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
More eruptions on Hawai'i's Kilauea
The Volcano Kilauea is continuing to spew ...
Cookie Calculations
In this activity, student...
Pixar versus DreamWorks (2016 )
This activity has been updated – please see:...
What's wrong with this picture?
We've gotten used to believing what we read or...
Ranked Choice Voting in NYC
New York City is still tallying its election...
Time to make your prom clothes ... with Duck Tape
Larissa Leon, from Texas, in her gorgeous Duc...
Bears Ears revisited
There is some beautiful land in Utah that was ...
Chocolate heart-shaped raspberry cake
For Valentine's Day, bake a cake!
Stude...
Fantasy Football
In the midst of another NFL sea...
Impress your parents at dinner
This activity is the first in our series on me...