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Direct linkMthethwa-Kunene, Eunice; Onwu, Gilbert Oke; de Villiers, Rian – International Journal of Science Education, 2015
This study explored the pedagogical content knowledge (PCK) and its development of four experienced biology teachers in the context of teaching school genetics. PCK was defined in terms of teacher content knowledge, pedagogical knowledge and knowledge of students' preconceptions and learning difficulties. Data sources of teacher knowledge base…
Descriptors: Science Teachers, Biology, Pedagogical Content Knowledge, Genetics
Furio-Mas, Carles; Calatayud, Maria-Luisa; Barcenas, Sergio L. – Journal of Chemical Education, 2007
By the end of their high school studies, students should be able to understand macroscopic and sub-microscopic conceptualization of acid-base behavior and the relationship between these conceptual models. The aim of this article is to ascertain whether grade-12 students have sufficient background knowledge to explain the properties of acids,…
Descriptors: Concept Mapping, Chemistry, Science Instruction, High School Students
