In the winter of 2000, a class of K-8 preservice teachers were introduced to "TesselMania! Deluxe," a software product that visually and manually engages students in the study of transformations but, more specifically, tessellations. Prior to discussing the topic of transformations, students were only slightly familiar with two types of…

Technology can be useful in physics classrooms, though teachers must be careful not to let technology remove students from first-hand experiences with nature through observation and experimentation. The paper examines how to enhance physics instruction using computers as graphing tools, for data collection, and as real-world simulators. (SM)