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- 10. Blackboard Tools
- 15. Props
- 20. Audio
- 30. Slide Projectors
- 34. Film Projectors
- 36. Overhead Projectors
- 38. Video And Computer Projection
- 40. Photography
- 50. X-Y, Chart Recorders
- 60. Buildings
- 65. Museums
- 70. Resources Books
- 73. Unclassified Demonstrations
- 75. Philosophy
- 80. Films
- 85. Computer Programs
- 10. Timers
- 15. Position and Velocity Detectors
- 17. Sources of Sound
- 18. Sound Detectors
- 20. Circuits/Components/Instruments
- 30. Function Generators
- 37. Oscilloscopes
- 40. Advanced Instruments
- 50. Power Supplies
- 60. Light Sources
- 61. Light Paths Made Visible
- 62. Lasers
- 65. Microwave Apparatus
- 90. Computer Interface
- 10. Motors
- 20. Pumps
- 25. Vacuum
- 30. Air Support
- 35. Ripple Tank
- 40. Other
