If your child's favorite show is on before the work can be done, consider recording the show for later viewing. Set a bedtime for your child that is not altered by TV shows that interest your child. Children who are allowed to stay up late to watch television are usually too tired the following day to remember what they were taught in school. By all means, don't permit your child to have a TV set in her bedroom because this eliminates your control over TV viewing. Turn off the TV set during meals.
Family time is too precious to be squandered on TV shows.
In addition, don't have the television always on as a background sound in your house. If you don't like a quiet house, try to listen to music without lyrics. Teach critical viewing. Turn the TV on for specific programs only. Don't turn it on at random and scan for something interesting.