Friday, September 20 

Music and Movement with Miss Bernadette. Discovery Museum, 177 Main St., Acton. 9:30-10 a.m. Explore sound through singing and playing, as we move, make music, listen, learn, and get a multi-sensory workout. Free with admission. Members free; nonmembers $14.50, ages under 1 free. discoveryacton.org.

Backyard and Beyond: Forest Fridays. Discovery Museum, 177 Main St., Acton. 10-10:45 a.m. Enjoy a nature-based activity and a nature walk either in the Discovery Woods or out on the adjacent conservation land. Recommended for ages 2 to 6. Free with admission. Members free; nonmembers $14.50, ages under 1 free. discoveryacton.org.

Uno, Dos, Tres: Bilingual Storytime. Leominster Public Library, 30 West St., Leominster. 10-11 a.m. Speakers of all languages are welcome to read and rhyme in English and Spanish during this bilingual story-time covering basic concepts like counting and color. For ages 5 and under. Register ahead. Free. leominsterlibrary.org.

Build a Bug. Discovery Museum, 177 Main St., Acton. 2-4:30 p.m. Come create and use repurposed and recycled materials to imagine and build your very own 6-legged friend. Free with admission. Members free; nonmembers $14.50, ages under 1 free. discoveryacton.org.

2nd Annual New York Cat Film Festival. The Regent Theatre, 7 Medford St., Arlington. 7 p.m. An annual celebration of cats who share our lives, through short films from around the world meant to inspire, educate, and entertain, benefiting local animal welfare groups. $12. regenttheatre.com.

Catapult: Mouzart & Magic Shadows. The Hanover Theatre, 2 Southbridge St., Worcester. 8 p.m. The magic of shadow illusion brings to life the story of three prodigies, including a very musical mouse, through a funny, compelling, and thoroughly delightful story. $22-28. thehanovertheatre.org.

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Saturday, September 21

Museum Day. Various locations throughout Massachusetts. See the full list of 54 Bay State museums offering free admission and how to download your ticket here. 

Makers’ Weekend. Old Sturbridge Village, 1 Old Sturbridge Village Rd., Sturbridge. 9:30 a.m.-4 p.m. Celebrate artisans and see a showcase of New England trades from the 19th century, featuring blacksmiths, potters, tinners, printers, and more. Free with admission. Adults $28, youths 4-17 $14, ages 3 and under free. osv.org.

Red Panda Day. Franklin Park Zoo, 1 Franklin Park Rd., Boston. 10 a.m.-2 p.m. Celebrate International Red Panda Day and learn about the species during special zookeeper chats, meet author Gemmesa Johnson and listen to a reading of her book, and discover how you can save red pandas yourself. Free with admission. Members free; nonmember adults $21.95, youths 2-12 $14.95, ages under 2 free. zoonewengland.org.

29th Annual KidsFest. Wachusett Mountain, 499 Mountain Rd., Princeton. 10 a.m.-5 p.m. Enjoy a day of family fun featuring music, magic, juggling, mini golf, a giant slide, petting zoo, vendors, and more. Adults $10-13, children 6 to 12 $8-11, ages 5 and under free. wachusett.com.

Southbridge AutumnFest. Town Common, Optical Drive, Southbridge. 10 a.m.-5 p.m. Farmer’s market, kids’ games and rides, clowns, salsa dancing, craft beers and local wines. Free.

Apple Fest. Cooks Farm Orchard, 106 Haynes Hill Rd., Brimfield. 10 a.m.-6 p.m. Apple picking, live music, tractor rides into the orchard, hay bale maze, face-painting, baked goods and BT’s Food Truck. Free. cooksfarmorchard.com.

MFA Playdates: Shapes All Around Me. Museum of Fine Arts: Boston, 465 Huntington Ave., Boston. 10:15-11 a.m. Enjoy story time, looking activities in the galleries and artmaking inspired by the works with visit. Recommended for ages 4 and under. Free with admission. Members free; nonmember adults $25, youths 7 and up $10, children 6 and under free. mfa.org.

WAM Artful Play. Worcester Art Museum, 55 Salisbury St., Worcester. 10:30-11:15 a.m. Enjoy a special tour, story in the galleries, hands-on activity, and post-tour snacks. Designed for ages 0 to 5 and their families. Free with admission. Members free; nonmember adults $16, youths 4 and up $6, ages 3 and under free. worcesterart.org.

Everyday Engineering: Float and Fly. Discovery Museum, 177 Main St., Acton. 11 a.m.-2 p.m. Craft some simple contraptions that harness the power of air to float and glide from parachutes to whirligigs to hoop gliders. Free with admission. Members free; nonmembers $14.50, ages under 1 free. discoveryacton.org.

Wall and Bridges. The Eric Carle Museum of Picture Book Art, 125 West Bay Rd., Amherst. 1 p.m. Join Peter Sis as he shares stories of his Czech childhood and his love of picture books. Free with Museum Day ticket. carlemuseum.org.

New York Dog Film Festival: Program 1. The Regent Theatre, 7 Medford St., Arlington. 1 p.m. & 7 p.m. Celebrate the love between dogs and their people, through short films from funny narratives at the dog park to a cross-country road trip between dog and owner. $12. regenttheatre.com.

New York Dog Film Festival: Program 2. The Regent Theatre, 7 Medford St., Arlington. 2:30 p.m. & 8:30 p.m. Celebrate the love between dogs and their people, through short films from an animated story with an unexpected ending to a documentary following glorious canine athletes. $12. regenttheatre.com.

Happier Family Comedy Show. The Eric Carle Museum of Picture Book Art, 125 West Bay Rd., Amherst. 3-4 p.m. Join in during this created on-the-spot improv show set to entertain the entire family powered through comedy and imagination. Nonmember adults $10, youths $5; member adults $9, youths $4.50. carlemuseum.org.

What the Fluff. Union Square, Somerville Ave., Somerville. Saturday, Sept. 21 3-7 p.m. A celebration of 102nd anniversary of the invention of fluff, with fluff-themed games, activities, antics, musical performances, and fun for every age. Free. Rain Date: Sept. 22. fluffestival.com. 

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Sunday, September 22 

Rock & Walk for Babies. Nashoba Regional High School, 12 Green Rd., Bolton. 9 a.m.-1 p.m. Hosted by the Massachusetts TEARS Foundation, this event raises funds for the newly opened Center for Child Loss and resource programs to benefit local families who have experienced pregnancy, infant or child loss. Attendees rock in chairs and walk laps together, honoring children whose names appear on butterflies lining the path. Registration $10. give.thetearsfoundation.org/massachusetts2019.

Makers’ Weekend. Old Sturbridge Village, 1 Old Sturbridge Village Rd., Sturbridge. 9:30 a.m.-4 p.m. Celebrate artisans and see a showcase of New England trades from the 19th century, featuring blacksmiths, potters, tinners, printers, and more. Free with admission. Adults $28, youths 4-17 $14, ages 3 and under free. osv.org.

29th Annual KidsFest. Wachusett Mountain, 499 Mountain Rd., Princeton. 10 a.m.-5 p.m. Enjoy a day of family fun featuring music, magic, juggling, mini golf, a giant slide, petting zoo, vendors, and more. Adults $10-13, children 6 to 12 $8-11, ages 5 and under free. wachusett.com.

Apple Fest. Cooks Farm Orchard, 106 Haynes Hill Rd., Brimfield. 10 a.m.-6 p.m. Apple picking, live music, tractor rides into the orchard, hay bale maze, face-painting, baked goods and BT’s Food Truck. Free. cooksfarmorchard.com.

Special Sundays in the Studio. The Eric Carle Museum of Picture Book Art, 125 West Bay Rd., Amherst. Join us in the Art Studio to explore new materials and try a different project. Free with admission. Adults $9, youths $6, ages under 1 free. carlemuseum.org.

2nd Annual New York Cat Film Festival. The Regent Theatre, 7 Medford St., Arlington. 1 p.m. An annual celebration of cats who share our lives, through short films from around the world meant to inspire, educate, and entertain, benefiting local animal welfare groups. $12. regenttheatre.com.

Sunday Concert. Newton Free Library, 330 Homer St., Newton. 2 p.m. Join Alex Thomas for an afternoon concert on the piano. Free. newtonfreelibrary.net.