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Beyond the use of an explanatory key accompanying submicroscopic representations

Vesna Ferk Savec and Špela Hrast and Iztok Devetak and Gregor Torkar (2016) Beyond the use of an explanatory key accompanying submicroscopic representations. Acta chimica slovenica, 63 (4). pp. 864-873. ISSN 1318-0207

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    Abstract

    When learning chemistry, students encounter various visualizations introducing scientific concepts and processes unobservable to the naked eye. It is often assumed that these visualizations support students’ understanding and enable them to solve problems more efficiently. The research presented here investigates students’ use of an explanatory key while solving tasks based on submicroscopic representations. The following features of the explanatory key were examined: 1) colored versus black-and-white, and 2) pictorial versus textual. Eye-fixation patterns and students’ verbal explanations indicated that the presence of color in the key does not influence students’ task solving. However, significant differences were observed with regard to a textual versus pictorial key used in the tasks: students spent more time and fixated more frequently on the key while solving tasks using a textual key in comparison to a pictorial key. The results indicate that the type of explanatory key might play an important role in revealing students’ representational competence with regard to submicroscopic representations.

    Item Type: Article
    Keywords: chemistry, learning
    Related URLs:
    URLURL Type
    https://journals.matheo.si/index.php/ACSi/article/view/2835/1127Alternative location
    http://cobiss5.izum.si/scripts/cobiss?command=DISPLAY&base=50126&rid=11383113&fmt=11&lani=siAlternative location
    Institution: University of Ljubljana
    Department: Faculty of Education
    Divisions: Department of Biology, Chemistry and Home Economics > Chair of Biology and Chemistry
    Item ID: 4290
    Date Deposited: 12 Dec 2016 15:04
    Last Modified: 12 Dec 2016 15:04
    URI: http://pefprints.pef.uni-lj.si/id/eprint/4290

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