A terrarium is a mini-garden, a beautiful composition of live plants that also demonstrates the main ecological law: "Everything is connected to everything." Children aged 6-9 and their parents are invited to a class on creating their own terrarium. Children and adults will spend time together in an engaging activity, get into a great mood, and gain new knowledge. In this masterclass, participants will learn about the concept of an ecosystem. The instructor will explain how such complexes form in nature, what supports them, and how the exchange of matter and energy occurs within them. Then, each family will assemble their own miniature ecosystem-a terrarium-and take it home. Group gathering starts 20 minutes before the class in the museum lobby; the organizers request not to be late. More details can be found on the official website. Photo provided by the organizer.