How many digits of pi would you need to accurately express the circumference of the universe? A mathematician attempts to answer this question in a Numberphile "Pi" video. It turns that only 39 digits are necessary to determine the circumference of the universe that is accurate to a hydrogen atom.
- Team up with an astronomy teacher
- Provide viewers with cloze notes to jot down information
- Learners should be familiar with circumference and pi
- Shows step-by-step work of the results
- Includes some interesting information about the history of finding digits of pi