Artistic parents and children, aspiring singers, amateur photoraphers and senior citizens will want to look into a diverse range of inexpensive arts courses that are starting this week in Fairfax County.

The class include a kjoint drawing course for parents and children, an opera techniques workshop, a miniworkshop photography series and a special free creative drama course for seniors.

Most classes cost from about $10 to $25, depending on the number of hours of instruction, and are offered at locations throughout the county. Sponsoring organizations include the Fairfax County recreation department, the adult education program in public school, the McLean Community Center, the Fairfax County Council of the Arts and others.

"Beginning Drawing for you and Your Child" is a new concept in art classed and is being taught through adult education for the first time this winter. One parent and one child may register for six 1 1/2-hour sessions for a total cost of $8, beginning today at 7 p.m. in Falls Church High School. The course is designed to help parents and children express individual creative abilities and to foster and mutual appreciation of each other's work, according to Morris Newcomb, assistant supervisor of adult education.

Another adult education class in "Art Lessons from Famous Women Artists" is a studio painting course with short lectures in the use of techniques of leading woman artists throughout history. Cost is $27 for 12 sessions beginning at 12:30 p.m. on Feb. 15 in Braddock Elementary School.

The adult education program includes a variety of art and crafts courses such as drawing and painting, commercial art, sculpture, silk screen printing, ceramics and picture framing. Most classes cost $27 for 30 hours and meet in public schools, Newcomb said. Call 533-8191 for more details.

The recreation department is trying to attract adults over 60 into its new, free class in Creative Drama for Senior Citizens. Registration is being extended for this 10-session evening course which was supposed to have begun earlier this week in Chantilly Secondary School. Activities planned for seniors include the use of music, creative movement, storytelling and acting techniques within a supportive learning environment, explained Pat Archer, recreation specialist in the hobby class division.

Other new classes, some of which started this week, include an opera workshop for singers who want to study musical interpretation, makeup, acting, staging and costuming; country and bluegras guitar; movements for actors and clog dancing for couples.

Various ongoing arts and crafts courses for children and / or adults include drawing., painting, cartooning, stained glass, ballet, tap, jazz, belly and disco dancing. Also, mime, teen theater, theater costuming, performing with marionettes, musical comedy dance and musical comedy vocal techniques.

Recreation classes range is price from $12 to $24 and are held primarily in area schools and libraries. Registration information can be obtained by calling 691-2672. Late registration is available for some classes that have already begun, Archer pointed out.

The McLean Community Center is offering its new mini-workshop photography series on successive Saturdays beginning Feb. 25. The first session covers "Preparing a Photography Portfolio and Resume," followed by "Breaking Into Free-Lance Photography," on March 11; "Build Your Own Darkroom" on March 25; "Introduction to Cibachrome printing" on April 1; and "Close-up and Macro Photography and Color Slide Duplicating" on April 15. Each workshop meets from 10 a.m. to 2 p.m. and costs $10. Instructor is National Geographic photographer Lowell Anson Kenyon.

Other adult classes in McLean include color photography, folk guitar, social dancing (ballroom and disco), belly dancing, painting (I and II), and a new coursein teen crafts.

Children's courses include a new basic theater arts techniques workshop for ages 10-14, two creative drama sections for youngters 4-6 and 7-10 and one creative movement class for ages 4-10. Art classes for children cover mixed media for grades 1-3 and drawing for grades 4-6.

All courses range in cost from $15 to $23.50 and are held in the McLean Community Center, 1236 Ingleside Ave. The color photography class starts today, but all others begin mid February or later. For more information, call 790-9248.

Two new natural dyeing worshops will begin at the Fairfax County Council of the Arts, 4601 Green Spring Rd., Alexandria, on March 19 and APril 16. Each session meets on Sunday from 10 a.m. to 2:30 p.m. and costs $7, plus $4 or $5 for materials, depending on the course chosen.

An intermediate loom weaving class starts Feb. 14 for $14 plus a $5 materials fee, and an inkle loom weaving course begins March 1 for $7 plus a $2 materials fee. Both sections meet from 10 a.m. to 12 noon. Registration information is available by calling 941-6066.