A long-awaited federal study of reading and math software found no significant differences in standardized-test scores between students who used the technology in their classrooms and those who used other methods. The study compared classes overseen by teachers who used the technology-based products with those of other teachers who used different…

Computer software that shows students visual models of mathematical concepts--and lets them manipulate those models by doing math--has a certain intuitive appeal. Now, recent research on SimCalc Mathworlds, one of the pioneering examples of such software, is providing some of the best evidence so far that the approach can lead to gains in student…