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
U. S. Open Tennis Tournament prizes have been awarded
The U.S. Open Tennis Tournament has just been comp...
The greatest amount of chocolate
In this updated activity, students compare t...
Which gasoline is the cheapest?
When Brian traveled to ...
Cookie Calculations
In this activity, student...
Stacking Jack
Act One: Check out the video slide show. &nb...
What is Artemis 1 and when will it launch?
Credit: (NASA/Joel Kowsky)
50 years...
Civil rights marches, how do you count a crowd?
On October 16, 1995,&n...
Valentine's Cardioid
WojciechSwiderski at the Polish l...
Man paid in 500 pounds of greasy pennies!
A man from Georgia, Andreas ...
Guacamole for Cinco de Mayo
Cinco de Mayo (May 5th) is an annual celebration...