In 1736, Leonhard Euler was trying to find a way to cross every single one of the seven bridges of Königsberg exactly once. He realized that this was, in fact, impossible and based on that, he created a new area of mathematics called Graph Theory [more: https://t.co/ILq5COZVYT]
The Cistercian monks invented this numbering system in the 13 century. This system means that any number from 1 to 9999 can be written using a single symbol! #mathtwitter#mathchat#Mathematics
URGENT: STAY HOME, NYC! If you are well, stay home. If you are mildly ill, stay home. Do not seek #COVID19 testing. A positive test will not change what a doctor tells you to do to get better. The best course of action is to stay at home.
"It is essential that our work have the greatest possible impact on students while still enabling us to conserve our energy."
—Middle school principal @MattHowell_11
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