Instructional Video

How Infinity Explains the Finite

Curated and Reviewed by Lesson Planet

Using infinity to prove a sequence is finite sounds counter-intuitive, doesn't it? Scholar learn about hereditary base notation and the Goodstein sequence. They discover that proving the Goodstein sequence is finite requires infinite ordinals.

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Instructional Ideas
  • Have each class member create their own Goodstein sequence
Classroom Considerations
  • References information from the "Kill the Mathematical Hydra" video
  • Pupils should understand how to write numbers in base notation
  • This video is hosted on YouTube
Pros
  • Shows step-by-step calculations 
  • Color coding helps with understanding
Cons
  • None