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Dual language — is a form of education in which students are taught literacy and content in two languages. The majority of dual language programs in the United States teach in English and Spanish, although increasing numbers of programs use a partner language… … Wikipedia
Dual inheritance theory — (DIT), also known as gene culture coevolution, was developed in the late 1970s and early 1980s to explain how human behavior is a product of two different and interacting evolutionary processes: genetic evolution and cultural evolution. DIT is a… … Wikipedia
Dual carriageway — A typical British dual carriageway with central barrier on the A63(T) near Hull, England … Wikipedia
Dual diagnosis — This article is about co occurring mental disorder and substance abuse. For the general definition of any two diagnoses together, see Comorbidity. The term dual diagnosis is used to describe the comorbid condition of a person considered to be… … Wikipedia
Dual monarchy of England and France — The Royal Arms of England during Henry VI s reign The dual monarchy of England and France existed during the latter phase of the Hundred Years War when Charles VII of France and Henry VI of England disputed the succession to the throne of France … Wikipedia
Dual polyhedron — The dual of a cube is an octahedron, shown here with vertices at the cube face centers … Wikipedia
Dual-sector model — This article is about the economic model. For the diagram representing atomic bonding, see Lewis structure. Sir W. Arthur Lewis Sir William Arthur Lewis, official Nobel Prize photo … Wikipedia
Dual purpose gun — The Mark 37 Model 6 5 inch dual purpose gun on display at the National Museum of the Pacific War. The gun had a range of over 6 miles and could fire 22 rounds a minute. A dual purpose gun is a naval artillery mounting designed to engage both… … Wikipedia
Primary State Highways (Washington) — infobox road state=WA type=PSH route=1 highway name=State highways in Washington (1937 1970) map notes=State highways in 1970: primary in red and secondary in purplePrimary State Highways were major state highways in Washington state. They were… … Wikipedia
Dual dating — Not to be confused with Double dating. In historical materials, dates will often be indicated with what appears to be duplicate, or excessive digits, sometimes separated by a hyphen or a slash. This is often referred to as double dating.[1] The… … Wikipedia
