Due to the hands-on nature of this program, registration is required. Please note that advance registration guarantees an available slot. Drop-ins may be allowed if space is available. Tweens may bring a sibling or a friend (also in grades 3-6). Tweens younger than ten must have an adult join them. Ages 10 and up may be in the library without an adult. Parents or caregivers may attend if interested, but are not required to attend. There is a maximum of three participants, including the adult.