An exciting hands-on challenge to students that encourages individual solutions to problems in constructing the most efficient racer. Class pack includes the following parts for 12 students: • Mousetrap (power) • Die-cut plywood chassis and body parts • Die-cut plywood wheels • Die-cut balsa tires • Rubber bands (tire treads) • Dowels (axles) • String (transmission) • Brass eyelets (axle bearings) Plus instruction sheets and teacher’s manual.