Biology

Self-Healing Concrete

Typically we think that the wear and tear of automobiles on the roads causes concrete roads to deteriorate, eventually causing potholes and requiring the use of patching. Regular maintenance, like patching, gets expensive over time. If we were to zoom in on a microscopic level we’d see microscopic cracks that allow in water, salts, and ice. Since ice has the ability to expand, the tiny little cracks will become big noticeable cracks.

AMTA

AMTA

The American Modeling Teachers Association (AMTA) website is the official source for information on Modeling InstructionTM (MI).  Whether you are an experienced Modeler or simply interested in learning more about MI, I encourage you to visit the newly redesigned site and check out the available resources.

KWIPPED

KWIPPED

KWIPPED is a highly efficient, no-cost resource for chemistry teachers looking to rent equipment for projects. If you need to source equipment that is too expensive to buy, KWIPPED.com is a great way to find short or long-term rentals that will fit your budget. 

MOSART Tests

The MOSART tests are designed to measure understanding of science concepts. The name, MOSART, stands for:

Misconceptions-Oriented Standards-based Assessment Resources for Teachers

 

Beyond Benign

Environmental studies can be included in any science curriculum.  Whether you are looking for lessons to incorporate ideas related to "green chemistry" or you are looking to use safer methods and materials in the laboratory, you will find many great resources at this site.  There are new labs and also replacement labs for some of those familar activities that we shouldn't b

Life's Ratchet: How Molecular Machines Extract Order From Chaos

Peter Hoffman is a physicist and materials scientist, and he brings those perspectives and sensibilities to the description of how life converts chemical energy into order and motion.  The "Ratchet" in the title is Feynman's Ratchet, a gedanken experiment described in Feynman's "Lectures on Physics" and reminiscent of Maxwell's Demon.

Flights of Fancy

One cold morning last week, as I was out to pick up our newspapers, a group of perhaps 250 starlings took off from a neighbor's trees, rose as a mass, wheeled a couple of circles in the air over the trees and settled in other trees nearby. There were no predators in evidence, so iIt was not clear what made them fly or how they decided when and where to land.