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  2. National Council of Teachers of Mathematics - Wikipedia

    en.wikipedia.org/wiki/National_Council_of...

    NCTM publishes three official journals. All are available in print and online versions. Mathematics Teacher: Learning and Teaching PK-12.According the the NCTM, this journal "reflects the current practices of mathematics education, as well as maintaining a knowledge base of practice and policy in looking at the future of the field.

  3. Mathematics - Wikipedia

    en.wikipedia.org/wiki/Mathematics

    A great many professional mathematicians take no interest in a definition of mathematics, or consider it undefinable. There is not even consensus on whether mathematics is an art or a science. Some just say, "mathematics is what mathematicians do". [166] [167] A common approach is to define mathematics by its object of study. [168] [169] [170 ...

  4. Mathematics education in the United States - Wikipedia

    en.wikipedia.org/wiki/Mathematics_education_in...

    Mathematician George F. Simmons wrote in the algebra section of his book Precalculus Mathematics in a Nutshell (1981) that the New Math produced students who had "heard of the commutative law, but did not know the multiplication table." [205] By the early 1970s, this movement was defeated. Nevertheless, some of the ideas it promoted still lived on.

  5. Crossword - Wikipedia

    en.wikipedia.org/wiki/Crossword

    The book was promoted with an included pencil, and "This odd-looking book with a pencil attached to it" [43] was an instant hit, leading crossword puzzles to become a craze of 1924. To help promote its books, Simon & Schuster also founded the Amateur Cross Word Puzzle League of America, which began the process of developing standards for puzzle ...

  6. Adult education - Wikipedia

    en.wikipedia.org/wiki/Adult_education

    Exemplary situation – a workshop, the Tertiary Education Union (TEU) Annual Conference in Wellington, New Zealand in 2012. Adult education, distinct from child education, is a practice in which adults engage in systematic and sustained educating activities in order to gain new knowledge, skills, attitudes, or values. [1]

  7. The last of the non-avian dinosaurs died 66 million years ago in the course of the Cretaceous–Paleogene extinction event, whereas the earliest members of the genus Homo (humans) evolved between 2.3 and 2.4 million years ago. This places a 63-million-year expanse of time between the last non-avian dinosaurs and the earliest humans.

  8. Unit of measurement - Wikipedia

    en.wikipedia.org/wiki/Unit_of_measurement

    The former Weights and Measures office in Seven Sisters, London Units of measurement, Palazzo della Ragione, Padua. A unit of measurement, or unit of measure, is a definite magnitude of a quantity, defined and adopted by convention or by law, that is used as a standard for measurement of the same kind of quantity. [1]

  9. Major depressive disorder - Wikipedia

    en.wikipedia.org/wiki/Major_depressive_disorder

    Major depressive disorder affected approximately 163 million people in 2017 (2% of the global population). [8] The percentage of people who are affected at one point in their life varies from 7% in Japan to 21% in France. In most countries the number of people who have depression during their lives falls within an 8–18% range.

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