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News Bulletin April 23, 2010
ASPIRA Mirta Ramirez
Computer Science Charter School
Surface Area of a Sphere
The students of Ms. Gaj's class recently learned how to develop the formula for finding the surface of a sphere through an activity prepared by Lucia Cruz, a clinical student from Northeastern Illinois University. Each student was given an orange cut in half. Lucia asked them to trace a half of it five or six time on a sheet of paper. After that students were challenged to peel their orange and see how many circles they would cover with the peel. If they did it without overlapping peel or uncovered places, they were able to discover that the surface area of a sphere (a peel of an orange) = 4 times the area of a circle.
SA=4πrē
Students not only enjoyed the project through which they discovered the new formula, but also they were allowed to eat their oranges as a reward for completion of the task. The project was fun and oranges delicious!!!
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