"Mathematics is a more powerful instrument of knowledge than any other that has been bequeathed to us by human agency." (René Descartes, French philosopher, mathematician, scientist, and writer; 1596–1650.) Dynabook: A Digital Resource for Preservice Mathematics Teachers http://www.ctl.sri.com/projects/displayProject.jsp?Nick=dynabook Jeremy Roschelle, John Brecht, Jennifer Knudsen, Teresa Lara-Meloy, Charles Patton, Ken Rafanan,Patti Schank, Anna Werner This project is … [Read more...]