How much leather is needed to make a basketball? Prepare individuals to answer questions like these by watching a video lesson. The instructor in the video completes three examples that use the surface area of spheres formula. 

Concepts

surface area, spheres, solids, formulas, quadratic equations

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Additional Tags

math

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Instructional Ideas

• Have pupils peel an orange to compare their calculations to the area of the peel
• Give your classes the formula for surface area of spheres and ask them to do the calculations in the video; have them watch the video as a check

Classroom Considerations

• If asking learners to watch the video independently, ensure Internet access is available
• The 36th installment in a series of 40 lessons

• This video is hosted on YouTube

Pros

• Each example asks pupils to use the formula to find a different measurement

Cons

• The video is not very engaging

Common Core

7.G.B.6