Tree Frog Treks. Wild Science! Your kids will have an engaging evening full of science experiments, art projects and hands-on time with our live Animal Ambassadors! We'll also eat a pizza dinner and watch a movie related to our weekly theme! Every Saturday night - 5:30-9:00 p.m. Location: Frog Hall, 2114 Hayes Street, San Francisco. www.treefrogtreks.com (415)876-3764