Emily Maclsaac (left), 3, of Dorchester and Quincy Moore, 4, of JP, dig into the “Augmented Reality Sandbox” presented by Science on the Street as part of the ParkSCIENCE Winter Children’s Festival Feb. 20 at Franklin Park. The free school vacation week festival was presented by the Boston Parks and Recreation Department with support from the L.L. Bean Outdoor Discovery School and New England Coffee. Activities included a visit from the L.L.Bean Bootmobile and the New England Aquarium Tidal Pool, and exhibits by Science from Scientists, the Massachusetts Archaeology Education Consortium, the Massachusetts Horticultural Society, Zoo New England, iRobot, Science on the Street, and Boston Children’s Hospital. (Photo by Jon Seamans/Boston Parks Department)