Today, Tumble is sharing their episode, The Case of the Sparkly Minerals. In this episode, we take a trip to the Field Museum of Natural History in Chicago, where we get special behind-the-scenes tour of their mineral collection. Plus, we learn what makes rocks sparkly. This episode comes with an activity to make your own classification system. We have a step-by-step description and printable guides available on kidslisten.org/kids-activity.