- Comprehend that surface area and volume are two different attributes of three-dimensional objects and are measured in different units.
- Estimate measurements of a prism in a real-world situation, and explain (orally) the estimation strategy.
- Interpret different methods for calculating the surface area of a prism, and evaluate (orally and in writing) their usefulness.
Assemble the net from the blackline master to make a prism with a base in the shape of a plus sign. Make sure to print the blackline master at 100% scale so the dimensions are accurate. This prism will be used for both the warm-up and the following activity.
- I can find and use shortcuts when calculating the surface area of a prism.
- I can picture the net of a prism to help me calculate its surface area.
The surface area of a polyhedron is the number of square units that covers all the faces of the polyhedron, without any gaps or overlaps.
For example, if the faces of a cube each have an area of 9 cm2, then the surface area of the cube is \(6 \boldcdot 9\), or 54 cm2.
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