Resumen de The estimation calculator
Peter T. Malcolm, Robert Q. Berry, Spencer Jamieson (ed. lit.), Patricia W. Freeman (ed. lit.), Courtney Baker (ed. lit.)
Technology from the Classroom is the venue for sharing articles that illustrate the effective use of technology in pre-K-grade 6 mathematics classrooms. Online extra: http://nctm.org/uploadedFiles/Journals_and_Books/TCM/articles/2011-Vol18/Extras-2011-Vol18/tcm2011-09-119z1.pdf
