LEAP Into Science! Introduce your child to simple science concepts. Stories, followed by hands-on activity stations designed for children ages 3-1/2 to 5 and their caregivers to experience and explore together. Share the excitement of discovery with your child! The LEAP into Science program began in 2007 as a partnership between The Franklin Institute and the Free Library of Philadelphia. It’s a fun program designed to engage children ages 3-1/2 to 5 and their families in science and literacy by integrating hands-on science activities with children's literature. Drop in.