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Reference.org
Man: A Course of Study
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<p>Man: A Course of Study, usually known by the acronym MACOS or M.A.C.O.S., was an American <a href="/facts/Humanities/nErauGkd">humanities</a> teaching program, initially designed for <a href="/facts/Middle_school/l1I61k1U">middle school</a> and upper elementary grades. It was popular in the United States and United Kingdom in the 1970s. </p>