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†People who contributed to this paper include John Bransford, Susan Goldman, Nancy Vye, Bob Sherwood, Ted Hasselbring, Jim Pellegrino, Melinda Bray, Teresa Secules, Hank Clark, Carolyn Stalcup, John Czarnic, and Chris Snyder.
We are indebted to the children, teachers, and administration of Jere Baxter and Carter Lawrence Middles Schools in Nashville for their continued time and enthusiasm. This research was supported in part by the Tennessee Space Grant Consortium, the James S. McDonnell Foundation Program in Cognitive Studies for Educational Practice and the National Science Foundation, Grant# ESI-0350510.
Anthony J. Petrosino and Jay A. Pfaffman: Learning Technology Center, Peabody Box 45, Nashville, TN, 37203. firstname.lastname@example.org, email@example.com.