- The document describes a classroom activity where students work in groups to research and build small roller coasters made of Styrofoam tubing.
- Each student is assigned an expert role related to forces and motion - kinematics, Newtonian physics, applied forces, or energy. They research their topic and share findings with their group.
- Groups then collaborate to design a blueprint for their roller coaster and build it, applying what they've learned. They present their coaster to the class, explaining the forces on a marble riding through it.