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
Giant beach towel
Beaches are starting to open again. Bring summ...
Huge Alaskan Vegetables
The annual Alaskan State Fair has just been comp...
Parabolic Pee
Mr. Mark's new little baby can make some amazing...
Macy’s Star Rewards Points
Wow! Check out this deal at Macy'...
Extra point or 2-point conversion - Updated
In 2015 the NFL changed the extra point kick...
Winter Solstice 2023
It is really dark out now. Why is that? Stud...
How much should you spend on this sale?
This activity can be used in a large range of grad...
What is with this chart?
A fellow teacher, Laura Deschai...
Bowling Deals
Is there a general way to figure how much it...
Flag Art
A little ratio art might be a fun way to get r...