Forget the overheads and film strips shown to passive students in yesteryear. Todays technology can engage students directly in doing mathematics, support the learning of concepts, offer customized instruction and tutoring, and leave a trail of data to gauge impact. Here, we highlight two technologies whose initial development was funded by NSF in the 1990s. Both SimCalc and Cognitive Tutors have since been commercialized and their use in school districts has been studied in terms of student progress and results. To give some perspective on technology and how it can, under specific conditions, help students succeed at math are Ken Koedinger, professor of human-computer interaction and psychology at Carnegie Mellon University and Jeremy Roschelle, director of the Center for Technology in Learning at SRI International.
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