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This site Building offers information on bridge design, engineering, construction, and history. It has photographs and diagrams that illustrate the many bridge types, discussions on bridge appearance, the forces on a bridge, oscillations of bridges, the problems encountered with bridge use and construction, and many other topics with links to related resources, including sites on individual bridges, specific types of bridges, bridge builders and designers, engineering institutes and societies.
NACE advances county engineering and management by providing a forum for exchange of ideas and teaching and resources aimed at improving service to the public, and monitors national legislation affecting county transportation/public works departments.
This free ebook is organized to start with specific, practical teaching applications and then lead to more general psychological theories. The advantage of this order is that people tend to learn from specifics to generalities that is, inductively. The disadvantage of this approach is that we may want to use some concepts to explain the advantages of particular teaching methods before the concepts have been explored.