What's with the plovers?
Cute little birds. Piping plovers are nesting on beaches along the Atlantic coast. Consequently beaches are often roped-off or closed to protect their nests and chicks. Is this conservatio...
Number Sense
Genres
Grade
Thank you, mother and father, for all of those diapers
Thank you Mother and Father for all of those diapers
Which is a better deal, cloth or disposable diapers? How much did you cost your parents in diapers? In the future how much could...
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...
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...
Voyager on the edge
The two Voyager space probes are in the news recently as they approach the edge of our solar system. Scientist can tell that the Voyager's environments are changing. They are receiving m...
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...
Fast Growing Plant
This activity/post is a little different than are usual posts. We look at a particular math concept and consider how to use context, models and CCSS math practices to increase stud...