Video from the Global Math Project.
And here are some additional answers.
Try It at Home
Ask your kids the question: “What Is Math?”
I’d love to hear what they say!
An extra note from Dr. Grime: “Since pi39 ends in 0, you may think we could use pi38 instead, which has even fewer digits. Unfortunately, the rounding errors of pi38 are ten times larger than the rounding errors of pi39 — more than a hydrogen atom. So that extra decimal place makes a difference, even if it’s 0.”
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From Numberphile: Dr Tony Padilla’s unique (and low budget) twist on the Buffon’s Needle experiment to learn the true value of Pi.
Do you have a favorite family activity for celebrating Pi Day? I’d love to hear it!
I just discovered this fun Pi Day song from The Singing Nerd. Definitely need to add him to my YouTube subscriptions.
Hat tip: Singing Banana.
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From Numberphile: “Sinuosity is a measure of how ‘bendy’ a river is. It is the length of the river divided by the direct route. Featuring Dr. James Grime.”
After posting this video, Dr. Grimes and Lawrence Roberts began collecting and analyzing data about real-world rivers. It turns out the pi theory of sinuosity is too simple. Read about their results: