Multiple choice

Which of these is a type of projected teaching aid?

  1. Blackboard

  2. Flannel board

  3. Holograms

  4. Epidioscope

  5. Graphics

Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

The opaque projector, epidioscope, epidiascope or episcope is a device, which displays opaque materials by shining a bright lamp onto the object from above.