2, Lesson 11, Unit 5, Grade 8, EngageNY icon
Instructional Activity


Lesson 11. Unit 5. Grade 8 EngageNY

EngageNY10 min(s)

This Instructional Activity is a part of the Lesson 11, Unit 5, Grade 8. Show students pictures of the spheres shown below (or use real objects). Ask the class to come up with a mathematical definition on their own. Finally, we come to the volume of a sphere of radius r. First recall that a sphere of radius r is the set of all the points in three-dimensional space of distance r from a fixed point, called the center of the sphere. So a sphere is, by definition, a surface, or a two-dimensional object.

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