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  2. Active and passive transformation - Wikipedia

    en.wikipedia.org/wiki/Active_and_passive...

    In the passive transformation (right), point P stays fixed, while the coordinate system rotates counterclockwise by an angle θ about its origin. The coordinates of P ′ after the active transformation relative to the original coordinate system are the same as the coordinates of P relative to the rotated coordinate system.

  3. English auxiliary verbs - Wikipedia

    en.wikipedia.org/wiki/English_auxiliary_verbs

    The first English grammar, Bref Grammar for English by William Bullokar, published in 1586, does not use the term "auxiliary" but says: All other verbs are called verbs-neuters-un-perfect because they require the infinitive mood of another verb to express their signification of meaning perfectly: and be these, may, can, might or mought, could, would, should, must, ought, and sometimes, will ...

  4. Passive voice - Wikipedia

    en.wikipedia.org/wiki/Passive_voice

    A passive voice construction is a grammatical voice construction that is found in many languages. [1] In a clause with passive voice, the grammatical subject expresses the theme or patient of the main verb – that is, the person or thing that undergoes the action or has its state changed. [2]

  5. English grammar - Wikipedia

    en.wikipedia.org/wiki/English_grammar

    The personal pronouns retain morphological case more strongly than any other word class (a remnant of the more extensive Germanic case system of Old English). For other pronouns, and all nouns, adjectives, and articles, grammatical function is indicated only by word order , by prepositions , and by the " Saxon genitive or English possessive ...

  6. Passive learning - Wikipedia

    en.wikipedia.org/wiki/Passive_learning

    The effectiveness of traditional instruction and passive learning methods have been under debate for some time. [2] The modern origins of progressive education, with active learning as a component, can be traced back to the 18th century works of John Locke and Jean-Jacques Rousseau, both of whom are known as forerunners of ideas that would be developed by 20th century theorists such as John Dewey.

  7. Communicative language teaching - Wikipedia

    en.wikipedia.org/wiki/Communicative_language...

    Oral activities are popular among CLT teachers compared to grammar drills or reading and writing activities, because they include active conversation and creative, unpredicted responses from students. Activities vary based on the level of language class they are used in. They promote collaboration, fluency, and comfort in the TL.

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  9. Coordinate system - Wikipedia

    en.wikipedia.org/wiki/Coordinate_system

    The coordinates are taken to be real numbers in elementary mathematics, but may be complex numbers or elements of a more abstract system such as a commutative ring. The use of a coordinate system allows problems in geometry to be translated into problems about numbers and vice versa; this is the basis of analytic geometry. [3]