To determine whether teaching an introductory physics course with a traditional lecture style or with Just-in-Time teaching a student-centered, interactive-engagement style will help students to better understand Newtonian concepts, such as Newton’s Third Law, 222 students in introductory physics courses taught by traditional lecture styles and Just-in-Time teaching at North Georgia College & State University over the span of five semesters were examined using the Force Concept Inventory as a pretest and a post-test