Abstract:

Based on the characteristics of halogens, classroom teaching is carried out by developing ideological and political educational content containing the history of the discovery of the halogen, permeating the teaching process of elemental chemistry with basic theoretical chemistry, constructing an "online + offline" mixed mode of teaching through the application of network resources, explaining halogens and their compounds with practical applications, guiding students to learn to induce and summarize the learned content, etc., thereby effectively motivating students to learn the scientific character of scientists, stimulating students' enthusiasm for learning, improving the quality of classroom teaching, and enhancing the self-learning ability of students.

Key words: Halogen, Teaching reform, Ideological and political education, Elements chemistry