Application Of Hand-held Technology In Middle School Chemistry Teaching Based On Real Situation

Chemistry is a subject based on experiment.With the advent of information age,chemical experiment is also moving towards a new development platform.Since the 21 st century,hand-held technology has developed rapidly in the field of physics,biology and chemistry experiments in China with its advantages of convenience,efficiency and simplicity,and has become a favorable helper for teaching practice research.Under the background of new curriculum reform,the new curriculum standard emphasizes the exploration of chemical experiments in the real situation.Therefore,this paper takes the real situation as the background,designs the experiment cases with the help of hand-held technology and carries out practical teaching activities,and tries to explore the effective teaching mode and method of hand-held technology in classroom practice teaching.The practical research chooses all students in class 1(1)of Meishan No.This paper consists of six parts.The first part is the introduction,including the reason of topic selection,the development status and analysis of hand-held technology at home and abroad,research purpose and significance,research content and methods;the second part is the overview of related theories,including the concept definition and theoretical basis;the third part is the design of three experimental cases,including the determination of iron content in Auricularia auricula,exploring whether the preservative film is semi permeable film,and improving the laboratory Oxygen production;The fourth part is the teaching case practice research,which is the focus of this paper.Using the existing hand-held technology digital instruments(temperature sensor,chroma sensor,conductivity sensor)of the practice school,the students of grade one(1)of senior high school are organized to carry out group experimental activities,and three specific experimental cases are used to show the process and effect of practical teaching activities.The fifth part is the questionnaire survey and interview,and the main content is as follows The sixth part is the conclusion and prospect.The practical research draws the following conclusions:(1)hand-held technology practice teaching activities based on real situation can be carried out in the practice school,which can be carried out by group cooperation,theme exploration activities,classroom teaching and other methods.(2)By carrying out hand-held technology practice activities,students’ core literacy has been developed,teachers’ normal skills have been improved,and a new development platform has been obtained for the school to carry out teaching and research activities.Finally,the author deeply reflects on the practical research,finds that there are many deficiencies in the research,and puts forward some suggestions for improvement.