The formula for the Surface Ares of a sphere is 4 x Pi radius squared (4πr2)
For this activity we had to cut an orange in half, which created 2 hemispheres. We then had to peel off the outside, and place the orange peels into the traced circles. This then showed us that 4 circles can be filled which gave us the formula. I learned a new formula, and thought this was a super fun way to discover new formulas and learn how to calculate the Surface Area of a sphere.