Updated COVID Protocols

 Face masks are required in all indoor facilities regardless of vaccination status. Effective January 1, 2022, proof of vaccination will be required for students, employees and visitors. Visit dccc.edu/coronavirus for additional information.

Delaware County Community College, Serving Delaware and Chester Counties

Arnold Barr

Photo of Arnold Barr

Adjunct Instructor
Science, Technology, Engineering & Mathematics

Contact Information

901 South Media Line Road
Media, PA 19063-1094
Room Number: 3400
Phone: (610) 355-7150

Contact Faculty


  • MSEd
  • BS Physics

Theoretical Approach, Experience, and Temperament

Learning is the replacement of one relationship structure with another. Let’s talk about Newton’s Second Law. What really changes the student is when she can articulate how this law uncovers new ways to view what had once seemed so obvious. Even more importantly, these relationships may become models for understanding larger questions. For example mass and inertia might become models for social inertia.