Research On The Application Of PBL Teaching Mode In Scratch Class

With the advent of the information age,the rapid development of network information technology,computational thinking has become a necessary skill for talents in the 21st century.Computational thinking has a certain significance for the future development of human beings.More and more experts and scholars realize Experts and scholars understand the value of cultivating students' computational thinking and consider it as one of the educational objectives of information courses in primary and secondary schools.They think that the enhancement of computational thinking ability can improve people's ability to solve practical problems,and the influence of having computational thinking ability on people's daily activities is significant.The traditional teaching mode that teachers talk about students' listening,students'interest in learning is not high,which is not conducive to the cultivation of computing thinking ability.Based on a large number of references related to Computational Thinking and PBL teaching mode,this study constructs a PBL teaching mode oriented to the cultivation of computational thinking,which is applied to the teaching of scratch in primary school to cultivate students' computational thinking ability.Specifically including the following several aspects of the content:(1)In depth study of Computational Thinking and teaching theory.Through in-depth research on the concept and characteristics of computational thinking,combined with the concept and characteristics of PBL teaching mode,this paper analyzes and summarizes relevant theoretical research results and literature,mainly introduces the three-dimensional framework of computational thinking,divides computational thinking into three dimensions:computational concept,computational practice and computational concept,and then completes the sorting of relevant concepts and theoretical basis of this research.(2)Combined with the relevant contents of the 3d framework of computational thinking,a PBL teaching model is constructed to cultivate Computational Thinking and improve programming ability.Give full play to the students' subjectivity,so that students have more opportunities to have face-to-face communication and discussion between teachers and students,and promote the development of deep thinking and high-level thinking ability.(3)Design and practice teaching cases.According to the PBL teaching mode for the cultivation of computational thinking,a scratch teaching case is designed,which is applied to the teaching practice to carry out the teaching activities of cultivating students'Computational Thinking.(4)Practical data analysis and discussion.Collect data and use professional software to make statistics and analysis of the collected data,including the analysis of the calculation thinking questionnaire,the analysis of students' scores,the analysis of students' interviews and the analysis of students' works.The conclusion of the study is as follows:most students are interested in the PBL teaching mode of computer-oriented thinking training,and have made progress in the three dimensions of computing concept,related concepts and practical results,It is found that the PBL teaching mode which is oriented to the cultivation of computing thinking is effective in cultivating primary school students' computing thinking and improving their academic performance.