9 a.m. -- Sustainability Series: "Seed Starting Workshop" at Clear Creek Natural Heritage Center, 3310 Collins Road. Free. Visit www.clearcreekdenton.com or call 940-349-8152.
9 a.m. -- Musacchio Mud Mountain Challenge, benefiting Arrows for Heroes, at Cinnamon Creek Ranch, 13794 Old Denton Road, southwest of Roanoke. Four-mile, 2-mile and kid-friendly 1K races with obstacles, mud and a mountain. $20-$40. To register, visit www.arrowsforheroes.org.
9 a.m. to 12:30 p.m. -- Volunteer Income Tax Assistance for low- to moderate-income families and individuals at North Branch Library, 3020 N. Locust St. Visit www.unitedwaydenton.org/VITA or call 940-566-2688.
10 a.m. -- "I Love Trucks" Story Time at South Branch Library, 3228 Teasley Lane. Best for ages 1-5.
10 a.m. -- Junior Rangers: "Wildlife Detectives" at the Isle du Bois Unit of Ray Roberts Lake State Park, on FM455, 10 miles east of I-35. Track down and identify critter clues at the Lost Pines Amphitheater. At 2 p.m., "Creepy Crawly Bug Safari" at the Interpretive Nature Center, followed by "Reading With a Ranger" story time and crafts at 4 p.m. $7 entrance fee for ages 13 and older. Call 940-686-2148.
10 a.m. to 1 p.m. -- Touch a Truck, a fundraiser for the Explorium Denton children's museum, in the parking lot of C.H. Collins Athletics Complex, 1500 Long Road. Families can climb on, get in and explore dozens of vehicles. Suggested donation of $2 per person. Visit www.exploriumdenton.org.
11 a.m. to 4 p.m. -- Boy Scouts of America Troop 65's Centennial Celebration at Troop 65 Scout Park and Evers Park, at the corner of FM2164 and Windsor Drive. Program and catered lunch ($10) start at 11:30 a.m. Event includes tours of Denton's last remaining Scout hut, music by the Isaac Hoskins Band, bounce houses, a climbing wall, military vehicles on display, Scout skill demonstrations and more. To buy tickets or make a donation, visit www.troop65denton.com.
Noon -- Denton Evening Rotary Club's Winter Warmer, benefiting UpTop Denton, at the Bearded Monk and Denton County Brewing Co., 122 and 200 E. McKinney St. $10 for a beer tasting and a slice of pizza from Famous Andy's Pizza. Visit www.dentonwinterwarmer.com.
2 p.m. -- "So You Want to Write a Novel?" at Emily Fowler Central Library, 502 Oakland St. Learn the basics of book writing. Free. To register, call 940-349-8752.
2 to 4 p.m. -- Art Journaling Workshop for ages 11-17, taught by artist Karlene Schoonover, at North Branch Library, 3020 N. Locust St. Free; registration required. Call 940-349-8752.
6:30 p.m. -- "Abandonment to Pleasure: Early 20th Century French Songs and Chamber Music," a UNT faculty concert featuring Jennifer Lane, James Scott, Elvia Puccinelli and Jesus Castro-Balbi, in Voertman Hall at the UNT Music Building, at Avenue C and Chestnut Street. Free. Call 940-565-2791 or visit www.music.unt.edu.
7:30 p.m. -- Music Theatre of Denton presents Evita at the Campus Theatre, 214 W. Hickory St. $15-$20. Call 940-382-1915 or visit www.musictheatreofdenton.com.
Co-Dependents Anonymous meets from 10:30 to 11:30 a.m. at Christ the Servant Lutheran Church, 2121 E. University Drive. Call 940-391-3380.
Compulsive Eaters Anonymous meets at 8:30 a.m. at Trinity United Methodist Church, 633 E. Hobson Lane. Call 940-387-9526.
Denton County Gamblers Anonymous chapter meets from 10 to 11 a.m. in Room 336 of First United Methodist Church of Denton, 201 S. Locust St. Call 940-484-0087.
Narcotics Anonymous meets at 7:30 p.m. at St. Andrew Presbyterian Church, 300 W. Oak St.
Shalom Today group of Alcoholics Anonymous meets at 9 a.m., noon (men's meeting), 1:30 p.m. (women's meeting), 6 p.m. and 8 p.m. at 3730 E. McKinney St., Suite 107. Call 940-383-8252.
Show Me group of Alcoholics Anonymous meets at 9 a.m., 10:30 a.m., noon, 8 p.m. and 10 p.m. at 1622 W. University Drive, Suite 104. Call 940-566-9989.
1 to 2:30 p.m. -- Get to Know Your Sewing Machine at SCRAP Denton, 420 S. Bell Ave. $10. To register, call 940-391-7499 or visit www.scrapdenton.org.
2 to 4 p.m. -- Chess class at Emily Fowler Central Library, 502 Oakland St. Chess coaches from the UNT TAMS program will offer instruction for all levels. Free.
2 p.m. -- Music Theatre of Denton presents Evita at the Campus Theatre, 214 W. Hickory St. $15-$20. Visit www.musictheatreofdenton.com.
3 p.m. -- DSO on the Go: Dallas Symphony Orchestra in Winspear Hall at UNT's Murchison Performing Arts Center. $19; $9 for UNT students. Visit www.thempac.com.
Add your event to our online calendar at DentonRC.com/calendar; email firstname.lastname@example.org; fax to 940-566-6888; or mail to Page 2 Calendar, Denton Record-Chronicle, P.O. Box 369, Denton, TX 76202.