Research On Characteristics Of Network Structure Of Knowledge Points In Chemistry Textbooks

Based on the literature and text analysis methods,this study uses a combination of quantitative analysis and qualitative analysis to select the textual content of the textbook The Principle of Chemical Reactions published by the Jiangsu Education Press and the textbook Chemistry: Concepts and Applications of the United States.The content of the principle of chemical reactions(not including after-school exercises)is studied.This study attempts to apply complex network theory to textual research in textbooks.In the research process,the textual content is extracted and summarized as knowledge points and used as the nodes of the network.According to the relationship between the knowledge points,the nodes are connected into a network,and the lengthy text content is abstracted as a network of knowledge points.Using the relevant parameters of the network to describe the characteristics of the network,the structural characteristics of the network of knowledge points in the textbooks are derived,and the core nodes are found to provide references for the compilation,teaching and learning of textbooks.The study found that the network of knowledge points in the two editions of textbooks differs greatly in the scale of the network,and the attribution of core nodes is different.However,the distribution of nodes in distance,the transmission of network information,and the degree of network centralization are similar.In general,the two editions of textbooks have built up different networks of knowledge points for students' learning.The domestic textbook has provided more knowledge and infiltration of knowledge points,while the foreign textbook has become more prominent.