March madness is in the air and we’ve got plenty of ways to help you kick off the mania this weekend. On our radar: a popular event with polar researchers, a consignment sale with rock bottom prices, a family event inspired by girls, a special event with a naturalist, a family event at SJCC and a production for little mateys. If you’re looking for even more family fun, the Seattle Bike Show returns this weekend with the best of biking (think products, gear and speakers) and Satsuma Kids Shop will be hosting a free Science Party + Pop-up Shop on Saturday with STEM-themed activities and apparel for budding scientists.

$199 SUMMER MEMBERSHIP SPECIAL at the Stroum Jewish Community Center!

photo: Stroum Jewish Community Center

Seattle

Polar Science Research Weekend
This action-packed polar adventure will feature tons of hands-on activities. Pick up an activity passport and take a journey to the poles. Earn stamps in your passport by participating in the engaging demonstrations, investigate a real ice core from Greenland, talk to polar researchers, see a spectacular smashing ice demonstration and much more. Fri., 10 a.m.–5 p.m..; Sat.-Sun., 10 a.m.–6 p.m. Seattle. $11.75 to $19.75 (under 3 and members Free). All ages. Event details.

West Seattle Co-op Consignment Sale
This popular consignment sale will feature hundreds of baby and kids’ clothes in sizes newborn to seven as well as furniture, toys, books and gear at bargain prices. Sign up to be a consignor and kick those unused baby and kid items to the curb or just shop the sale. Psst! Select items will be 50% off the last hour. Sat., 9 a.m.-1 p.m. Seattle. $1/person. All ages. Event details.

Free First Saturday: Girl Power
At this month’s Free First Saturday, celebrate the holiday Hina-matsuri also known as Girls’ Day. Visit the doll display in the Garden Court, create a work of art inspired by the current exhibition Paradox of Place and enjoy this month’s Kids Flick: Kiki’s Delivery Service. Sat., 11 a.m.-2 p.m. Seattle. Free. All ages. Event details.

Eastside

Robin Storytime & Crafts
This weekend’s story time at the Cedar River Watershed Education Center will feature robins. After a naturalist reads a story about the featured animal, kids will choose from several craft projects. Sat. & Sun., 1:30 p.m.-3 p.m. North Bend. Free. Pre-register online. All ages. Event details.

Shabbat Unplugged
Unplug from technology and plug into your family and community at this month’s Shabbat Unplugged. During this special event, there will be family yoga, a gym obstacle course, swimming, PJ Library storytelling, Shabbat arts and crafts and a group song session. Sat., 2 p.m.-4 p.m. Mercer Island. Free. All ages. Event details.

How I Became a Pirate
In this latest swashbuckling production, sail off on a fantastic musical excursion with a band of comical pirates and see what happens when they land at North Beach looking for an expert digger to join their crew. Sat., 1 p.m., 3 p.m. & 8 p.m.; Sun., 1 p.m. & 3 p.m. (also Mar. 12-13 & 19-20). Redmond. $5 to $10. Tickets required. All ages. Event details.

What fun things will you be doing this weekend? Tell us in the Comments below!

— Kristina Moy