41 Educational services, namely, conducting classes in the field of mathematics, English, science, geography, history, personal, social, health and economics education and religious education; educational services, namely, training and instruction in the field of mathematics, English, science, geography, history, personal, social, health and economics education and religious education; advisory and consultancy services relating to education, namely providing information relating to education services; audio-visual display presentation services for educational purposes, namely operation of audio-visual presentation equipment for others; publication of educational materials, namely, books and journals in the field of mathematics, English, science, geography, history, personal, social, health and economics education and religious education; film production for educational purposes; production of educational sound and video recordings; computer based educational services, namely, providing on-line instruction in the field of mathematics, English, science, geography, history, personal, social, health and economics education and religious education