Montgomery Media presents the 17th annual Baby & Toddler Expo at the Greater Philadelphia Expo Center in Oaks from 10 a.m. to 5 p.m. Friday and Saturday.

Performances on both days include the Petting Zoo Puppet Show with puppeteer Abby London and magician Sam Singer. On Saturday, singer and caricaturist David C. Perry will perform his Drawings, Songs, & Silliness concert. There will also be a diaper derby and inflatable play park for kids. On Friday from noon to 2 p.m., games and prizes will be provided by mascot Buzzbee and the B101 B-crew. On Saturday, Radio Disney AM 640 Road Crew powered by SunPass will be offering kids participation games and music, and they will be providing prizes and giveaways from 11 a.m. to 1 p.m.

The expo will feature exhibitors, including Babies R Us and Garden State Discovery Museum, that will showcase products and services for families with young children and future parents.

The Baby & Toddler Expo, 10 a.m. to 5 p.m. Friday and Saturday at the Greater Philadelphia Expo Center, 100 Station Ave., Oaks. Admission: $6, $4 for ages 3 to 12. Free for ages 2 and younger. For more information, go to www.babyandtoddlerexpo.com.

The Okee Dokee Brothers

The Okee Dokee Brothers will bring their traditional bluegrass roots music Saturday to World Cafe Live.

The Minneapolis duo, winners of the Parents' Choice award for their album Take It Home, will perform original music focused on their unique style of wordplay. Their songs are known for their humor, and kids can learn about America's roots, as well as bluegrass music, while singing along.

The Okee Dokee Brothers, 11:30 a.m. Saturday at World Cafe Live, 3025 Walnut St. Doors open at 11 a.m. Tickets are $10, $7 for ages 1 to 12. Children younger than 1 are free. Information: 215-222-1400 or www.worldcafelive.com.

'Three's a Crowd'

Three-dimensional figures are a part of "Three's a Crowd" on Sunday afternoon at the Pennsylvania Academy of Fine Arts' Family Arts Academy Workshop.

From 2 to 3:30 p.m., guests can learn how to make three-dimensional pictures. Participants will see different views of objects when looking from the front, right, and left sides. From the mystery and simplicity of folding, attendees will discover that, with art, what you see is not always what you get.

The Pennsylvania Academy of Fine Arts' Family Arts Academy strives to strengthen initiatives in family development and art education while learning, creating, and having fun.

"Three's a Crowd," 2 to 3:30 p.m. Sunday at Pennsylvania Academy of the Fine Arts, 128 N. Broad St. Admission: Free. No RSVP or general admission fee is required. Museum is open 10 a.m. to 5 p.m. Tuesdays through Saturdays, 11 a.m. to 5 p.m. Sundays. General admission: $15, $10 for ages 12 to 18, $8 for age 60 and older and students with ID. Children 11 and younger are free. Information: 215-972-7600 or www.pafa.org.

Contact Monica Peters at mpeters@phillynews.com