Saturday, April 29 Muddy River Cleanup. Emerald Necklace, 125 The Fenway, Boston. 9 a.m.-12 p.m. Be part of something big as you join the Emerald Necklace Conservancy and hundreds of volunteers for our annual clean-up along the Muddy River and throughout the parks, with a picnic to follow. Register ahead. Free. emeraldnecklace.org.
Teacher Appreciation Day. Davis Farmland, 145 Redstone Hill, Sterling. 9:30 a.m.-5 p.m. The attraction celebrates teachers with free admission for licensed teachers and their immediate family. Teachers must present at the time of admission one of the following: EEC Certificate, a valid school district ID listing your name and your position as a teacher, MTA or AFT card, or state teaching license. davisfarmland.com.
Play Date: Uncovering Artists' Stories. The Institute of Contemporary Art: Boston, 25 Harbor Shore Dr., Boston. 10 a.m.-4 p.m. The museum will be filled with fun, creative, and even zany activities for kids and adults, as we take on the exhibition Nari Ward: Sun Splashed and create artmaking investigations based on the themes and techniques featured in it. Free. icaboston.org.
30th Annual Sheepshearing Festival. Gore Place, 52 Gore St., Waltham. 10 a.m.-5 p.m. Enjoy this family-favorite tradition consisting sheep-shearing, dog herding, spinning, weaving, and gardening demonstrations, as well as games, farm animals, a craft fair, food, and plenty of entertainment. $20. goreplace.org.
Art in Bloom. Museum of Fine Arts: Boston, 465 Huntington Ave., Boston. 10 a.m.-5 p.m. This joyous rite of spring pairs fine art with floral design with offerings of free guided tours and workshops among MFA treasures. Through Monday. Free with admission. Members free; nonmember adults $25, youths age 7 to 17 $10, children under 7 free. mfa.org.
Sheep Shearing Open House. Wachusett Meadow Wildlife Sanctuary, 113 Goodnow Rd., Princeton. 1 p.m.-4 p.m. Learn how sheep are sheared and how those fleeces eventually become warm hats and mittens, during this day of vendors, crafters, kids' activities, and more. Register ahead. Member adults $7, children $4; nonmember adults $9, children $5. massaudubon.org.
Healthy Kids in Nature Day. South Shore Natural Science Center, 48 Jacobs Ln., Norwell. 1 p.m.-5 p.m. Through music, nature walks, vendors, and hands-on activities, learn how families can experience healthy living and a healthy planet. Free with admission. Members free, nonmembers $5, children under 2 free. southshorenaturalsciencecenter.org.
Capturing Big Cats and Dogs with Pencil and Paper. Harvard Museum of Natural History, 26 Oxford St., Cambridge. 2 p.m.-3:30 p.m. Explore the world of big cats and dogs from wolves and coyotes to leopards and lions, as we use close observation and various realistic drawing techniques to capture these animals and bring them to life on the page. For ages 9 to 13. Register ahead. Members $25, nonmembers $35. hmnh.harvard.edu. Sunday, April 30 A Day of Community Service. Newton City Hall, 1000 Commonwealth Ave., Newton. 9 a.m.-4 p.m. Kick off NewtonServes Week with volunteer projects, ice cream sundaes, coffee, and more. Registration suggested. newtoncommunitypride.org.
PJ Pioneers Spring Chickens Hike. Wright-Locke Farm Conservancy, 78 Ridge St., Winchester. 10 a.m.-11:30 a.m. Strap on your little cargo and join other new parents on a special hike just for you, as we show your baby the chickens and goats before embarking on a guided hike through the Wright-Locke farm and Whipple Hill conservation area trails. Register ahead. Free. bostonjcc.org.
Art in Bloom: Community Day. Museum of Fine Arts: Boston, 465 Huntington Ave., Boston. 10 a.m.-4 p.m. Celebrate Art in Bloom with a day filled with family-friendly programming and entertainment. Free with admission. Members free; nonmember adults $25, youths age 7 to 17 $10, children under 7 free. mfa.org.
Engineer It: Materials Challenge. Providence Children's Museum, 100 South St., Providence. 11 a.m.-2 p.m. Complete different engineering challenges using simple household items, as you build amazing structures using only cardboard squares, construct towers with popsicle sticks and clothespins, and create contraptions from paper tubes and straws. Free with admission. Members free, nonmembers $9. childrensmuseum.org.
New England VegFest. DCU Center, 50 Foster St., Worcester. 11 a.m.-5 p.m. This free festival brings the local community together to celebrate all things vegetarian, from kids activities, to cooking demos, to speakers and raffles, and of course, plenty of food. Free. newenglandvegfest.com.
Nature Egg Hunt. Moose Hill Wildlife Sanctuary, 293 Moose Hill Parkway, Sharon. 1 p.m.-2 p.m. Explore the forest and wetlands of Moose Hill for any and all kinds of eggs, meet a costumed character as you learn about Moose Hill's diverse egg-laying inhabitant, and have fun searching for eggs. For ages 3 to 12. Register ahead. Members $6, nonmembers $9. massaudubon.org.
An Evening with Kristin Chenoweth celebrating The Art of Elegance. Symphony Hall, 301 Mass. Ave., Boston. 7 p.m. Emmy- and Tony-award winning singer and actress Kristin Chenoweth brings her boundless talent and charisma to Symphony Hall for an unforgettable evening of personal favorites: Broadway, pop, songbook classics, and more. Tickets $62 and up. celebrityseries.org.