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Building Tetrahedra with Envelopes: A Fun Math Exploration

Explore the creative side of mathematics by constructing tetrahedra using standard letter-size envelopes. Guided by George Thornton's teaching at NWMI, this project involves teamwork and a series of steps to form larger tetrahedra from smaller ones. Put four envelopes together to create a tetrahedron, then combine more sets to construct even larger shapes. This engaging hands-on activity demonstrates concepts of sequences and series while encouraging playful collaboration and problem-solving among participants. Join in the fun and explore the world of geometry!

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Building Tetrahedra with Envelopes: A Fun Math Exploration

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Presentation Transcript

  1. Really Big Math (or) What you can do with 1,054 envelopes and a whole bunch of tape.

  2. Tetrahedra made from standard letter-size envelopes. (Thanks to George Thornton, who taught this at NWMI)

  3. Putfour together to form a larger tetrahedron.

  4. Putfour more together to form an even larger tetrahedron.

  5. Take a moment to be really goofy.

  6. Put four of the last set together to form an even larger tetrahedron.

  7. …do it again.

  8. …and again (with a LOT of teamwork).

  9. And we finally finished!

  10. Tada! (By the way, this culminated a unit on sequences and series.)

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