Design And Practice Research Of Junior Middle School Chemistry Experiment Supported By Wechat Public Platform

The junior high school chemistry experiment teaching mode based on WeChat public platform has a good application prospect in junior high school chemistry experiment teaching.This research is based on autonomous learning theory and constructivism learning theory.By using the methods of literature,questionnaire and practical research,On the current situation of chemistry experiment teaching in grade 3-there are many dangerous and complicated experiments.The inability to conduct effective classroom demonstrations has seriously restricted the cultivation and promotion of students' chemical literacy.For analysis,The WeChat public platform has been established to assist junior high school chemistry experiment teaching.Based on the characteristics of concentrated sulfuric acid,the reducibility of carbon monoxide,the preparation of oxygen from hydrogen peroxide,the determination of oxygen content in air,and the exploration of the preparation and properties of carbon dioxide,five experimental breakthrough points are discussed.a specific case was designed and an empirical study was carried out.Some meaningful research conclusions and teaching suggestions are obtained.The research conclusion is as follows:(1)Apply WeChat public platform to assist junior high school chemistry experiment teaching mode in dangerous or complicated experiment teaching.to enable students to observe experimental phenomena safely and effectively.(2)Through experimental video or pictures and texts,The teaching process is intuitive,clear and vivid.so that students can clearly understand the main purpose of each experiment.the principle and how to apply it in practice,effectively stimulate students' interest in chemistry experiment courses.(3)The WeChat-based public platform assists junior high school chemistry teaching experiment teaching.using homework tracking guidance and knowledge development,the experimental content is organically combined with the professional learning knowledge,fully mobilize the enthusiasm and initiative of students in class,before class and after class.effective Improvement of Students' Chemical Core Literacy.Combined with the implementation of teaching,the following teaching suggestions are summarized:(1)when teachers carry out teaching design,We should start with the integration of resources before class,the exploration and design in class,and the follow-up and guidance after class.considering the differences of students and the complexity of experiments,so as to ensure that the whole teaching process is highly compatible with the actual situation of students and teaching objectives,thus ensuring the efficient generation of flip classes.(2)Teachers can adopt the core teaching strategies studied in this paper,such as preview before class,to stimulate students' interest in learning,expand their knowledge vision,actively cultivate students' self-study ability,create opportunities for students to participate in junior high school chemistry experiment courses(3)in depth.In the process of teaching practice,according to the actual situation,targeted and flexible teaching,avoid students' aesthetic fatigue.The results are helpful to improve the teaching quality of chemistry experiment in junior middle school and students' academic achievement,to help students master the experiment operation,to solve the experiment problems,and to have important reference value to the chemistry experiment teaching in junior middle school.