小学校・中学校・高等学校教師の統計的リテラシーに関する調査研究 : 「ばらつき(ちらばり)」に係る教員研修の必要性を探る

抄録

Gonzalez and Isoda (2011a) proposed variability as one of the key ideas for improving the teaching of statistics as well as for developing statistical literacy for the knowledge-based society. In order to improve, teachers need to understand and teach variability in their mathematics classes. This survey, grounded on the framework of conceptualization of variability proposed by Shaughnessy (2007), selected survey tasks based on previous researches. Through this survey we examined teachers' statistical literacy from the viewpoint of variability and found that, although there are specialized mathematics teachers in junior and senior high school, their achievements were very low; this was also the case with elementary school teachers, who do not have any specialization in mathematics. Based on the survey's results, this paper proposed the necessity of in-service teacher education in statistics.