Next Monday, March 14, is both Pi Day and the International Day of Mathematics! This thread contains many free resources from Mathigon which you can use to celebrate this wonderful day. #PiDay @idm314 🧵
At math.fit/pi-digits, you can browse the first ONE MILLION digits of Pi. Can you find your birthday? Can you find 31422?
Mathematicians believe the digits 0-9 appear randomly in Pi. Visit mathigon.org/course/circles to explore the distribution of the dgits 0-9 in the first 100 digits of pi. What patterns do you notice?
Rearranging a circle into wedges and rings can be useful in proving the formula for the area of a circle. Try for yourself at math.fit/circle-area
How many squares with a side length equal to the radius are needed to fill up a circle? Have you thought about the value of pi in squares or other regular polygons? Explore all these ideas at mathigon.org/task/pi-in-squ… 
Measuring angles using radians can be helpful when working with objects that move along a circular path. Explore the speed of the international space station at mathigon.org/course/circles…
Circumscribing and inscribing a regular hexagon with a circle can estimate pi. How close can you get with other regular polygons? View this example at polypad.org/l79lMkC8cYP3Iw
A regular hexagon can be constructed using 7 circles. Learn more about constructing regular polygons at mathigon.org/task/geometric…
What other ideas do you have for celebrate this wonderful day? Please share!
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