3-PS2-2 Make observations and/or measurements of an object’s motion to provide evidence that a pattern can be used to predict future motion.
Clarification Statement: Examples of motion with a predictable pattern could include a child swinging in a swing, a ball rolling back and forth in a bowl, and two children on a see-saw.
Assessment Boundary: Assessment does not include technical terms such as period and frequency.
This resource appears to be designed to build towards this performance expectation, though the resource developer has not explicitly stated so.
Comments about Including the Performance Expectation
In the anticipatory set, an awareness should develop that if the amount of force applied remains constant, the distance an object travels is contingent upon its mass. The effects of friction on the motion of these objects could also be tested. The amount of force applied is a variable that is difficult to control but provides for a teachable moment about the how variables in an investigation affect its outcome. Having the students blow through a straw is suggested to mitigate some the health concerns as a result of students blowing aggressively. Using a device such as a nasal nose aspirator would also address health concerns as well as provide some control with the amount of force applied. With these suggestions implemented, a pattern of observation and measurement should emerge as they proceed through the trials, and predictions about the future motion of objects should become increasingly accurate. Patterns in the observations and measurements can then be easily made explicit through a facilitated discussion.