Research On The Application Of Conception Establishment Based On Core Literacy In The First-Round Review Of Elemental Compound

The main teaching task of teachers at senior grade three is to guide students to systematically review the knowledge being learned before.If teachers only simply repeat and enumerate the knowledge before in class,it would affect the interest of students in learning and could not improve students'ability to extract effective information from real situations,analyze and solve the problem,which not only make students not meet the requirements of college entrance examination but also not comform to the basic requirement of cultivating all-round students in the 21~stt century,especially neglects the cultivation of core literacy and establishment of the chemical conception.At present,the review of chemical knowledge generally adopts the mode of special topic review and emphasizes the knowledge teaching and neglects the conception establishment,which transforms the review process to exercise practice.It makes it difficult for most students to solve comprehensive questions at college entrance examination.Especially during the first-round review of elemental compound knowledge,most teachers only focus on the character and mutual transformation of elements and their compounds and let students remember the chemical equations and do exercise,however weaken the cultivation of students'problem-solving ability,the promotion of core literacy and the establishment of chemical conception,which results in the mistakes in examination.To solve this problem,the author first analyzes the connotation of core literacy and chemical conception and the basis of their application in the first-round review,then propose and build the teaching design model based on the chemical conception establishment of core literacy.The proposed model has been applied in in the real first-round review.The main work of this thesis are as follows:First,the author analyzes the connotation of core literacy and chemical conception.By reviewing amounts of references and summarizing teaching experience at senior high school,author concluded that the core literacy includes macro identification and micro analysis,change conception and balance thought,evidence reasoning and model cognition,scientific exploration and innovation consciousness,scientific attitude and social responsibility and chemical conception includes senses of element,variation,particle,experiment,character determined by structure and sense of worth for chemistry,which should be grasped by students.Teachers should combine these with specific chemical knowledge during the teaching process so that students can grasp both knowledge and core literacy.Author further deeply analyze the theorical and realistic basis of the application of chemical conception establishment based on core literacy in the first-round review and preliminarily verified the feasibility of the teaching design model.Then,author compared and summarized advantages and disadvantages of the existing teaching design models.On the basis of these,the teaching design model based on chemical conception establishment of core literacy was proposed and built.The proposed model includes design of teaching goals,question situation,student activities and teaching evaluation.Last,author designed a detailed teaching scheme and choose the iron and its compounds teaching during the first-round review as the studied case.Two class are teached using traditional and new proposed teaching design scheme respectively and teaching effectiveness is quantitively evaluated based on students'performance at class,test results and attitude to teaching mode.Results show that the proposed teaching mode greatly improves the degree of involvement in class and the learning efficiency of students.The total test scores of the experimental class are significantly higher than that of the control class,indicating that there are certain differences between two classes in terms of the application of knowledge in the test.Students generally think that class teaching includes more and large-span contents and requires higher thought for them under this new review mode.Even so,students are willing to this new review mode and have great confidence in being able to solving chemical questions in examination.