This is part 2 of a 4-part series from an educational film strip produced in 1977. Part 1 is entitled "Ideas Come From Dreams".
This series was produced for use in a school environment and would have been presented using a film strip projector with which each image was manually advanced as prompted by an audio cue from an accompanying audio cassette.
For this video series I have sequenced the film strip images in sync with the accompanying audio, but I have removed the audio cue "beeps" from the soundtrack.