The Knowhow books

Describes the construction and operation of simple puppets. Includes suggestions for three open-ended plays.

Directions for making toys, machines, models, and games, most of which can be constructed with materials found at home.

Plans and patterns for simple paper and cardboard airplanes. Includes tips on flying, launching, and balancing.

Introduces the basics elements of crime detection, including searching for fingerprints, interviewing witnesses, using clues, collecting evidence, and international cooperation.