A Study On The Establishment Of The Test Questions Of The Calculation Thinking Skills Measurement In Primary And Secondary Schools

The 2017 edition of the information technology curriculum standards for full-time ordinary high schools will integrate computational thinking into the core quality of the four disciplines.As the course objective,computational thinking aims to cultivate and improve students'ability to solve practical problems with computational thinking.We know that thinking is not easy to measure,but ability can be measured.Therefore,how to measure the computational thinking skills of primary and secondary school students has become one of the focal points of teaching.This paper focuses on this,trying to study the questions used in the computational thinking test.In this paper,literature analysis,quantitative analysis,content analysis,from the examination question compilation method and the influence factors of the difficulty of the two aspects of the examination question compilation research.First of all,this study will calculate thinking skills into abstraction,decomposition,procedural,summary and evaluation of five parts,it is concluded that small high three study in the early period of five to calculate weight of the thinking skills and level,and then on the basis of combining Bebras testing shows each skill evaluation method,specific to the overall design train of thought and way of examining test subject.There are 9 kinds of abstract inspection methods:the graphical representation of theorems and concepts,the expression form of transformation conditions,the expression form of transformation problems,the application of algebra,the recognition of graph structure,the accurate representation form of objects,object objectivism,the cultivation of spatial imagination,and the maze problem.The investigation methods of decomposition include the following 6 types:making parts into whole,interlocking,decomposing and reorganizing,layer by layer decomposing,making parts into whole and scheduling problems;There are 10 ways to investigate programmatically:sequential structure,branch structure,loop structure.Dijkstra algorithm,recursion,greedy algorithm,retrospective algorithm,parallel processing,stack,semantic syntax error;There are five ways to summarize the investigation:a group of basic graphics,graphic reasoning,pattern matching,editing distance,and information integration.There are eight evaluation methods:sorting problems,judging whether the alternatives meet the requirements,judging whether the alternatives can achieve the goals,propositional reasoning,proof,information security,situation judgment and measurement screening.Then,on the basis of determining the method of compiling test questions,the factors influencing the difficulty of test questions in each stage are proposed and verified by means of three stages of the process of problem solving:problem representation stage,problem solving stage and result output stage.There are eight influencing factors in the problem representation stage:information presentation mode,amount of reading,narrative wording,familiarity of background,novelty of situation,interference information,concealment of conditions,redundancy information and multiple targets;The problem solving stage has the following 8 influencing factors:the number of knowledge points,the breadth of knowledge points,the depth of knowledge points,the goal level,the importance of knowledge points,the problem-solving skills,the amount of calculation and the amount of reasoning;There are three influencing factors in the output stage:question type,guess degree and number of solutions.Finally,through the design of the questions in the stage of voluntary education,the paper verifies the factors influencing the difficulty.