The Research On The Application Of Micro Course In Junior High School Physics Teaching

In the thesis,we make use of constructivism theory,humanistic learning theory,cognitive load theory and compulsory education physics curriculum standards,we study the teaching objectives to be achieved and the basic principles to be observed in junior high school physics micro-course.We propose that the design of junior high school physics micro courses should focus on "helping students learn physics knowledge and skills","guiding students to experience the physical process and scientific methods" and "guiding students to develop good character and habits".It outlines the five principles of "respecting science","respecting students","focusing on important points","being short and concise" and "stimulating interest".We also state the basic process of designing a junior high school physics micro course and explore the seven main uses of micro courses in physics teaching,such as,micro courses can be used to introduce new lessons,understand knowledge,solve difficult points,extend applications,experience methods,develop relationships and teach each other.We have focused on the content of the junior secondary physics teaching and the psychological characteristics of junior secondary students,and designed 12 effective micro course examples around the center of developing students’ core literacy.In kinematics,we designed the micro-lesson case of "The Speed of Motion".Through the construction of teaching scenarios and practical activities,the micro-lessons were designed to enhance students’ patriotism and awareness of traffic rules while imparting knowledge of "speed".In mechanics,we have designed micro-lessons on ’Understanding Pressure’,’Buoyancy’,’Power’ and ’Demonstration of Elastic Potential Energy’.In these micro-lesson cases,a series of interesting practical experience activities and physics problems that students are interested in are used to stimulate students’ interest in learning,motivate them to take the initiative to learn and master the relevant physics knowledge and skills,and focus on cultivating students’ scientific thinking ability and practical application ability.In terms of acoustics,we have designed a micro-lesson case study on the production and propagation of sound.Through the video,we have constructed an experimental investigation process and an interesting environment for communication and discussion that are of interest to students,focusing on developing their scientific thinking skills and practical innovation.In thermal science,we have designed a micro-lesson case of ’Internal Energy’.In this case,students are guided to learn about internal energy through analysis and analogy,using examples from life that they are very familiar with and learn to study problems by analogy.In optics,we have designed a micro-lesson case of ’Refraction of Light’.Experimental micro-lessons are used to promote students’ development,leading them to participate in experiences and investigations through group experiments,and focus on cultivating students’ scientific inquiry,solidarity and communication and expression skills in guiding them to learn and master the laws of refraction.In electromagnetism,we have designed micro-lesson cases such as Ohm’s Law,Joule’s Law,Electric Power,and Understanding Magnetic Phenomena.In these micro-lesson cases,we use homemade teaching aids and natural life phenomena familiar to students to design a series of student-pleasing teaching processes to stimulate students’ interest in learning and enthusiasm for investigation,and to lead students to learn and master relevant physics knowledge while focusing on cultivating students’ awareness of firefighting,love for the motherland and the ideology of pursuing truth.In addition,we have developed a series of home-made teaching aids using common objects in students’ lives,such as the "elastic potential energy demonstrator",which have excellent features such as obvious phenomena,simple operation and durability.Finally,we have used the micro-lesson to carry out educational practice.The results show that the use of micro-lessons in junior high school physics teaching can not only improve students’ academic performance and stimulate their interest in learning physics,but also cultivate students’ scientific thinking ability and practical application skill,as well as cultivate students’ good moral character and psychological quality,which can implement the fundamental task of "establishing moral education" and promote students’ moral and intellectual development.This will enable students to implement the fundamental task of "educating people by virtue" and promote their all-round development in moral,intellectual,physical and aesthetic aspects.