The American Psychological Association's "Learner-Centered Principles" provide empirically-based approaches to improving teaching and learning. However, in order to facilitate learner-centered, technology-rich instruction to K-12 students, teachers must be afforded opportunities to develop key understandings and skills, rarely evident in most…

In recent years, educational technologists have advanced the construct Technological and Pedagogical Content Knowledge (TPACK) to describe teachers' knowledge related to effectively integrating technology. In this paper, I use the TPACK framework to examine elementary school teachers' experience in a year-long professional development program,…

Digital video is used to capture and assess a wide range of everyday classroom teaching practices. Generally, these applications are informal in nature and considered either risk-free or risk-neutral by teachers. Increasingly, however, captured video can be scrutinized and assessed by "others" to determine the presence and/or quality of specific…

InterMath participants spend time in workshops exploring technology-rich mathematical investigations and completing write-ups. These write-ups include a written explanation of their problem solving process, screen captures of files that they generated while completing the investigation and links to these files. This paper examines the use of…