1 Ocak 2019 Dergi makalesi Açık Erişim

Kertil, Mahmut; Erbas, Ayhan Kursat; Cetinkaya, Bulent

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        "affiliation": "Marmara Univ, Dept Math & Sci Educ, Istanbul, Turkey", 
        "name": "Kertil, Mahmut"
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      {
        "affiliation": "Middle East Tech Univ, Dept Math & Sci Educ, Ankara, Turkey", 
        "name": "Erbas, Ayhan Kursat"
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      {
        "affiliation": "Middle East Tech Univ, Dept Math & Sci Educ, Ankara, Turkey", 
        "name": "Cetinkaya, Bulent"
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    "description": "Forming part of a wider research study, the current study investigated prospective middle school mathematics teachers' ways of covariational reasoning on tasks involving simultaneously changing quantities. As the introductory theme of a larger unit on derivative, a model development sequence on covariational reasoning was designed and experimented with 20 participants in a mathematical modeling course offered to prospective teachers. The participants' developing abilities of covariational reasoning were documented under three categories: (i) identifying the variables, (ii) ways of coordinating the variables, and (iii) ways of quantifying the rate of change. The results revealed significant improvement in the prospective teachers' ways of identifying and coordinating the variables, and in quantifying the rate of change. Moreover, the results indicated that preference for a particular way of thinking in identifying and coordinating the variables determined the prospective teachers' way of quantifying the rate of change and thereby their level of covariational reasoning.", 
    "doi": "10.1080/10986065.2019.1576001", 
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      "issue": "3", 
      "pages": "207-233", 
      "title": "MATHEMATICAL THINKING AND LEARNING", 
      "volume": "21"
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