There's Always Pi! via NASA https://t.co/wcPPerjljX pic.twitter.com/rCDRB157VT
— martinengwicht (@martinengwicht) March 14, 2018
from Twitter https://twitter.com/martinengwicht
learning by doing
There's Always Pi! via NASA https://t.co/wcPPerjljX pic.twitter.com/rCDRB157VT
— martinengwicht (@martinengwicht) March 14, 2018
from Twitter https://twitter.com/martinengwicht