Academy-T1 - Academic Vocabulary: a small piece of film in a frame that you shine a light through to show a picture on a screen or wall

Question

a small piece of film in a frame that you shine a light through to show a picture on a screen or wall

Tuncay Günaydın · Accepted Answer

slide,_,The speaker showed us some interesting slides of the new building.

A small piece of film in a frame that you shine a light through to show a picture on a screen or wall