problem solving

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Flags of the countries of the world (flagpoles).

How Many Countries Are There in the World?

July, 2006, Launch of Space Shuttle Discovery STS-121. See attached for full caption information.

Will Light-Speed Space Travel Ever Be Possible?

Queen Elizabeth II addresses at opening of Parliament. (Date unknown on photo, but may be 1958, the first time the opening of Parliament was filmed.)

All 119 References in “We Didn’t Start the Fire,” Explained

Illustration for Demystified "How Dangerous is Quicksand"

How Deadly Is Quicksand?

Candles Burning On Table In Church

What Is the Most Widely Practiced Religion in the World?

All Saints Day. All Souls Day. Candles in cemetery in Poland on All Saints Day, November 1. All Souls Day, November 2. Christian church, All Hallows, Solemnity of All Saints, Feast of All Saints, purgatory, Roman Catholic church

7 Unique Burial Rituals Across the World

The Colosseum, Rome, Italy. Giant amphitheatre built in Rome under the Flavian emperors. (ancient architecture; architectural ruins)

New Seven Wonders of the World

problem solving: Related Content

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Topics

insight Gordian knot principle learning trial-and-error learning means-ends analysis working-forward approach working-backward approach generate-and-test method British Museum technique reason heuristic

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learning theory: Principle learning

Key People

Wolfgang Köhler

German psychologist

Édouard Claparède

Swiss educator and psychologist