The Research On The Application Of Smart Phone Sensors In High School Physics

With the advent of the information age,the education informatization has become an inevitable trend in the development of the education.In order to cultivate the high-tech talents who can adapt to the information age,China’s education is also undergoing continuous reform.Several important instructions and policies,such as the "National Medium-and Long-term Education Reform and Development Plan(2010-2020)" and the "Implementation Plan for Accelerating the Modernization of Education(2018-2022)",has been promulgated,which emphasize the need of vigorous promotion of the education informatization.The intelligent mobile terminal is an important way to develop and realize the education informatization.As an important representative of the intelligent mobile terminal,the smart phone is an important device to implement the education informatization at this stage.With the increasingly powerful of the 5G network technology,a variety of the mobile phone applications and micro-sensors make the functions and intelligence of smart phones continuously enhanced.The popularity of the smart phones in the field of education and teaching is also constantly improved.Based on the above background,this thesis a case study of applying the smart phone sensors to the high school physics experiments has been performed.Firstly,the functions of smart phone sensors,the applications of smart phone sensors in physical experiments,and the theoretical basis of this study are reviewed by using the literature research method.Through the case analysis method,the smartphone application software Phyphox was used in this work,and the experiment case of high school physics was selected.Based on the theoretical basis and the key points of the experimental design,we designed a measurement experiment of "Measuring the acceleration of gravity" by using the sound sensor of a smartphone and global positioning system(GPS)combine with Phyphox software,and the experimental value agrees well with the theoretical value.Using the sound sensor of a smartphone combine with Phyphox software,we designed the exploratory experiment of "Investigating the energy change of a bouncing ball in falling motion",which discovering the physics problems from the daily life and explaining the physics knowledge from the life phenomena.Using the acceleration sensor and gyroscope of a smartphone combine with Phyphox software,we designed a validation experiment of "Verifying the relationship between centripetal acceleration and angular velocity",the law of the circular motion is verified by the experiments perfectly.Then,according to the key points and the creative ideas of the teaching design,the class teaching cases are proposed corresponding to the experimental cases for "The free fall motion","The law of the conservation of mechanical energy",and " The centripetal acceleration".In teaching practice,the case of " The free fall motion" designed in this research is applied to the physics classes in a high school.The questionnaire survey method was used to make survey on the students,and the interview method was also adopted to interview some students and the front-line physics teachers after the class.According to the survey,most students are very interested in using smart phone sensors to do high school physics experiments.During the experiment,most of the students have obtained relatively good experimental effects and experimental results.Some students are also willing to repeat the experiment or explore more interesting physics experiments after the class.The frontline physics teachers also agree that the appropriate application of the smart phone sensors in classroom teaching will improve high school physics experiments.They also provide some comments and suggestions.Finally,the conclusion of this research was obtained.The application of the smartphone sensors to design and improve high school physics experiments will improve the accuracy of some original experiments.It can explain the physical phenomena and life phenomena and verify the physical theories with physical experiments.It achieve the effect of combining the abstraction and intuition,and can be a good complement to expand experiments.It will be helpful to stimulate students’ interest in physics learning,to improve students’ operational ability,logical thinking ability,scientific thinking and inquiry ability,and cultivate students’ good core quality of physics.