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Experimental Evaluation Of A Scale-Up Model For Teaching Mathematics With Trajectories And Technologies, Julie Sarama, Douglas H. Clements, Mary E. Spitler, Alissa A. Lange
Experimental Evaluation Of A Scale-Up Model For Teaching Mathematics With Trajectories And Technologies, Julie Sarama, Douglas H. Clements, Mary E. Spitler, Alissa A. Lange
Alissa A. Lange
Although the successes of some research-based educational practices have been documented, equally recognized is the “deep, systemic incapacity of U.S. schools, and the practitioners who work in them, to develop, incorporate, and extend new ideas about teaching and learning in anything but a small fraction of schools and classrooms” {Elmore, 1996 #1859, p. 1; see also \Berends, 2001 #1856; Cuban, 2001 #2085; Tyack, 1992 #1548}. There may be no more challenging educational and theoretical issue than scaling up educational programs across a large number of diverse populations and contexts in the early childhood system in the U.S., avoiding the dilution …