A wooden frame with gussets provides for strength and hydraulic or pneumatic power transfer in the operation of the dumpster. This product is part of KELVIN®'s Engineering Principles Series. This series is comprised of a group of activities that focus on one or more engineering or scientific principles. Products are made from light, rigid cardstock, or a combination of cardstock and other hardware, such a gears, motors and wheels. In assembling the kits, children learn about the basics of working with paper (cutting, bending, paper strength and fastening) as well as the engineering principle associated with the product. This series offers a range of learning experiences for a range of students.
