Research On The Design And Practice Of Diversified Homework In Junior High School Chemistry Under The Background Of "double Reduction

In 2021,the "double reduction" policy was introduced by the General Office of the CPC Central Committee and the State Council.The policy is designed to reduce students’ excessive intellectual education,unnecessary knowledge,and practice time.It is used to improve students’ cognition and ability of physical education,aesthetic education,labor education,ideological and moral construction.The comprehensive development of students’ core literacy is promoted.In the past two years,taking middle school chemistry as an example,the homework management and design system is not very perfect.Traditional paper and pen work had been occupied as the dominant role.Therefore,this paper is based on the target requirements in the Compulsory Education Chemistry Curriculum Standard(2022 edition).It is upheld by the design concept of "reducing the burden and increasing the efficiency".The design and practice research of diversified assignments of middle school chemistry teaching material unit had been carried out.Firstly,the current situation of domestic and foreign operation design is analyzed through literature statistics.In recent years,China’s homework design research has been moving towards the direction of diversification,discipline and demonstration.A questionnaire was found for ninth grade students and chemistry teachers from two middle schools in Z city.In the daily planning of teachers,the homework design and test purpose is obvious.The structure of the operation design is not solid enough.It is difficult to meet the learning needs of students with different personalities.In the exercise training,the students have no clear understanding of the whole context of the unit.The learning objectives of the teaching material unit are blurred by the students.The evaluation method of the exercises is considered by the students to be dissatisfied.The core literacy target requirements in the new curriculum standard and the "burden reduction and efficiency increase" in the "double reduction" policy are truly realized.The mission of teachers still has a long way to go.According to the core literacy objectives,content and academic quality requirements in the new curriculum standards,the homework supplementary design function in the content of middle school chemistry is discovered.On the basis of the textbook exercises,diversified assignments other than paper and pen training are designed for further study.Training in hollowed questions such as long pen and paper assignments is reduced.Taking the textbook unit of "Fuel and Burning" as an example,the textbook unit is composed of textbook exercises and diversified homework.The reading category,deep thinking category,experimental operation category,investigation and research category,and interdisciplinary comprehensive practice exercises were covered.It expands the students’ knowledge.It promotes the transformation of students thinking concept from "solution" to "problem solving".Practice research and core literacy are evaluated.Finally,the level of students ’core literacy,teachers’ teaching level and auxiliary level are analyzed.The principle of diversified operation of target guidance,the principle of situational task,practice,overall complementarity as the main body are summarized.After the study,the practicality,interest,operability and life of the assignment design are improved.Student deep learning is promoted.The mysteries of the chemical world are discovered by students in cognitive conflict.Students’ core qualities are being developed.The purpose of "reducing the burden and increasing the efficiency" is achieved.It is expected that the diversified homework design scheme and the homework evaluation method of core literacy.It can be provided with some reference by the homework design of the frontline teachers.