Eat flapjacks at the World's Largest Pancake Breakfast, meet Worcester's new resident mountain lions or take mom out to tea.

Friday, May 10 

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

Toddler and Preschool Play Series: Materials Play. Eric Carle Museum of Picture Book Art, 125 West Bay Rd., Amherst. 11-11:30 a.m. Experiment with materials selected especially for young explorers, in the Art Studio. Free with admission. Adults $9, youths $6, ages under 1 free. carlemuseum.org.

Sensory Play Storytime. Newton Free Library, 330 Homer St., Newton. 11:15 a.m.-12 p.m. Look, listen, touch, and play. Enjoy a story and activities to explore different sensory concepts. For ages 2 to 4. Free. newtonfreelibrary.net.

Squishy Circuits. Discovery Museum, 177 Main St., Acton. 2-4:30 p.m. Discover the conductive property of playdough and make LEDs light up, buzzers buzz, and motors whir. Free with admission. Members free; nonmembers $14.50, ages under 1 free. discoveryacton.org.

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Saturday, May 11 

World's Largest Pancake Breakfast. Main St., Springfield. 8-11 a.m. The Spirit of Springfield hosts this annual tradition, shutting down the city's Main Street for a massive flapjack feast. Guests can enjoy pancakes and syrup, Canadian bacon, milk, juice and coffee while entertainment and activities take place throughout the morning. Admission and activities free; breakfast $3 for adults and $1 for children. spiritofspringfield.org. 

Pop-Up Play Day. Berkshire Museum, 39 South St., Pittsfield. 10 a.m.-12 p.m. Build, rebuild, collaborate, and play on the big, blue blocks of the Imagination Playground. Free with admission. Members free; nonmember adults $13, youths 4 and up $6, ages under 4 free. berkshiremuseum.org.

Celebrate Azize’s 4th Birthday. Franklin Park Zoo, 1 Franklin Park Rd., Boston. 10 a.m.-2 p.m. Watch Azize, the youngest of Franklin Park Zoo’s western lowland gorilla troop, enjoy special enrichment treats, learn all about the animals during zoo encounters, and more. Free with admission. Members free; nonmember adults $16.95, ages 2 to 12 $11.95, ages under 2 free. zoonewengland.org.

Astronomy Day. Springfield Museum, 21 Edward St., Springfield. 10 a.m.-4 p.m. Get ready for out of this world fun in the Science Museum, with a day of celestial and astronomical fun. Free with admission. Adults $25, youths 4 and up $13, ages under 3 free. springfieldmuseums.org.

Wildcat Station Opening Day. EcoTarium, 222 Harrington Way, Worcester. 10 a.m.-5 p.m. Be among the first to meet the EcoTarium's two new mountain lions and several native bird species are at the center of Wild Cat Station, a spectacular new outdoor exhibit. Adults $18, children and seniors $14, kids under 2 and members free. ecotarium.org. 

Exploring Science Together: Marine Life. Harvard Museum of Natural History, 26 Oxford St., Cambridge. 10:30 a.m.-12 p.m. Dive deep into the underwater life of marine animals and learn all about the challenges of life at sea with hands-on activities. Register ahead. Members $15, nonmembers $25. hmnh.harvard.edu.

Arms + Armor Demonstrations. Worcester Art Museum, 55 Salisbury St., Worcester. 11:30 a.m. & 2 p.m. A fun interactive program, learning 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 4 and up $6, ages under 4 free. worcesterart.org.

Mother’s Day Tea. Museum of Russian Icons, 203 Union St., Clinton. 1-3 p.m. Celebrate spring and Mother’s day by participating in an afternoon of traditional Russian tea service. Register ahead. $30. museumofrussianicons.org.

Special Storytime. Eric Carle Museum of Picture Book Art, 125 West Bay Rd., Amherst. 2 p.m. Journey on an unlikely friendship between a young boy and the moon, with a time to create your own flying kites, machines, and orbiting planets to add to our collective story. Free with admission. Adults $9, youths $6, ages under 1 free. carlemuseum.org.

A Dog’s Way Home. Newton Free Library, 330 Homer St., Newton. 2 p.m. Watch this charming tale following the story of a dog’s determination to reunite with its owner. Free. newtonfreelibrary.net.

Everyday Engineering: Air Play. Discovery Museum, 177 Main St., Acton. 2-4:30 p.m. Drop-in and build creations that float and fly in a tunnel of swirling air with a variety of materials to craft your contraption. Free with admission. Members free; nonmembers $14.50, ages under 1 free. discoveryacton.org.

BotShop Workshop. Leominster Public Library, 30 West St., Leominster. 2:30-4 p.m. Join Minni of Boston for this workshop exploring engineering and mechanics and construct individual robots, buttons and all. For ages 6 to 10. Register ahead. Free. leominsterlibrary.org.

Especially for Me: Visually Impaired Family Evening. Discovery Museum, 177 Main St., Acton. 5-8 p.m. An evening especially for families experiencing a visual impairment. Explore, play, experiment, and imagine throughout the Museum and Discovery Woods, with dinner provided. Register ahead. Free. discoveryacton.org.

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Sunday, May 12 

Mother’s Day Celebration. Old Sturbridge Village, 1 Old Sturbridge Village Rd., Sturbridge. 9:30 a.m.-4 p.m. Enjoy family events planned throughout the day, including cooking, hands-on crafts, and performances. Free with admission. Mothers free; adults $28, youths $14, ages under 4 free. osv.org.

Mother’s Day at the Zoo. Stone Zoo, 149 Pond St., Stoneham. 10 a.m.-6 p.m. Visit the white-cheeked gibbon exhibit to visit mom Iggy and her two offspring, Holly, the mother reindeer, and celebrate all the wonderful families that call the Stone Zoo home. Free with admission. Mothers free; members free; nonmembers $14.95, ages 2 to 12 $9.95, ages under 2 free. zoonewengland.org.

Mother’s Day at the Zoo. Franklin Park Zoo, 1 Franklin Park Rd., Boston. 10 a.m.-6 p.m. Visit Kiki the western lowland gorilla and her offspring, as well as Baird’s tapir mom, Abby, as well as all the families that call Franklin Park Zoo home. Free with admission. Mothers free; members free; nonmember adults $16.95, ages 2 to 12 $11.95, ages under 2 free. zoonewengland.org.

Marmee’s Mother’s Day Party. Fruitlands Museum, 102 Prospect Hill Rd., Harvard. 11 a.m.-2 p.m. Come by the Farmhouse to celebrate Mom with this “Little Women” themed Mother’s Day Party. Free with admission. Members free; nonmember adults $15, ages 5 to 13 $6, ages under 5 free. fruitlands.org.

Early Music Concert. Newton Free Library, 330 Homer St., Newton. 2 p.m. Sarah Cantor brings a collective concert of early music as part of the Newton Festival of the Arts. Free. newtonfreelibrary.net.

The General. TCAN: Center for Arts, 14 Summer St., Natick. 4 p.m. Live music accompanies this screening of one of the most revered comedies of the silent era featuring Buster Keaton in the midst of the Civil War. Members $10, public $12. natickarts.org.