Research On The Design Of Evaluation Tool For Computational Thinking Of Senior Grade In Primary School

With the rapid development of the information age and the continuous expansion of its influence,computational thinking has been identified as an indispensable key skill to solve problems in the 21 st century,and a basic quality as important as reading,writing and arithmetic.Therefore,the academic community has paid more and more attention to the research of computational thinking.Most of the research focuses on the cultivation of computational thinking,and there are relatively few researches on the evaluation of computational thinking,but the attention is getting higher and higher.The essence of evaluation is to measure the effect of computational thinking cultivation,so as to better promote the development of computational thinking.At present,there are a variety of evaluation tools for computational thinking,but most of them focus on the evaluation of the concept and practical ability of computational thinking,and pay little attention to the perspective of computational thinking,so it is difficult to make a comprehensive evaluation.Therefore,based on the three-dimensional framework of computational thinking,this paper designs three different evaluation tools from three dimensions and conducts practical application to verify their feasibility.First,the evaluation of conceptual dimensions is calculated.According to the cognitive level of the senior grade students and the comprehensive comparison of the evaluation tools of computational thinking,select Bebras test and computational thinking test(CTt)as a source of computing concept dimension test subject,according to the calculation concept index,a reasonable calculation thinking concept test volume was developed.through sampling test quality analysis of examination paper to verify its scientific nature.Then the students' level of calculation concept is evaluated,and the visual presentation is carried out by means of radar analysis diagram and reasonable suggestions are given.Second,the evaluation of computational practice dimension.Design programming works,based on ECD evaluation theory.use the PECT framework to analyze programming works,and verify the rationality of the evaluation method after many times of practice,and then evaluate the computing practice ability of learners on this basis,and put forward reasonable suggestions.Thirdly,the evaluation of perspective dimension is calculated.The cited scale of computational thinking perspective was slightly adjusted,and its reliability and validity was verified through sampling test.Then,the level of students' computational perspective was evaluated and visualized by using radar analysis diagram.Finally,reasonable suggestions were given.Through the evaluation analysis of the three dimensions,it is found that the evaluation results under the three dimensions can be mutually verified.The main research achievement of this study is to start from the three-dimensional framework,trying to evaluate the computational thinking level of primary school students more comprehensively and put forward targeted suggestions,in order to provide reference for the cultivation of computational thinking activities and evaluation work.