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Effective agricultural education begins with organization and structure. Success is not a random act or merely an artful performance of the sage on the stage. Effective teaching which will result in effective learning must have a known organizational pattern and apparent structure. The "discovery" of the structure of DNA brought a new level of knowledge to biology. As Watson and Crick wrote in 1953, "the double helix structure has novel features which are of considerable interest. . . . It has not escaped our notice that the specific pairing we have postulated immediately suggests a possible copying mechanism for the genetic material." By understanding the organization and structure of …