• 170 Videos, Slides, Films

• 54 Training of
• 50 Mathematics teachers
• 48 In-service training
• 48 Leadership
• 25 Activity programs
• 15 Problems, exercises, etc
• 9 Science
• 8 Educational tests and measurements
• 7 Technology
• 6 Education
• 6 Mathematical ability
• 6 Numeracy
• 6 Teachers
• 6 Testing
• 6 Vocational guidance
• 5 Career development
• 5 General Certificate of Secondary Education
• 5 Rating of
• 5 Teaching
• 4 Aids and devices
• 4 English language
• 4 Remedial teaching
• 4 Study and teaching (Secondary)

• 50 Carroll, Catherine, 1951-
• 50 Mumme, Judith
• 30 Brook Lapping Productions
• 19 Glasshead Productions
• 12 Glasshead Television and Web
• 12 Teachers TV (Television Channel)
• 11 Television Junction
• 7 Double Exposure (Firm)
• 7 Flashback Television (Firm)
• 5 Available Light Productions
• 3 Available Light (Firm)
• 3 Big Heart Media
• 3 Lambent Productions
• 2 Evans Woolfe (Firm)
• 2 HighScope Press
• 2 Maverick Television (Television network)
• 1 Bayley, John
• 1 Double Exposure/Flashback TV
• 1 ITV Granada Manchester
• 1 Illumina Digital
• 1 Independent Television News Limited
• 1 Real Life Productions

• 170 English

• 98 Great Britain
• 1 Hungary
• 1 Morocco

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