This NGSS-aligned multimedia collection supports teaching of Newton's Third Law of Motion, a seemingly simple, but often grossly misunderstood concept. It focuses on presenting the Third Law in the context of force pairs.  Appropriate for high school Physical Science, Physics First, and Conceptual Physics courses. 

NGSS Disciplinary Core Idea - Forces and Motion 

MS-PS2-A.1:  For any pair of interacting objects, the force exerted by the first object on the second object is equal in strength to the force that the second object exerts on the first, but in the opposite direction.

Crosscutting Concepts Addressed

  • Cause and Effect
  • Systems and System Models
  • Stability and Change
Science and Engineering Practices Addressed
  • Analyzing and Interpreting Data
  • Designing Solutions
  • Developing and Using Models
  • Planning and Carrying Out Investigations
  • Using Mathematics and Computational Thinking