MAST II extends the knowledge of teachers in grades 3-8 who have previously received professional development in using classroom technologies in mathematics and science education. The course strengthens the technology knowledge of these teachers and helps them apply technology to their instruction in restructured, workstation-based classrooms. It provides teachers the opportunity and guidance to design a full rotation of workstations and builds their knowledge of current technologies, including use of the Internet, web pages, probeware, video, and sound. The project also addresses many of the practical problems teachers face in reforming their instruction.