An Empirical Study On Digital Experiment Cultivating The "Evidence-based Reasoning And Model Cognition" Literacy Of High School Students

The proposal of the chemical core literacy points out the direction for the reform of chemistry curriculum in the stage of basic education,it has become an important curriculum goal that developing students’ core literacy of chemistry.of high school."evidence-based reasoning and model cognition" belongs to the third dimension of chemical core literacy,which focuses on cultivating students’ concept and methods of chemistry.Digital experiment is a teaching tactic,which uses sensor technology to integrate computer,data collector,sensor and supporting software.It has the characteristics of visualized,real-time and portable.It has obvious effect in cultivating students’ interest and reducing students’ cognitive difficulty.It provides more possibilities for "literacy-oriented" chemistry teaching.This study using the methods of literature review,questionnaire,experiment and case study,combing the literature of “chemical core literacy” and “digital experiment” by using knowledge graph,and it points out the research thread and current research trend,it will provide theoretical support for this research.this study selected two classroom students as the research objects in Grade 2 senior high school of the Middle School Affiliated to Hefei University of Technology.We selected typical teaching cases to design and implement under the conditions of curriculum standards and digital experiment applicability.We established The Questionnaire of Digital Experiment Cultivate "Evidence-based Reasoning and Model Cognition " in Senior High School and The Test Paper of Digital Experiment Cultivate "Evidence-based Reasoning and Model Cognition " in Senior High School.After the semester of chemistry course,the questionnaire and the test paper were hand out.According to the survey results,the two classes’ evaluation of their " evidence-based reasoning and model cognition " is about 3.2 ～ 4.1 points,through the test results,the accuracy of the two classes’ test questions is about 70.7% ～ 90.9%,that is level 2 or3 in the academic quality;Combined those results with the students’ final examination results,it is concluded that digital experiment has obvious effect on expanding students’ knowledge horizon,improving their scientific inquiry ability,and implementing the "evidence-based reasoning and model cognition".It is recognized that the new educational technology plays an important role in the improvement of students’ subject thinking,subject concept and the cultivation of core literacy.Under the background of new curriculum reform,chemistry teachers need to change their teaching concepts,update teaching methods,innovate classroom teaching mode,enrich evaluation methods,give full play to the value of modern educational technology,fully combine information technology with chemistry curriculum,and realize higher education value of chemistry.