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
Cubs bury curse !
Wow! It's been a long time comin...
Largest coffee, new world record
The world record for the largest cup of co...
Would you rather $10,000 a week vs $10 million at once?
In this updated activity, students e...
The huge costs behind the Olympics
Hosting the Olympic Games is extremely expen...
Fidget spinners - fad or lasting trend?
Do you recognize what these are? Are you...
Fantasy Football
In the midst of another NFL sea...
Holiday Shipping
Now that the holiday shopping season has beg...
President's Pay for Presidents' Day
You can't run for President now...
Powerball, Mega Millions, and probability
Updated! See the new post by searching "Mega...
Stock Market headlines - Biggest losses since 2008
This year the Dow Jones Industrial Average m...