Saffron and paella
In order to cook Paella (a delicious Spanish rice dish) I needed to buy Saffron spice. It was hugely expensive. So, I've decided to start a business of growing saffron and becoming immen...
Algebra
Genres
Grade
The growth of Godzilla
Image from Kris Holt: http://www.policymic.com/articles/76357/the-scary-way-godzilla-has-evolved-through-the-years-in-one-chart
The new Godzilla movie is out at theaters. ...
Cost of light bulbs - updated!
Algebra
Number Sense
Math and Science
Math and Social Studies
Ratio and Proportion
Data and probability
There's a lot of misinformation out there about the cost to consumers of CFL and LED bulbs and the savings in energy and money that could be realized.
Let your students "do the math" and realiz...
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 ...
Bits, bytes, and nibbles
Clicking on the image will show it larger.
I'm not very good at understanding how large my device capacities are and how big the files that I want to download are in comparison. I decid...
Raising the bar
Recovery of the treasure from the 1941 sinking of the S.S. Gairsoppa was recently completed and a huge amount of silver was brought up from the ocean floor. Let your students get a fe...
Crop circles
In the travel section of our newspaper this week, Wiltshire, England was a recommended destination to see Stonehendge and crop circles ........... crop circles?
Many of the ...
Methane math
Updated! Carbon dioxide and methane are our two most prevalent human-contributed greenhouse gases. This holstein cow is one of many huge contributors to our methane production. &nb...
My teacher says this stream is parabolic. Is he correct?
Instead of asking students to just believe what you've said, why not ask them to verify your assertions? Students plot the points of the stream, perhaps map them with an equation generated b...
Ladder figuring
Brian can't even go to his town's spring festival without seeing math.
Let your class approximate the height or length of this ladder by using the relative size of the cars or the p...