Lesson plan

# 10. Find surface area of prisms and pyramids (A)

teaches Common Core State Standards CCSS.Math.Content.6.G.A.4 http://corestandards.org/Math/Content/6/G/A/4
teaches Common Core State Standards CCSS.Math.Practice.MP5 http://corestandards.org/Math/Practice/MP5
teaches Common Core State Standards CCSS.Math.Practice.MP6 http://corestandards.org/Math/Practice/MP6

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Lesson objective: Solve a problem involving surface area.

This lesson provides an opportunity for students to apply their knowledge and understanding of surface area to a real-life situation. Students are asked to determine how much poster board a teacher will need to buy for 5 groups of students to each build three different three dimensional figures.

Key Concept students will use:

• Nets of three dimensional figures allow us to see the faces of the figure and how the sum of the area of the faces results in the surface area.

Skills students will use:

• Finding composite area (Grade 6, Unit 10)
• Evaluating expressions at specific values of their variables (Grade 6, Unit 8)
• Multiplying mixed numbers (Grade 5, Unit 5)

Students engage in Mathematical Practice 4 (Model with Mathematics) as they use nets of pyramids and prisms to make connections between two dimensional shapes and three dimensional figures.  Students also engage in Mathematical Practice 7 (Look for and Make Use of Structure) as they decompose nets into shapes that have area formulas to determine surface area.

Key vocabulary:

• area
• net
• square units
• surface area
• three dimensional figure
• two dimensional shape

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• 10. Find surface area of prisms and pyramids (A)