Comparison of the Difficulty of Redox Reaction in Chinese and American Textbooks Based on Flow Map
WANG Jiao-Yang1, YAN Chun-Geng2, CHEN Xiao-Na1, ZHOU Qing1
1. School of Chemistry & Chemical Engineering, Shaanxi Normal University, Xi'an 710119, China;
2. Tongfang CNKI(Beijing) co., LTD. Shaanxi branch, Xi'an 710065, China
Abstract Flow Map's quantitative statistics of the content difficulty of "redox reaction" in Chinese and American textbooks showed that significant differences existed in the integration extent and the representation depth of Chinese and American textbooks, which indicated that higher degree of the latter, namely the relative difficulty of American textbooks was smaller; while the qualitative evaluation manifests that American textbooks which took the "electron in chemical changes" as the understanding core constructed a cognitive context "gain and loss of oxygen-electronegativity of oxygen and gain or loss of electron-oxidation number and electron gain or loss", which applied the "electronegativity" as the advance organizer and integrates a large number of application knowledge (oxidation) by using information processing strategies, such as comparison and contrast, context reasoning and interpretation.
WANG Jiao-Yang, YAN Chun-Geng, CHEN Xiao-Na, ZHOU Qing. Comparison of the Difficulty of Redox Reaction in Chinese and American Textbooks Based on Flow Map[J]. Chinese Journal of Chemical Education, 2018, 39(17): 14-17.
