the coordinate plane. This work develops students' understanding that it is possible to find the area of a figure by creating a new region of known or equal parts.

Students engage in Mathematical Practice 7 (Look for and make sense of structure) as they begin to understand the relationships between the two-dimensional figures more completely.

Key vocabulary:

• area
• parallelogram
• trapezoid

Special materials needed:

• coordinate grid