Abstract As an important carrier of teaching content, chemistry textbooks involve various visual representations reflecting microscopic processes. Visual representation, with its intuitive, vivid and visual characteristics, can promote students to fully understand chemical concepts, so its accuracy and relevance directly affect students' learning. Ionization is the core concept in high school chemistry content, which is abstract and difficult to understand, and students often have heterogeneous thoughts when learning this content. Based on the investigation of students' understanding of sodium chloride ionization, the visual representation of sodium chloride solution ionization in junior and senior high school chemistry textbooks at home and abroad in different periods and versions is analyzed, and the horizontal and vertical comparative study is carried out, combined with the latest scientific and technological achievements, in an effort to provide some reference for the subsequent compilation of Chinese middle school chemistry textbooks.
HU Yu-Yang, SUN Ying. Analysis of Visual Representation of Ionization of Sodium Chloride Solution in High School Chemistry Textbook[J]. Chinese Journal of Chemical Education, 2024, 45(19): 1-9.