How do you introduce fields (electric, magnetic, gravitational) in your courses? What is your go-to activity to introduce this notoriously challenging topic in your classes?

The OPTYCs PER-Interest Group hosted the first interactive sharing session of 2024 on this topic. We started with a brief review of what PER says about the topic, followed by a discussion of some of the popular choices for interactive simulations such as PhET, The Physics Classroom and Web VPython. Participants shared their favorite activities on the subject.