This hands on workshop will provide tools and ideas on how to develop an investigation which provides evidence that a change in an object’s motion will depend on the mass and the sum of the forces acting on it (SEED 7.1.1). Participants will examine a concept of building a model such as a cardboard sled using simple materials (cardboard, string, duct tape and practical cutting tools) to move various objects ranging from bowling balls to the human body. Participants will learn how to integrate both scientific concepts and mathematical concepts such like investigating a real-world proportional relationship (7.RP).