Looking for volunteer opportunities? The following groups in your area need volunteer help for a day, a week or on a regular basis. Nonprofit groups in need of volunteers should send notices to Volunteers, The Washington Post, 1150 15th St. NW, Washington, D.C. 20071. The list is published the first Thursday of the month.

Science-Project Mentors

The EnvironMentors Project seeks science-class mentors to help D.C. high school sophomores and juniors. No science expertise is necessary. Mentors help students design and implement environmental science-research or community-service projects, and they go on field trips together. Mentors also suggest project topics, identify research materials and methods, and help develop science fair presentations. Mentors, who meet with students once a week for eight months, receive support from a program manager, skills-training workshops, and informational and social gatherings. For more information, call Susan Carlson at 202-347-3533 or 202-347-5300.

Reading and Math Tutors

The STAR Academic Enrichment Program needs reading and math tutors for children ages 6 through 12 from 4 to 5 p.m. weekdays at libraries in Northwest and Northeast Washington. The program starts Oct. 4. For more information, call 202-636-3968.

College Mentors for Students

College Bound needs tutors and mentors for D.C. public high school students from low-income families. Throughout the school year, volunteers work one-on-one with students to build skills in math, language arts, test-taking and problem-solving. Volunteers must have a four-year college degree. Weekly evening tutoring sessions, from 6:30 tp 8:30 p.m., are held at three D.C. locations: Mondays at St. Aloysius-Gonzaga School, 900 North Capitol St. NW; Wednesdays at the Perry School, 128 M St. NW; and Thursdays at St. Matthews Baptist Church, 1105 New Jersey Ave. SE. Training is available. Tutoring begins the week of Sept. 13. For more information, call Cathy McDonald at 202-842-4014.

Jerry Lewis Telethon

The Muscular Dystrophy Association (MDA) is seeking local volunteers for the Jerry Lewis Telethon between 9 p.m. Sept. 5 and 1 a.m. Sept. 6. The telethon will air on some 200 television stations across the nation. Local volunteers will report to the Ronald Reagan International Trade Center Building, 1300 Pennsylvania Ave. NW, to answer phones, coordinate distribution of food and drinks for telethon workers, help with mailing out pledges, tally pledge slips, clean up and more. For more information, call the area MDA office in Fairfax County at 703-385-7186.

Museum Information Desk

The National Building Museum, which focuses on American achievements in building through exhibitions and educational programs, needs volunteers to work at the museum's information desk and as cashiers at the museum shop. Volunteers work two shifts per month, from three to four hours each, daily. Volunteers receive training and free membership benefits. Volunteers also are needed to help with a variety of administrative tasks. Hours are flexible. The museum is at 401 F St. NW, Washington. For more information, call 202-272-2448, Ext. 3302.

Takoma Park Festival Workers

Volunteers are needed at the Takoma Park Folk Festival on Sept. 26, at Route 410 and Maple Avenue in Takoma Park. Volunteers will help with sales of food, beverages and T-shirts, parking, the signing-in of performers, trash collecting and manning information booths. Shifts are for two-hour periods starting at 10 a.m. and ending at 8 p.m. For more information, call 301-585-7984.

Delivering Baked Goods to the Homeless

The Homeless Breakfast Program of St. Margaret's Episcopal Church needs volunteers with motor vehicles to deliver baked goods once a week to homeless shelters and soup kitchens in Northwest Washington. Volunteers also are needed to help with fund-raising and office work, such as typing and faxing, and to organize walk teams for a Nov. 20 Help the Homeless Walkathon. The church is at 1830 Connecticut Ave. NW. For more information, call Mary Sebold at 202-232-3066.