The development of middle and high school students’ concept images and hierarchical classification skills regarding quadrilaterals: A case study of the trapezoid

Birgin O., Özkan K.

JOURNAL OF EDUCATIONAL RESEARCH, pp.1-18, 2026 (SSCI, Scopus)

  • Publication Type: Article / Article
  • Publication Date: 2026
  • Doi Number: 10.1080/00220671.2026.2695058
  • Journal Name: JOURNAL OF EDUCATIONAL RESEARCH
  • Journal Indexes: Academic Search Ultimate (EBSCO), Social Science Premium Collection (ProQuest), Education Collection (ProQuest), Education Source Ultimate (EBSCO), Health Research Premium Collection (ProQuest), Scopus, Psychology & Behavioral Sciences Collection (EBSCO), Sociology Source Ultimate (EBSCO), Agricultural & Environmental Science Database, Social Sciences Citation Index (SSCI), IBZ Online, Periodicals Index Online, ABI/INFORM, Education Abstracts, Educational research abstracts (ERA), ERIC (Education Resources Information Center), Index Islamicus, EBSCO Education Source, MLA - Modern Language Association Database, Psycinfo, MLA International Bibliography
  • Page Numbers: pp.1-18
  • Uşak University Affiliated: Yes