The Motion and Design unit combines the physics of forces and motion with technological design. Students use plastic construction materials, weights, rubber bands, and propellers to design and build vehicles, then test how those vehicles respond to different forces of motion, like pushes, pulls, or rubber band energy. They explore, through experiments and multiple trials, how forces like friction, gravity, and air resistance work against motion to slow their vehicles down. Students must apply the concepts they learn to a design challenge, designing a vehicle that can perform to certain specifications, but also meets certain “cost” requirements. Collaboratively, student teams must design a vehicle, calculate the cost, test it, and refine their design. This unit develops skills in recording design through drawing, make accurate measurements, completing and analyzing data tables, making and testing predictions, and communicating results and experimental data.