Primary tabs Upcoming List Month Week Day Add To My Calendar Print Share Age Group: Children, Tweens Please note you are looking at an event that has already happened. Registration for this event is no longer open. Allowed Grades: 3rd Grade to 6th Grade Program Description Event Details Build, create, and learn with some fun STEM activities using marshmallows! For kids entering grades 3 through 6. Space is limited and registration is required.