A childhood feve leaves a very bright Helen Keller blind and deaf, cutting her off from human communication until Anne Sullivan helps her end her isolation.
Alphabetically arranged entries explain how various products such as lawn mowers, postage stamps, and zippers are manufactured. Each entry includes information on the product's history and the steps involved in its manufacture.
Alphabetically arranged entries explain how various products such as blue jeans, compact discs, and guitars are manufactured. Each entry includes information on the product's history and the steps involved in its manufacture.
An introduction to physical, earth, and space sciences; weather and climate; living organisms; the environment; and the human body, through reproducible diagrams and drawings.