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
How did I graph this heart?
In this activity, students...
Daylight savings time
Updated and improved!
Is Daylight savings t...
Big Air snowboarding
Starting February 18th a new Olympic sport will be...
What does 95% confidence in the poll results mean?
There have been a lot of polls about who wil...
December 21, 2020 - Great conjunction
Right now, just after sunset, in the southwe...
Sol LeWitt's pyramid - How might you count those blocks?
Sol LeWitt, Four Sided Pyramid, 1999, H...
Leslie's socially-distanced party
I risked infecting my friends or becoming infect...
Giant Pumpkins (2025)
🎃October is the time of year when giant pumpkin co...
The Power of Leverage
📈 In this activity, students will explore th...
What's my angle?
I'm going to help save the planet by adding so...