领导这项新调查的来自密歇根州立大学的施密特说：“在美国的数学和科学教育实践中，没有一种理智而统一的观念。”

Schmidt of Michigan State University, who led the new analysis, said, "no single intellectually coherent vision dominates U.S. educational practice in math or science."

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其次，学校的每一门教育科目都是系统的，如语文、数学、科学和哲学。

Secondly, every subject of education in school is systematic, such as Chinese, mathematics, science and philosophy.

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每一门教育科目都由学校系统地开设，例如语文、数学、科学和哲学。

Every subject of education in school is systematic, such as Chinese, mathematics, science and philosophy.

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