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How to Solve Mathematical Problems

Seven problem-solving techniques include inference, classification of action sequences, subgoals, contradiction, working backward, relations between problems, and mathematical representation. Also, problems from mathematics, science, and engineering with complete solutions.

Preface In the mathematics and science courses I took in college, I was
enormously irritated by the hundreds of hours that I wasted staring at problems
without any good idea about what approach to try next in attempting to solve
them. l thought ...

Arabic Thought and Its Place in History

Well-documented study of the mutual influence of Arabic and Western worlds during the Middle Ages traces the transmission of Greek philosophy and science to the Islamic cultures.

For the most part the true Arab party was, and still is, indifferent towards religion. “
The genuine Arab of the desert is, and remains at heart, a sceptic and a
materialist ; his hard, clear, keen, but somewhat narrow intelligence, ever alert in
its own ...

The Damascus Chronicle of the Crusades

Extracted and Translated from the Chronicle of Ibn Al-Qalanisi

This outstanding work on the First Crusade was written by an Arab scholar from an old and respected family of Damascus. Well-educated in literature, theology and law, he was twice elected mayor of the city and died when he was over 90 years of age in 1160. His Chronicle, translated by H. A. R. Gibb, is of special interest because it presents a contemporary Arab account of how the Crusaders fared while in Damascus. Derived from oral and written reports, the information is remarkable for its documentation. An informative introduction sets the scene just prior to invasion by the Crusaders. Because this original work still retains much material unused by later compilers, it remains an indispensable resource for students of the early Crusades.

This outstanding work on the First Crusade was written by an Arab scholar from an old and respected family of Damascus.

The Legend of Sleepy Hollow and Rip Van Winkle

Ichabod Crane faces the terror of the Headless Horseman, and Rip Van Winkle rises from a 20-year sleep to find a world vastly changed in these two delightful classics of American literature. Complete and unabridged, newly reset in easy-to-read type, with 6 new full-page illustrations.

Ichabod Crane faces the terror of the Headless Horseman, and Rip Van Winkle rises from a 20-year sleep to find a world vastly changed in these two delightful classics of American literature.

The Legend of Sleepy Hollow and Other Stories

Among the first tales by an American writer, the title story and "Rip Van Winkle" marked the entry of Washington Irving into world literature. Also includes "The Devil and Tom Walker," "The Spectre Bridegroom," and more, 15 short stories in all.

Among the first tales by an American writer, the title story and "Rip Van Winkle" marked the entry of Washington Irving into world literature.

Rip Van Winkle Coloring Book

Here, along with the complete text of this classic story are 30 Rackham illustrations rendered for coloring. Children can make their first thrilling acquaintance with the story as they color. Students and admirers of Irving and Rackham will enjoy the elfish portrayals of henpecked Rip and shrewish Dame Van Winkle.

Here, along with the complete text of this classic story are 30 Rackham illustrations rendered for coloring. Children can make their first thrilling acquaintance with the story as they color.

Alden Family Paper Dolls in Full Color

Seven charming dolls, 45 colorful costumes from the 1940s -- party dresses, sunsuits, rompers, sailor outfit, and more, plus accessories: wicker doll carriage, wooden train, more.

Seven charming dolls, 45 colorful costumes from the 1940s -- party dresses, sunsuits, rompers, sailor outfit, and more, plus accessories: wicker doll carriage, wooden train, more.

Locke Art Glass

A Guide for Collectors with Photographic Illustrations of 190 Examples

Superb, edited reproduction of rare original sales catalog from the workshop of one of America's premier glassmakers. Excellent photographs of exquisitely etched stemware, vases, pitchers, decanters, steins, etc. Price lists, biography of Locke, more. Invaluable aid for identifying, authenticating collectible Locke glass.

Excellent photographs of exquisitely etched stemware, vases, pitchers, decanters, steins, etc. Price lists, biography of Locke, more. Invaluable aid for identifying, authenticating collectible Locke glass.

The Club and Coral Mushrooms (Clavarias) of the United States and Canada

Standard reference: 90 species completely described from author s firsthand expert observations. 92 plates, 8 in color, identification keys."

White, or the tips yellowish, very brittle, densely clustered to single ; spores pip-
shaped to ovoid, variable in size and form, about 2.5-3.5 x 4-6. 5/1. ... .C.
vcrmiculata (p. 45 ) 5. Grayish or smoky flesh color, tips soon blackish: spores not
very dif- ...