Make your classroom interesting by teaching or assessing through tasks. Deepen the understanding of Geometry and motivate young mathematicians. The task uses investigation with tennis balls and their container to prompt learners to use critical thinking skills.

Concepts

volume, spheres, pythagorean theorem

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Additional Tags

math

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Instructional Ideas

• Have a model or real tennis balls and container to help with the visual effect
• Learners can work in groups to complete the task
• Allow students to use drawing materials to create picture models

Classroom Considerations

• Understanding/review of the volume formula for a sphere is needed
• Discuss Cavalieri's Principle and the Pythagorean Theorem

Pros

• Task oriented 
• Answers/description provided
• Interesting topic

Cons

• Lack of visuals in the task
• Plenty of verbal descriptions for the students

Common Core

HSG-GMD.B.4 HSG-MG.A.1