Celebrate National Take a Hike Day, take in a family comedy show, or learn all about different kinds of arms and armor used by Roman soldiers, Medieval knights, and beyond.

Friday, November 16

Backyard and Beyond: Forest Fridays. Discovery Museum, 177 Main St., Acton. 10-10:45 a.m. Enjoy a nature-based activity inspired by the weather and season. Embrace the day as it comes. Recommended for ages 2 to 6. Free with admission. Members free; nonmembers $14.50, ages under 1 free. discoveryacton.org.

Make a Mess: Spin Art. Discovery Museum, 177 Main St., Acton. 2-4:30 p.m. Drop-in totwist tools, twirl paper, and give watercolors a whirl, creating a uniquely spun piece of art. Free with admission. Members free; nonmembers $14.50, ages under 1 free. discoveryacton.org.

Family Fun. Newton Free Library, 330 Homer St., Newton. 3-5 p.m. Drop-in for family games and activity times, as the library provides games, building materials, and a space to connect. Free. newtonfreelibrary.net.

Festival of Trees Preview Party. Berkshire Museum, 39 South St., Pittsfield. 5:30-7:30 p.m. Be among the first to see this year’s chart-topping Festival of Trees featuring more than 100 dazzling, decorated holiday trees, each depicting a popular song. Member adults $30, children $15; nonmember adults $50, children $25. berkshiremuseum.org.

***

Saturday, November 17

Celebrate National Take a Hike Day: Orienteering. Discovery Museum, 177 Main St., Acton. 9 a.m.-4:30 p.m. Grab a map and go on an orienteering adventure on the conservation land marked by three courses of varying difficulty. Free with admission. Members free; nonmembers $14.50, ages under 1 free. discoveryacton.org.

MFA Playdates: Friendly Faces. Museum of Fine Arts: Boston, 465 Huntington Ave., Boston. 10:15-11 a.m. Bring your toddler to enjoy story-time and looking activities in the galleries, followed by artmaking as we look at the faces that form the art we love and see. Designed for ages 4 and under. Free with admission. Members free; nonmember adults $25, youths 7 and up $10, ages under 7 free. mfa.org.

Family Yoga Class. Newton Free Library, 330 Homer St., Newton. 10:30-11:30 a.m. Learn cooperative games, age-appropriate poses, partner poses, breathing exercises, simple mindfulness activities, and relaxation. Designed for ages 3 to 12 with caregiver. Free. newtonfreelibrary.net.

Arms + Armor Demonstrations. Worcester Art Museum, 55 Salisbury St., Worcester. 11:30 a.m. & 2 p.m. Join this interactive program to learn all about different kinds of arms and armor used by Roman soldiers, Medieval knights, and beyond. Free with admission. Members free; nonmember adults $16, youths $6, ages under 4 free. worcesterart.org.

Special Storytime: Randall de Seve and Pamela Zagarenski. The Eric Carle Museum of Picture Book Art, 125 West Bay Rd., Amherst. 2 p.m. Enjoy as two-time Caldecott-winning artists Pamela Zagarenski and author Randall de Seve tell a tender, witty friendship store of imagination gone wild. Free with admission. Adults $9, youths $6. carlemuseum.org.

Incredibles 2. Worcester Public Library: Main Branch, 3 Salem Sq., Worcester. 2:30 p.m. Watch as the Parr family comes back together as they take on the evil villain Screenslaver and Jack-Jack develops his powers. Free. mywpl.org.

Happier Family Comedy Show. The Eric Carle Museum of Picture Book Art, 125 West Bay Rd., Amherst. 3 p.m. Join this all new, created-on-the-spot hilarious improv show made to ensure families of all ages can enjoy. Member adults $9, youths $4.50; nonmember adults $10, youths $5. carlemuseum.org.

Festival of Trees After Dark. Berkshire Museum, 39 South St., Pittsfield. 5-7 p.m. Discover twinkling lights ablaze during this indoor forest of imaginatively decorated trees festooned with musical motifs set within a dreamy atmosphere. Members $3, nonmembers $5. berkshiremuseum.org.

Especially for Me: Autism Friendly Evening. Discovery Museum, 177 Main St., Acton. 5-8 p.m. Come explore the new Discovery Museum building during this time to play, learn, and experience, with dinner provided. Register ahead. Free. discoveryacton.org.

Worcester Railers vs Orlando Solar Bears. DCU Center, 50 Foster St., Worcester. 7 p.m. Enjoy as the Worcester Railers takes on the Solar Bears for the entire family to enjoy. $15-35. dcucenter.com.

***

Sunday, November 18

Vanessa Trien & The Jumping Monkeys. Discovery Museum, 290 Harvard St., Brookline. 10:30 a.m. Boston Parents’ Choice Award-winning band returns for their highly anticipated annual Coolidge Corner Theatre show, featuring infectious folk-op-world sounds, humor, warmth, and great music. Recommended for ages 2 and up. Adults $13, children $10. coolidge.org.

Make a Holiday Evergreen Wreath. Wachusett Meadow Wildlife Sanctuary, 113 Goodnow Rd., Princeton. 1-3 p.m. Study some different types of evergreens and make a decorative wreath with greens, winterberry, seed pods, and ribbons. For families with children ages 3 and up. Register ahead. Members $25, nonmembers $35. massaudubon.org.

Dreaming of Arabia. Regent Theatre, 7 Medford St., Arlington. 2 p.m. Enjoy as the Sarab-Mirage Dance Company performs dance alongside images, tales, and music from Arabian lands, new and old. $20-50. regenttheatre.com.

Boston Area Chantey & Maritime Sing. USS Constitution Museum, Charlestown Navy Yard, Building 22, Charlestown. 2-5 p.m. Listen, learn, and lift your voices, as you participate in your Maritime Heritage by joining a rousing chorus of sea chanteys at the museum. Adults $10, children $5. ussconstitutionmuseum.org.

The Littlest Matryoshka: Puppet Show. The Eric Carle Museum of Picture Book Art, 125 West Bay Rd., Amherst. 2:30 p.m. See the story of The Littlest Matryoshka come to life with large string puppets and music composed for this performance. Recommended for ages 5 and up. Members $4.50, nonmembers $5. carlemseum.org.

Worcester Railers vs Orlando Solar Bears. DCU Center, 50 Foster St., Worcester. 3:05 p.m. Enjoy as the Worcester Railers takes on the Solar Bears for the entire family to enjoy. $15-35. dcucenter.com.