Development of Teaching Materials for an Experiment That Enables Observation of the Inhibition of Calcium Carbonate Formation by Calcifying Organisms due to Ocean Acidification and Its Assessment through Implementation in Senior High School Classes

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Other Title
  • 海洋酸性化によって石灰化生物が行う炭酸カルシウムの形成が阻害されることを観察できる実験教材の開発と高等学校での授業実践による教材の評価

Abstract

<p>The progress of ocean acidification caused by an increase in the CO2 concentration in the atmosphere inhibits calcium carbonate formation of calcifying organisms by decreasing the CO32– concentration in sea water. In this study, we conducted experiments to obtain the data required for the development of experimental teaching materials on inhibition of calcium carbonate formation by calcifying organisms. Using the results of these experiments, teaching materials on inhibition of calcium carbonate formation by calcifying organisms, which can be used in regular science classes, were developed. The teaching materials developed consist of (1) “Heat the shells strongly with a burner to make CaO and then generate an CaCO3 aqueous solution using it”, (2) “Dissolve some different volumes of CO2 in the CaCO3 aqueous solution” and (3) “Observe that after dissolving CO2 the CaCO3 aqueous solution changes from transparent to cloudy to transparent in the order of the dissolved volume”. To evaluate the teaching materials developed, a science class using them was implemented in senior high schools, and questionnaires were given to students before and after classes. The results of the questionnaires indicate that the developed material is effective for environmental education.</p>

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Details 詳細情報について

  • CRID
    1390577215795928064
  • DOI
    10.14935/jssej.47.3
  • ISSN
    21885338
    03864553
  • Text Lang
    ja
  • Data Source
    • JaLC
    • KAKEN
  • Abstract License Flag
    Disallowed

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