Friday, July 19 

Backyard and Beyond: Forest Fridays. Discovery Museum, 177 Main St., Acton. 10-10:45 a.m. Come to the Discovery Woods to experiment and explore through a nature-based activity based on the season and weather. Recommended for ages 2 to 6. Free with admission. Members free; nonmembers $14.50, ages under 1 free. discoveryacton.org.

There Was an Old Lady Story-Time. Leominster Public Library, 30 West St., Leominster. 10-11 a.m. Join to read this classic story what happens when a little old lady swallows a fly, with songs, friends, and treats. For ages 7 and under. Register ahead. Free. leominsterlibrary.org.

Free Fun Friday at The Carle. Eric Carle Museum, 125 West Bay Rd., Amherst. 10 a.m.-4 p.m. Come celebrate picture books with art activities, films, and special story-times. Free. carlemuseum.org.

Made in the Shade Storytime. Eric Carle Museum, 125 West Bay Rd., Amherst. 10:30-11 a.m. Join in Bobbie’s Meadow for an interactive story-time under the apples trees with blankets provided. Free with admission. Adults $9, youths $6, ages under 1 free. carlemuseum.org.

Family Yoga. Worcester Public Library: Roosevelt Branch, 1006 Grafton St., Worcester. 10:30-11:30 a.m. Join us for a fun-filled yoga and mindfulness morning featuring guided meditation, breathing techniques, and special exercises. Free. mywpl.org.

Summer Friday Nights Free. Discovery Museum, 177 Main St., Acton. 4:30-8 p.m. Explore the Discovery Woods and museum, enjoy treats from the VeeBop’s Ice Cream truck, and collect food donations for Open Table of Concord and Maynard, and the Acton Food Pantry. Free. discoveryacton.org.

DIY Mini Golf. Discovery Museum, 177 Main St., Acton. 5-7 p.m. Help construct and create a mini-golf course with hills, loops, and tunnels using simple, repurposed, and recycled materials. Free. discoveryacton.org.

Free Friday Flicks: Spider-Man: Into the Spider-Verse. Hatch Shell, 47 David G Mugar Way, Boston. 6 p.m. Bring a blanket or lawn chair, pack a picnic, enjoy free games, and watch this Academy Award-winning animated flick following Teen Miles Morales as he becomes Spider-Man on a cross-dimensional adventure. Free. wbznewsradio.iheart.com.

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Saturday, July 20 

26th Annual Glasgow Lands Scottish Festival. Look Park, 300 North Man St., Florence. 9 a.m.-5 p.m. Enjoy dancers, athletes, entertainment, food, and more in this celebration of Scottish heritage and tradition through this summer festival. Adults $18, youths 6 to 12 $5, ages under 6 free. glasgowlands.org.

Preschool Story Hour: Butterflies. Broad Meadow Brook Wildlife Sanctuary, 414 Massasoit Rd., Worcester. 10-11 a.m. Bring your favorite adult for a thematic hour of a story, an activity, and a naturalist-led walk. For ages 3 to 5. Register ahead. Member children $3, nonmember children $4. massaudubon.org.

Neponset RiverFest. Neponset Park, Dorchester. 10 a.m.-2 p.m. Enjoy live music, exhibitor displays, and kid-friendly fun including face painting, a rock wall, a bouncy house, a spray deck, and a fishing clinic. Climb on a Boston fire truck and get up close to sea creatures at a New England Aquarium tide pool touch tank. Free canoes and kayaks are provided for families to get out on the river. Food and ice trucks throughout the day. Free. neponset.org/riverfest. 

50th Anniversary of the Moon Landing. Discovery Museum, 177 Main St., Acton. 11 a.m.-2 p.m. Celebrate the giant leap for mankind, as we build landing pods, blasting off with stomp rockets, and more. Free with admission. Members free; nonmembers $14.50, ages under 1 free. discoveryacton.org.

Arms + Armor Demonstrations. Worcester Art Museum, 55 Salisbury St., Worcester. 11:30 a.m. & 2 p.m. A interactive program to learn about the arms and armor used by Roman soldiers, Medieval knights, and more. Free with admission. Members free; nonmember adults $16, ages 4-17 $6, ages under 4 free. worcesterart.org.

E.T. Newton Free Library, 330 Homer St., Newton. 2 p.m. Cool off and enjoy this family classic following a young boy who becomes best friends with an extra-terrestrial. Free. newtonfreelibrary.net.

Happier Family Comedy Show. Eric Carle Museum, 125 West Bay Rd., Amherst. 3-4 p.m. Enjoy this all-new, created on-the-spot, collaborative, participatory, and family-friendly improv show. Recommended for ages 5 to 12. Member adults $9, youths $4.50; nonmember adults $10, youths $5. carlemuseum.org.

Family Film Festival: Incredibles 2. Prudential Center, 800 Boylston St., Boston. 6 p.m. Enjoy entertainment, children’s activities, giveaways, and this animated adventure following the Parr Family as they re-emerge as superheroes facing off an unknown foe. Free. prudentialcenter.com.

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Sunday, July 21 

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 USS Constitution Museum. Free with admission. Recommended donation $5-15. ussconstitutionmuseum.org.