The Physics Education Research Group is engaged in an allied set of projects that broadly support the implementation of Modeling Instruction and promoting the participation of students in physics, science and physics teaching. These projects supported by grants from the National Science Foundation, PhysTEC, QuarkNet, American Association of Physics Teachers, American Physical Society and American Institute of Physics and range from promoting early teaching experiences for physics majors, to building cosmic ray detectors in collaboration with teams of high school teachers and students.