Ebola updated
Ebola has continued to gain strength and devastate regions of West Africa. WHO (World Health Organization) updates their data frequently and the progress and lack of control of...
Math and Science
Genres
Grade
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...
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...
The Blue Marble
Sunday, April 22nd, 2018, is Earth Day. Use this activity to demonstrate the various mappings of our 3-d Earth to a 2-d piece of paper. Students compare maps with this famous photo and check to...
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...
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...
Snow Days
Here is a picture from a recent snowfall at my house. How Much Snow Did I Get?
Have students make an estimate. Ask them for a guess that is probably a little to...
Happy 14th B'ak'tun!
Luckily, we’ve passed 12/21/2012 and the world is still here and we’ve made it into the start of the next Mayan calendar cycle ... the next B’ak’tun.
The ancient Mayans had an interesting...
It sure is cold out ... or is it?
Students ponder the relationship between place latitudes and average January temperatures while they try to discover a correlation. Is this a linear or near linear relationship? … averaging, mis...