The Construction And Practice Of The Core Knowledge Mind MAP Of Junior Middle School Chemistry

In the process of teaching,how to implement the requirements of quality-oriented education,so that students can not only acquire knowledge but also achieve the development of various abilities,improve students' scientific literacy,is the problem that every educator is concerned about.Chemical core knowledge mind mapping can help students to form a more systematic knowledge network which consists of fragmentary knowledge,clearly reflect the correlation between knowledge points,can promote the development of students' logic thinking ability and innovative thinking ability,stimulate students' interest in learning,improve the learning efficiency,the development of science inquiry ability.Therefore,the purpose of this study is to improve the students' scientific literacy for the purpose,analyzing the connotation of the junior high school core chemistry knowledge,grasps the core content of knowledge,using literature research,case analysis,junior middle school chemistry experiment contrast method research core knowledge construction of mind mapping,design and construction method of the mind map,to help teachers and students to enhance structural and systematic understanding of junior high school chemistry teaching textbook.Thesis first describe the concept of chemical core knowledge and mind mapping,this thesis analyses the present situation of junior high school chemistry teaching,the necessity of mind mapping construction about the core knowledge and role in the teaching,the method of mind mapping construction was proposed,that is: get the core knowledge,aiming at improving the students' scientific literacy,find the key nodes with close links to the core knowledge,building knowledge network system,and choose a computer drawing method or hand-painted method to map the mind mapping.Secondly,the review and carding class in the chemistry review class is selected.Taking the core materials that are relatively representative in the chemistry core knowledge of junior high school as an example,four activities(brainstorming,thinking in various aspects;Organize and classify,construct the map;Draw inferences and conclude by analogy;Explore the construction process and methods of mind mapping for metallic,nonmetallic and nonmetallic oxides,and further summarize the construction model of core material mind mapping.Then,the core knowledge of "reaction between acid and base" in the chapters of acid,base and salt was selected for teaching design,and mind mapping was carried out throughout the teaching process to reflect the practical application of mind mapping of core knowledge in teaching.Finally,two classes are selected for experiments,and the teaching effect of core knowledge mind mapping is evaluated.The research results show that the construction of a mind mapping is helpful for students to master knowledge,improve the comprehensive ability to solve problems,and draw the following conclusions:(1)the mind map to core knowledge according to certain steps and methods of construction,that is: get the core knowledge,aiming at improving the students' scientific literacy,find the key nodes with close links to the core knowledge,building knowledge network system,and choose a computer drawing method or hand-painted method to map the mind mapping.(2)applying the mind map of core knowledge to the teaching class can help students grasp the key points and clarify their thoughts in a large number of trivial knowledge,and it is easier,faster and more convenient to master the core knowledge of junior high school chemistry,forming a knowledge network and helping students improve their scientific literacy.