Recent papers document that student problem-solving competence varies (often strongly) with representational format, and that there are significant differences between the effects that traditional and reform-based...
LichenLand offers a way to learn about lichen biology and taxonomy that's much more engaging than leafing through a textbook. This Web site, provided by Oregon State University, offers a number of features to help...
This site by Jon Kahl of the University of Wisconsin-Milwaukee provides an explanation of the popular photograph of the sun making an analemma (figure eight shape) taken by Dennis di Cicco. For the image shown, the...
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