• 19 Engineering mathematics
• 14 Industrial applications
• 13 Science
• 13 Vocational guidance
• 12 Environmental sciences
• 11 Mathematics
• 10 Computers
• 10 Geometry
• 9 Computer networks
• 9 Telecommunication
• 8 Cyberspace
• 8 Internet
• 8 Social aspects
• 7 Electricity
• 7 Information society
• 7 Research
• 6 Automation
• 6 Computer architecture
• 6 Computer engineering
• 6 Computer input-output equipment
• 6 Electric industries
• 6 Robotics
• 5 Digital media

• 48 Films Media Group
• 48 Films for the Humanities & Sciences (Firm)
• 13 Media4Math
• 8 Infobase
• 6 4 Learning (Firm)
• 6 Public Broadcasting Service (U.S.)
• 4 Media 4 Math (Firm)
• 4 Video Education Australasia
• 2 Cambridge Educational (Firm)
• 2 Uniview Worldwide
• 1 ABC News Productions
• 1 ARTE France
• 1 Allegro Productions (Firm)
• 1 American Public Television
• 1 BBC Worldwide Ltd
• 1 Brazelton, T. Berry
• 1 Canadian Broadcasting Corporation
• 1 Fred Friendly Seminars (Firm)
• 1 Meridian Education Corporation
• 1 Open University
• 1 TVF International (Firm)
• 1 TVOntario

• 48 English
• 1 Multiple languages

• 3 United States

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