It's migration time! The California gray whale is migrating south to Baja California, passing right by great viewing spots along the coast. Every weekend through April, docents will be out at Point Reyes National Seashore Lighthouse Observation Deck from 11:00 a.m. to 4:30 p.m. to answer questions about gray whales. A Journey of the Whales talk will be led by a park ranger on weekends at 1:30 p.m. beginning at the Lighthouse Visitor Center. The half-hour, free program includes information about the gray whale habitat, and adaptations, with some time to search the waters for whales from the observation deck. The park service advises people go prepared for windy, cold and damp weather, and if taking a shuttle from from Drakes Beach, allow an hour of travel time from the beach to the visitor center.

Tinker with Toys! For all those campers who loved becoming toymakers at Camp Galileo last summer, The Tinkering Studio is following the lead by kicking off a month long look at the innovative potential of toys. There are plenty of hand-on opportunities to make a top, a moving sculpture, and to play with mirrors and other toys. The toy experience runs through Feb. 1 at the Exploratorium.

Build a Water Powered Machine! Our campers definitely know how to make creatice machines to move water! This month, Water Powered Machines is the engineering challenge for young inventors at the Lawrence Hall of Science Inventor's Lab in Vallejo. The lab is open from 11 a.m. to 4 p.m. on Saturdays, and also for drop in hours from 3 - 7 p.m. on Wednesdays, Thursdays, and Fridays. Start brainstorming!

Do you think you know Los Altos? The Los Altos Street Scramble is this Saturday morning. Beginning at 9 a.m., maps are handed out to participating families or small groups to try to reach as many spots - via foot or bike - on the map within 90 minutes or three hours (there are two optional durations). Also, participants can earn points to gain a spot at the San Francisco Night & Day Challenge June 2-3.

Free Museum Weekend for Bank of America card holders. The first full weekend of every month is Museums on Us weekend for any BofA card holder. Local participating museums include: Chabot Space & Science Center; de Young Museum; Legion of Honor; Contemporary Jewish Museum; Children's Creativity Museum; The Tech Museum; and the San Jose Museum of Art.