Text and numerous detailed illustrations introduce and explain the scientific principles and workings of hundreds of machines.
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35 Results
Literary Form
35 Results
Describes 101 science experiments or activities that can be done with household items and easily found ingredients.
Text and numerous detailed illustrations introduce and explain the scientific principles and workings of hundreds of machines. Includes new material about digital technology.
An examination of how basic machines, buildings, bridges, musical instruments, telephones, computers (and more) work; includes directions for building working models.
Text and pictures introduce musical instruments from early times to the present--from pipes and flutes to electronic synthesizers.
Text and pictures introduce musical instruments from early times to the present--from pipes and flutes to electronic synthesizers.
Describes 101 science experiments or activities that can be done with household items and easily found ingredients.
Describes the construction and operation of an oil rig and the search for and discovery of petroleum.
Simple experiments demonstrate basic principles of magnetism.
Explains the principles of color and gives instructions for a variety of simple experiments.