Textbook

A textbook is a manual of instruction or a standard book in any branch of study. They are classified by both the target audience and the subject. Textbooks are usually published by specialty printers to serve every request for an understanding of every subject that can be taught. It is a big business that requires mass volume sales to make the publications profitable. Although most textbooks are only published in printed format with hard covers, some can now be viewed online.

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Textbooks emerged as teaching instruments with Johann Gutenberg's invention of the printing press. Early textbooks were used by teachers, who relied on the books for lesson guidance. Later books were printed for children, and have become the primary teaching instrument for most children since the 19th century.

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Johann Gutenberg: Johannes Gensfleisch zur Laden zum Gutenberg (born. circa 1398 – died probably February 3, 1468 Mainz) was a German metal-worker and inventor who achieved fame for his contributions to the technology of printing during the 1440s, including a type metal alloy and oil-based inks, a mould for ca...

Printing press: The printing press is a mechanical device for printing multiple copies of a text on rectangular sheets of paper. It was first invented in China in 1041. It was reinvented in the West by a German goldsmith and eventual printer, Johann Gutenberg in the 1450s. Apart from Gutenberg, the Dutch Laurens Ja...

19th century: :Alternative meaning: Nineteenth Century (periodical)...