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
Do teams that spend a lot win a lot?
In this activity students compare team wins ...
Cruising
There have been a lot of cruise ship mishaps and...
How hard it is to pick the perfect bracket? (Updated)
Updated (2026)! Games have begun and there ha...
What is a quantum dot?
In this activity, students work through the ...
What's with the plovers?
Cute little birds. Piping plovers are ...
What are the odds that Justify can win the Triple Crown?
Justify has won the Triple Crown. He's...
Lionel Messi, soccer star and influencer
Lionel Messi is possibly the best soccer pla...
The odds of horse race betting
Rich Strike surprised everyone at the Kentucky D...
Consumer spending 2018
Graph from Wolfram Alpha
Consumers in ...
Have a heart
Clicking on the image above will show the hear...