This article traces the development of the constructivist theory of teaching and learning, overviews the research that links technology to constructivism and highlights some of the teaching and learning tools, systems and models that are successfully using technology to develop learners' thinking and understanding. Constructivist viewpoints represent a range of thinking on different dynamics, s...

tool for controlling juvenile offenders; however, little attention has been paid to the programs that need to be linked with them. In this bulletin, we describe a systematic approach to developing practice guidelines from the large body of outcome research on delinquency programs and using this knowledge to evaluate and improve routine programs spanning the continuum from prevention to treatmen...