Technology and differential equations / John Hubbard -- Sometimes less is more: examples of student-centered technology as boundary objects in differential equations / Karen Keene, Chris Rasmussen -- "Click, drag, think!": posing and exploring conjectures with dynamic geometry software / Thomas Gawlick -- Dynamical mathematical software: tools for learning and for research / Samer Habre -- Nonlinear is essential, linearization is not enough, visualization is absolutely necessary / Beverly West -- Vectors and differential equations: a visual approach using Autograph / Douglas Butler -- Interactive applets in calculus and engineering courses / Heidi Burgiel, Chad Lieberman, Haynes Miller, Karen Willcox -- Applets for mathematical learning / Robert Terrell -- Dynamical software and the derivative concept / Ljubica Dikovic -- Supporting the development of college-level students' conceptions of statistical inference / Maria Meletiou-Mavrotheris -- Coping with infinity: using TI-NspireTM CAS to bring alive multiple representations in mathematics / Bjørn Felsager -- String art and linear iterative systems / Samer Habre.