Research On Digital Acoustics Experiment In Junior High School Physics Textbook Based On Core Literacy

In recent years,with the development of digital experiment technology,application of smart phones,computers and sensors can be carried out in middle school physics inquiry experiment and demonstration experiment teaching.This study takes the acoustics of junior high school as an example.Based on digital experimental technology and aiming at the discipline core literacy,this study optimizes the acoustics experimental teaching activities of junior high school,and carries out the teaching practice and evaluation research on the "characteristics of sound" as a case.The specific research contents are as follows:First,through literature research,the research status of physical acoustics digital experiments in middle schools at home and abroad is analyzed.According to the research results of experts at home and abroad,the methods of improving acoustics experiments by using smart phone APP and computer sensors are summarized.Secondly,this paper makes a comparative study on the experiments of the acoustics unit in the six editions of domestic junior high school textbooks,and carries out a specific analysis from the two aspects of the arrangement of the experimental structure and the selection of the experimental content,so as to analyze its shortcomings,so as to provide a basis for optimizing the design of teaching activities.Third,the use of smart phones,computer sensors,such as digital experiment technique,core in order to promote students’ physical quality as a fundamental goal,to "measuring sound velocity in the air," "to explore the voice features(pitch,loudness,and sound)the influence of the factors," "display ultrasound and analog sonar technology," "comparison of the sound insulation performance of different materials" four optimization design the teaching process,put forward concrete Suggestions of teaching.Fourth,with the characteristics of "voice" as the important content of case teaching practice research,designed questionnaire to measure students and teachers before and after the questionnaire,the core literacy in view of the development of students,teaching effect measurement,and will survey data using SPSS 22.0 software paired sample test,through contrast before and after the test and the experimental group and control group comparison and analysis,to assess the achievement of the teaching goal.The results show that:First,in recent years,the application of digital experimental technology in middle school acoustics experiments has been widely concerned;Secondly,on the whole,the arrangement of acoustic experiments and the selection of experimental content in various textbooks are limited in length and not difficult.Oscilloscopes are specifically used to display waveform images to analyze sound characteristics,but there is a lack of resources for systematic development of digital experimental courses.Thirdly,guided by the goal of core literacy,digital experimental technology is used to optimize the design of exploratory activities,including classroom exploratory activities and after-school comprehensive practice activities,which can increase the convenience of experiments and the intuition of experimental phenomena.Can improve the richness of exploratory activities;Experiments are not limited to classroom teaching,but also can carry out physics experiments independently after class.It not only deepens the understanding of the knowledge,but also simulates the modern application technology,and enables students to understand the connection between physics and life and social science and technology.Fourthly,through the measurement and evaluation of the use of digital experimental technology to improve the acoustic characteristics experimental teaching,it can be shown that it is conducive to the cultivation of students’ core literacy,promote the overall development of students.