This experiment uses student participation to teach the concept of diminishing marginal returns. Students are told they will be the employees in a widget factory. This game works equally well in small classes (less than 30 students) and also large lectures (more than 250 students). You will need enough space to place the buckets 16-20 feet apart. If you do not have a large room, you may want to complete the activity in the hallway, outside or in the gym.

VIDEOS

 

LESSON RESOURCES

 

MATERIALS LIST

  • 24-36 tennis balls
  • 2 five-gallon buckets
  • Whiteboard or other method for recording results

 

LESSON THEMES

  • This lesson should be used during the Economics Unit and/or before Market Day.

 

Collection Contents

Tennis Ball Factory - Intro

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Explore Tennis Ball Factory, a hands-on activity that engages your students in entrepreneurial learning.
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Tennis Ball Factory - Set-up

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Watch how to set-up and prepare Tennis Ball Factory for your students.
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Tennis Ball Factory - Activity

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See Tennis Ball Factory in action, and get tips to implement in your classroom.
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Tennis Ball Factory - Debrief

by Youth Entrepreneurs

Uncover the Foundational Values in Tennis Ball Factory, and how our students can take their learning beyond the classroom.
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Tennis Ball Factory Activity Guide
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Candy Bar & Marg Utility Supplemental
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Tennis Ball Factory Ex. Spreadsheet
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