“Dave Dinaso’s Traveling World of Reptiles.” 11 a.m., Blackstone Library, 4904 S. Lake Park Ave., 312-747-0511, chicagopubliclibrary.org. Interactive program about reptiles and amphibians.
Family Program. “Junior Archaeologists.” 1:30-3:30 p.m., Oriental Institute, 1155 E. 58th St., 773-702-9507, oi.uchicago.edu, $18 general ($9 additional registrant), $10 members ($5 additional registrant). Participate in a simulated excavation site. Children must be accompanied by an adult. Required registration at oi.uchicago.edu/order/classes.
Lakefront Safety Class. 3-4 p.m., 57th Street Beach, 5700 S. Lake Shore Dr. City of Chicago Fire Commissioner Jose A. Santiago presents a class on water and boating safety.