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4STEM EDUCATION ACT OF 2015[DB/OL]. https://www.congress.gov/ bill/114th-congress/house-bill/1020/tex,2015-10-07.
5W.Bertelsmann Verlag. Hauke Sturm Design, Perspektive MINT-- Wegweiser fur MINT-Forderung und Karrieren in Mathematik, Informatik, Naturwissenschaften und Technik.Bundesministerium fur Bildung und Forschung[M].Berlin: Bundesministerium Fur Bildung Und Forschung,2012.
8Regents of the University of Colorado, Curricular Unit: Air Pollution [DB/OL].https://www.teachengineering.org/view_curricularunit. php?url=colleetion/cub_/currieular_units/cub_air/eub_air_curricularunit.xml,2016-02-29.
10Regents of the University of Colorado, Curricular Unit: Sound [DB/OL].https://www.teachengineering.org/view_currieularunit. php?url=collection/cub /curricular units/cub_sound/eub_sound_ curricularunit.xml,2016-02-19.