Unwinding the Mystery of Surface Area of a Sphere for Geometry Students

How do you present the formula for the surface area of a sphere to geometry students with integrity? A rigorous proof requires calculus. Do you just say "trust me?" This burst will present a hands-on activity where students can discover the formula for the surface area of a sphere with three different representations.

8 to 10

Building on Students’ Strengths: Practices That Challenge, Engage, and Empower