Published in Designing for Science: Implications from Everyday Classroom and Professional Science: eds. K. Crowley, C.D. Schunn, and T. Okada. Mahwah, NJ: Lawrence Erlbaum Associates., January 1, 2001, pages 21-49.
Copyright © 2001 Taylor & Francis. This is an electronic version of an article published in Implications from everyday classroom and professional science.