RT @CasioEducate: #EarthDay is April 22nd. Share with us how you use #math or #science to better the #environment! https://t.co/eLA9k1rpiS - The Calculator Guide from Twitter

#EarthDay is April 22nd. Share with us how you use #math or #science to better the #environment! pic.twitter.com/eLA9k1rpiS

— Casio Education (@CasioEducate) April 13, 2018

from Twitter https://twitter.com/GuideCalculator

April 13, 2018 at 03:37PM
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