| In the context of high school curriculum reform,college entrance examination reform and social "double reduction" policy,experts and scholars have actively explored innovative assignment design,and unit assignment design is one of them.Looking at the research on homework design in the past 30 years,we can find that there is a lack of theoretical research on homework design at home and abroad.At the same time,the unit assignments that emerged with the curriculum reform have received the attention of domestic experts and scholars,but their research results are limited and need further improvement.To this end,this paper takes high school mathematics as the starting point,and explores the theory and practice of unit assignment design in high school mathematics on the basis of existing research.In order to understand the current situation of high school mathematics homework design,this paper uses a combination of literature,interview,questionnaire and text analysis methods to study four aspects of homework values,homework design practices,homework design quality and homework review feedback.The research results show that there are problems of lack of theoretical and standardized design,difficulty,single form and insufficient feedback in high school mathematics homework.The current problems of mathematics homework are also considerations for the design of unit assignments.In this regard,this paper takes constructivist learning theory,humanistic learning theory,and nearest developmental zone theory as the theoretical guidance,and the General High School Mathematics Curriculum Standards and the Chinese College Entrance Examination Evaluation System as the design basis,and proposes three major principles for the design of unit assignments: the principle of combining wholeness and scientificity,the principle of combining subjectivity and diversity,and the principle of combining basicity and hierarchical order,and incorporates these three principles These three principles are integrated into all aspects of the unit assignment design,including assignment unit planning,assignment goal analysis,assignment attribute analysis,assignment structure analysis,and assignment review and feedback.Based on the theoretical study of unit assignment design,this paper analyzes the case design,and implementation effects of the unit assignment based on the unit "Basic Elementary Functions" as an example.After a three-month educational experiment,the students’ performance improved significantly,which shows that the theory of unit assignment design is feasible and the unit assignments designed according to the theory have practical application value.This paper is a theoretical exploration and practical investigation of high school mathematics homework design focusing on the word "unit",which is not only a homework improvement proposal in response to the call for "reducing the burden and increasing the efficiency" of the society,but also an attempt to integrate the basic concepts of curriculum reform and the evaluation system of Chinese college entrance examinations into the theory of homework design.Therefore,it is not only a concrete plan for optimizing homework design,but also a basic material for the construction of homework design theory,which,to a certain extent,enriches the study of unit homework design and even unit teaching design. |