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McDonalds moves towards antibiotic-free chicken

Number Sense Geometry Math and Science Math and Food Ratio and Proportion
   Recently McDonald's announced that by 2016 they will use only chicken raised without the antibiotics that are used in human medicine.  McDonald's plans to join Chick-fil-A, Pa...

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

Algebra Number Sense Math and Science Ratio and Proportion
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...

Cruising

Algebra Number Sense Math and Science Math and Food Ratio and Proportion Data and probability
There have been a lot of cruise ship mishaps and disasters this year. While these are in the news, let your students consider how these floating cities manage their resources and which of their need...

Happy 14th B'ak'tun!

Number Sense Math and Science Math and Social Studies
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...
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