Thinking about actions to take: Force Pairs Replace Interactions
Teaching Guidance for 14-16
There's a good chance you could improve your teaching if you were to:
- using interaction diagrams
- connecting the study of Newton's third law to earlier understanding of Newton's second law
Work through the Physics Narrative to find these lines of thinking worked out and then look in the Teaching Approaches for some examples of activities.
- presenting the law as obvious
- presenting the Newton three pair of forces as both acting on one object
These difficulties are distilled from: the research findings; the practice of well-connected teachers with expertise; issues intrinsic to representing the physics well.