1. Friday

Food, games and prizes are all part of the dive-in movie and 100-year celebration at the Ott YMCA, 401 S. Prudence Road. Celebrating the YMCA’s 100th birthday party, the event will run 6-9 p.m. $3; $15 maximum per family. 885-2317.

2. Daily

Tucson’s River of Words Youth Poetry and Art Traveling Exhibit is at Agua Caliente Park, 12325 E. Roger Road, through June 25. In the exhibit, local children express their understanding of watersheds and share their view of the natural world in the exhibition of poetry and mixed-media art. View the exhibit from 9 a.m. to 2 p.m. Tuesdays-Saturdays. Free. 615-7855.

3. Mondays

Tai Chi for Health, Arthritis and Balance runs 11 a.m. to noon through August at Sunrise Chapel, 8421 E. Wrightstown Road. The exercises are gentle and smooth, with qigong techniques. $7 per class; $25 for the month of August. 290-1956.

Arizona Daily Star