February 28

American Red Cross, Hawaii State Chapter, 4155 Diamond Head Road, 8:30 a.m.-4:30 p.m., $129. Prepare youth with the knowledge and skills necessary to safely and responsibly give care for children and infants. Pre-registration required. (1-800-733-2767, redcross.org/take-a-class)

Verizon Wireless at Pacific Guardian Tower, 8:30-9:30 a.m., free. Learn more about how to use your new smartphone. Pre-registration required. (vzwworkshops.verizonwireless.com/vzwworkshops)

Verizon Wireless at Pearl Highlands, 9-10 a.m., free. Learn more about how to use your new smartphone. Pre-registration required. (vzwworkshops.verizonwireless.com/vzwworkshops)

Verizon Wireless at Moanalua Center, 9-10 a.m., free. Learn more about how to use your new smartphone. Pre-registration required. (vzwworkshops.verizonwireless.com/vzwworkshops)

Chinese Cultural Plaza, 2-5 p.m., free. Open to students of all levels of experience. Taught by Master James Huang. (679-7587)

Art Explorium, 1142 Koko Head Ave., 2:30-4 p.m., $15, ages 5 and up. Learn the basics of using a sewing machine and make garlands. Pre-registration required. (artexplorium.org/workshops)

Hanauma Bay Nature Preserve, Education Alcove Classroom, 3-4 p.m., free. Jonathan Giddens of UH Manoa discusses “To Slay the Argus-eyed Giant (introduced grouper, roi, Cephalopholis argus), a Tale of Doom and the Ultimate Victory of Hawaiian Coral Reefs.” (397-5840)

Kahala Mall, 7-11 a.m., free. Donate blood to save lives. Appointments recommended. (848-4770)

Moanalua Middle School cafeteria, 8 a.m.-12:30 p.m., free. Donate blood to save lives. Appointments recommended. (848-4770)

St. John Vianney Parish, 7 a.m.-12:30 p.m., free. Donate blood to save lives. Appointments recommended. (848-4770)

Hawaii Children’s Discovery Center, 10 a.m.-2 p.m., free/first 500 HDS members, $7/general public. Hawaii Dental Service provides games and activities for keiki, plus a visit from the Tooth Fairy, to teach about the importance of seeing a dentist regularly. (521-1431)

The Palladium at Ala Wai Golf Clubhouse, 6-9:15 p.m., $5-$10. Get lessons for the first hour, then dance to swing, cha cha, waltz, NC 2-step, CW, salsa, foxtrot and more. (529-8816)

UH-Manoa’s East-West Center Gallery, 1601 East-West Road, 2-3 p.m., free. Chet-Yeng Loong explores Malaysian children’s music through folk songs, storytelling and musical instruments. (944-7177)

St. John Vianney Parish, 4-5:30 p.m., free. Windward Choral Society presents a special concert celebrating African-American music, with guest artists soprano Georgine Stark. (thewindwardchoralsociety.org)

Kapiolani Park Bandstand, 2 p.m., free. (922-5331)

The Republik, 1-6 p.m., $25-$30. St. John Vianney’s Halau Ka Pa Hula O Ka Lei Hulu Hiwa hosts a fundraiser for their upcoming trip to perform at Disneyland. Expect pupu, raffle tickets, a silent auction and entertainment from Nesian N.I.N.E., Tropical Knights, Ernie Cruz, Project Praise and more. (230-4875, leihuluhiwa@gmail.com)

Honolulu Country Club Gallery, 1690 Ala Puumalu St., Feb. 28-April 10, 8 a.m.-8 p.m. daily, free. 2D artwork featuring water in all its forms by local artists in oil, acrylic, watercolor, mixed media and photography. Opening reception is March 6 from 5-7 p.m. Artists should review prospectus before bringing water-themed works on Feb. 28 from 8:30-9 a.m.(db.tt/6UKeACD6, 286-5675)

Kumu Kahua Theatre, 46 Merchant St., 6:30-9:30 p.m., free. Those interested in auditioning for a role in “#iambadatthis” are encouraged to learn the best way to prepare from director Harry Wong III. Pre-registration required. (536-4222, kumukahuatheatreom@gmail.com)