In this lesson students explore the force of gravity by testing gravity's pull with parachutes. The students will investigate the idea of gravity pulling objects to the ground unless something holds it up.
In this unit, students explore and explain the many different ways that an object moves and how its properties affect its movements. In one lesson ("In What Ways"), students predict and test their predictions on how different objects will move when gently pushed on their desks. In "Do All Tops Spin Alike?," students use different materials to construct their own tops and test its movements. "Making Objects Move" introduces the concept of acceleration and allows students to use different sizes and types of balls and other materials to build tracks that will be used to stop the ball at a certain location. "Playground Equipment" gives an engineering experience by engaging students in a competition with a given scenario and asking them to design, test, and re-design (if necessary) a functioning piece of new playground equipment (the terms "force," "motion," "gravity," and "simple machine" are introduced).