saturday | 14

Pick-up basketball. For students in grades 3 through 5. Coaches will organize and referee. Snacks included. At Jewish Community Center of San Francisco, 3200 California St. 7 p.m. $20-$25. (415) 292-1200.

wednesday | 18

Free Tay-Sachs screening. Sponsor: Department of Health Services. 11 a.m. to 2 p.m. Feb. 18 and 19; 5:30 to 7:30 p.m. Feb. 19. At Foothill College, 12345 El Monte Road, Los Altos Hills. (510) 889-1775.

sunday | 22

Blood drive. Sponsors: Peninsula Temple Beth El and Blood Centers of the Pacific. At Beth El, 1700 Alameda de las Pulgas, San Mateo. 9 a.m. to 1 p.m. (650) 341-7701.