Kwadwo Osseo-Asare writes: 
While I was on sabbatical at the University of Ghana this year, I used to walk to and from work at the Faculty of Engineering Sciences (Torto Chemistry Building) on the Legon campus. One of the things that struck me was the several huge ant hills along the way. I realized that I had no idea how they were constructed...At the same time, I was thinking about how to convey to my students some of the central concepts of materials science and engineering: processing/structure/properties/behavior. How do you teach the concept of microstructure in an environment without microscopes?
Eventually, I assigned my students a project...[continue reading]
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