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
Pascal coloring and modular math
In this activity students have the ...
Triple Crown hopefuls at the Preakness
Credit: AP Photo/Garry Jones Saturday, ...
Happy Birthday Statue of Liberty
Friday is the Statue of Liberty's 125th birt...
Summer Solstice, the longest day
Sunrise on summer solstice at S...
April's calf was born!
At about 10:00 am, April 15th, April's calf ...
Nobel Prizes
The Nobel Prizes have just been awarded. This is...
Labor Day
This activity has been updated: https://www.yummym...
Giant chocolate bunnies
What can you deduce about these bunnies f...
Wanna work for Uber?
I received two ads for working for U...
That's a big tomato!
These Aussi tomatoes (the tomato on the left o...