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AbstractThis paper describes a project underway in which teachers are developing three engineering education modules for 7th-8th grade science classrooms. An important component of the modules is an interactive web-based learning environment that provides students with a simulation experience followed by data collection and analysis. The classroom and Web-based learning contexts are combined in the Triangulated Learning Model. The model employs three major components designed to reinforce student learning: Simulation, Construction, and Connections. Student learning begins with a java applet simulation of selected physical science concepts. Throughout the simulation, students are required to collect and analyze data and interpret the results. Students then construct a prototype of their selected project. Through reflection and discussion, they make sense of their learning and connect the construction process to the underlying scientific and mathematical theory and equations resulting in increased conceptual understanding.