Bridges To Burn Or break, actually, as an heuristic exercise. Here"s a classroom-full of bridge-building supplies based on the Illinois Institute of Technology"s national bridge-building contest. * Each kit contains enough balsa wood pieces and glue to supply (24) budding engineers or physics students with what it takes to test their skills at wooden bridge construction. * Includes a 12pp teacher"s guide with info about (6) bridge styles and (8) types of trusses, (24) rules/instruction sheets for students, (360) pieces of 1/8" square x 24" long wood, and (24) bottles of white glue. * Among the most engaging and popular classroom projects in the country, it"s designed for grades 7-12.