Research On The Cultivation Practice Of Pupils' Computational Thinking Based On Scratch Programming

In the 2017 High School Information Technology Curriculum Standards,the four core literacy of the information technology discipline was changed to information awareness,computational thinking,digital learning and innovation,and information society responsibility.The standard clearly states that in the process of forming a problem solution,computational thinking is the way in which individuals use the field of computational science.Therefore,in order to adapt to the study of information technology courses in the high school stage,it is especially important to cultivate the computational thinking of primary school students.This study will focus on the perspective of primary school students in the cultivation of thinking ability,and try to explore the teaching mode of primary school students' computational thinking by understanding the changes in the level of computational thinking of primary school students in Scratch teaching.Firstly,through consulting relevant literatures,it summarizes the application status of Scratch in information technology teaching in primary and secondary schools,and analyzes the concept of computational thinking.Second,the PBL-Scratch teaching model was developed.The PBL-Scratch(PBL:Project Based Learning)teaching model refers to the Scratch teaching model based on project teaching.After that,during the internship period,students of the fourth grade of Yanji G Elementary School implemented the practice of SWT based on the PBL-Scratch teaching model.Finally,it analyzes the changes of students' computational thinking level before and after the educational practice from the various dimensions of computational thinking,and provides reference for the development of computational thinking education.The Scratch teaching activities were conducted in the fourth grade of Yanji G Elementary School in the PBL-Scratch mode.During the 8-week teaching process,the PBL-Scratch was explored using the questionnaire on the status quo of primary school students' computational thinking ability,the questionnaire on pupils'computational thinking ability,and the PBL-Scratch-based computational thinking questionnaire.The relationship between the various teaching links of the teaching model and computational thinking.Investigate the results,using the PBL-Scratch teaching mode can improve the computational thinking ability of small high students;PBL-Scratch teaching process in the process of finding problems and analyzing problems can effectively improve the abstraction and design ability of primary school students' computational thinking;problem solving stage can effectively improve primary school students Computational thinking and automation ability;migration to the title stage can effectively improve the reasoning ability of primary school students' computational thinking;PBL-Scratch teaching results display,evaluation and summary stage can effectively improve the evaluation ability of primary school students' computational thinking.It is also proposed that the difficulty of selecting the project in the PBL-Scratch teaching process should be combined with the cognitive level of the teaching object;the PBL-Scratch teaching process needs to be based on the core elements of computational thinking;the PBL-Scratch teaching process should strengthen the migration problem to make the students calculate the thinking of reasoning.Suggestions such as the gradual improvement of capabilities.