Keiki-Parent Activity Tour: Children 6 and older discover patterns from nature and in works of art at the Honolulu Academy of Arts. Free. Meet 10 a.m. at the Ward Avenue entrance. Call 532-8700.
For young readers: Ms. Frizzle visits for Keiki Story Time, 11 a.m. at Borders, Waikele. Children can make cards and flowers for mom, with materials supplied by the bookstore, 3 to 4 p.m. The Babysitters Club meets at 7 p.m. in the Video Room.
"Hula Heart": A young boy from Hawaii must cope with life in California. Basketball, ukuleles, hip-hop and hula mix in Honolulu Theatre for Youth's portrayal of a boy's wacky, poignant world 4:30 p.m. at McCoy Pavilion, Ala Moana Park. Tickets are $9 general, $7.50 ages 13 to 18, $5 children and seniors. Call 839-9885.
Mother's Day Special: Pay tribute to Mother Nature during a walk through the forest, 9:30 to 11 a.m. Children ages 3 to 5 can watch animal moms care for their families. Costs $5. Call the Hawai'i Nature Center at 955-0100.
What makes Mom special: Children are invited to read their essays and poems celebrating Mom, 3 p.m. at Borders, Waikele. The essay contest winners will be announced.
Spend an evening star-gazing at the Observatory, 7:30 to 9 p.m. Fridays and Saturdays. Free. Register at 847-3511.
"Aloha Kilolani: 35 Years of Hawaiian Skies": Program reviews topics from the Planetarium's 35-year history, 11 a.m. and 2 p.m. daily, and 7 p.m. Fridays and Saturdays. Costs $3.50. Call Bishop Museum at 847-8201.
Train rides: Enjoy a 90-minute ride through Ewa 12:30 and 2:30 p.m. Sundays with the Hawaiian Railway Society, 91-1001 Renton Road. Passengers should arrive a half hour before departure time. Costs $8 general, $5 seniors and children. Call 681-5461 for reservations.