Florida B.E.S.T. MA.6.GR.2.4
The Standard
Given a mathematical or real-world context, find the surface area of right rectangular prisms and right rectangular pyramids using the figure’s net.
Florida B.E.S.T. Standards for Mathematics
Teacher's field guide
What This Standard Means
What Students Need to Do
- Students read a net and identify every rectangular or triangular face. They find each face area, then add the areas to get total surface area in square units.
What Mastery Looks Like
- Students label each face, calculate its area, and add all face areas accurately. They group congruent faces when useful and include correct square units.
Common Misconceptions
- Students may leave out a face, count a face twice, or find volume instead of surface area. For pyramids, they may use the vertical height instead of each triangle’s height. They may also assume all four triangles have equal areas.
How to Assess It
- Exit ticket: A prism net has two 5×3, two 5×2, and two 3×2 rectangles. Find its total surface area and show the area of every face.
Lesson moves
Ways to Teach It
Give pairs cardstock nets to cut, fold, label, and color before finding each face area and the total surface area.
Ask students to explain when pyramid triangles can be grouped and when their areas must be calculated separately.
Run a Net Match card sort using net diagrams, face-area expressions, and total surface areas.
Have students calculate the cardboard needed for a cereal box and a pyramid-shaped gift package using labeled nets.
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Printable MA.6.GR.2.4 Worksheet
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Solve mathematical and real-world problems involving the surface area of three-dimensional figures limited to cylinders, pyramids, prisms, cones and spheres.
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