41 television programming and production; video production; motion picture film production; development and dissemination of educational and entertainment materials in the fields of language arts, mathematics, science, social studies, computer skills, family education, teacher training, visual arts or music; educational services, namely, conducting classes, seminars, conferences, workshops, either live, via computer communications networks or via digital broadcast systems for parents, educators or children in the fields of language arts, mathematics, science, social studies, computer skills, visual arts, theater or music; all excluding services associated with the manufacture, design, installation, operation and maintenance of communications equipment and electronic communications network infastructures