The scientific question is an interesting one, but this activity is basic, quick, and the results can be difficult to see without a video recording. Recording the activity and viewing it in slow motion, allows you to see the weightlessness of the clips when the rubber band returns to a round shape. Instead of clothespins, paper clips or binder clips will work as well. The site provides a basic idea of what the science of weightlessness means, but this activity would be better if paired with a video description or illustrated visual because concept may be difficult for kids to imagine.