Saturday — May 1
“Math Moves,” a new exhibit, opens Saturday at the Pacific Science Center, 200 Second Ave. N., Seattle. It uses a variety of hands-on activities to make experimenting with concerts of math memorable and fun. It encourages teamwork to advance mathematical understanding. Exhibit, open through May 1, included in admission. Hours are 10 a.m.-5 p.m. Mondays-Fridays and 10 a.m.-6 p.m. Saturdays and Sundays. Admission is $11.75-$19.75. For information, see pacificsciencecenter.org .
Saturday — Sunday
America's Largest Antiques and Collectibles Show, billed as the largest antique show in the Puget Sound area, comes to the Washington State Fair Events Center, 110 Ninth Ave. SW, Puyallup, this weekend. Hours are 9 a.m.-6 p.m. Saturday and 10 a.m.-5 p.m. Sunday. Admission is $8 adults, free for children 11 and younger.
Family Nature Walk Explore Tacoma parks during these seasonal naturalist-led family walks. 1-2 p.m. Jan. 23. Tacoma Nature Center, 1919 S. Tyler St., Tacoma. Registration requested. Free. 253-591-6439, tacomanaturecenter.org
Saturday — Jan. 31
“Arcadia Arcadia” local production, showtimes 8 p.m. Fridays-Saturdays and 2 p.m. Sundays through Jan. 31. Lakewood Playhouse, 5729 Lakewood Towne Center Blvd. S.W., Lakewood. $19-$25. 253-588-0042
“Ring of Fire” 8 p.m. Jan.23. Knutzen Family Theatre, 3200 SW Dash Point Road, Federal Way. $35; $30 seniors; $15 youth. 253-661-1444