Standard: 1-PS2-1: Plan and conduct an investigation to provide evidence of the effects of balanced and unbalanced forces on the
motion of an object.
Grade Level: 4th grade
DCI: Each force acts on one particular object and has both strength and a direction. An object at rest typically has multiple forces acting on it but they add to give zero net force on the object. (UE.PS2A.a). Forces that do not sum to zero can cause changes in the
object’s speed or direction of motion. (UE.PS2A.b).
Students are using the game and the marble activity to play and investigate how height, speed, and distance all combine and effect one another.