2023-11-20 09:44:30
Green, green river
Green, green river
During the St. Patrick's Day parade in Chicago, the local plumbers union dyes the Chicago River emerald green.
Students learn what PPM (parts per million) means and attempt to figure out how much dye is used to sufficiently color the river.
Comments (0)
Display 1 - 10 Of total 0
David Price, big bucks per ...
David Price, a 30-year old pitcher from To...
Fantastic Beasts - What did it cost to make?
In 2001, J.K.Rowling (the author of the Harry ...
How hard it is to pick the perfect bracket? (Updated)
Updated (2026)! Games have begun and there ha...
Expensive face creams
Who knew that creams for your face could be so e...
Women's World Cup - How many matches are left?
The first round of Group play has finished a...
Lifespan of a meme, the Harlem Shake
Five friends who skateboard and...
Happy 14th B'ak'tun!
Luckily, we’ve passed 12/21/2012 and the...
New Mega Millions (probability)
In this activity, students apply their u...
I need help raking my leaves
Brian has spent too much time thinking about his l...
Typhoon Rasaga
What is a typhoon, and how are they measured? In t...