• 31 Videos, Slides, Films

• 21 Study and teaching
• 10 Science
• 8 Mathematics
• 6 Study and teaching (Secondary)
• 5 Technology
• 3 Physical education and training
• 2 Activity programs
• 2 Career development
• 2 Design
• 2 Drama in education
• 2 Language arts
• 2 Reading
• 2 Vocational guidance
• 1 Ability testing
• 1 Art
• 1 Art in education
• 1 Breast
• 1 Business education
• 1 Cancer
• 1 Chemical engineering
• 1 Chemistry
• 1 Citizenship
• 1 Climatic changes
• 1 Community and school
• 1 Curricula

• 31 English

• 1 China

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