overhead projector

Footage of a male teacher engaging his students with humor and…

Footage of female teacher showing classroom projection equipment.Clip…

Voice over talking about the use of a projector to view slides from…

Voiceover discusses the slides that were made from a negative produced…

CU of students in class room. Different transparencies are placed on an…

Close up of hands holding a home made projection slide with three…

Medium shot of a woman pasting an image onto a piece of paper. Close…

This clips shows and explains the progression of a thinking machine, an…