Design And Application Of Physics Micro Course In Middle School Based On Problem Solving

Micro class is a new educational method,which has the characteristics of short time,precise content and strong pertinence.Compared with the traditional teaching mode,it is easier to attract students’ attention and stimulate students’ interest in learning.Therefore,in middle school physics teaching,how to effectively design and apply micro courses to improve classroom efficiency is a problem worthy of study.Based on constructivism theory,multiple intelligences theory,experience tower theory,humanism theory and middle school physics curriculum standard,this thesis discusses the micro curriculum design principles based on problem-solving,that is,studentcentered principle,discipline standard principle,real life background principle,efficiency principle and personalization principle;This thesis discusses three teaching strategies to improve students’ problem-solving ability by using micro class.They are using micro class to preview the teaching content before class,using micro class to break through the teaching difficulties in class,and using micro class to review the old and know the new after class.Through the combination of pre class,in class and after class,we can give full play to the role of micro class in middle school physics teaching;The teaching mode and production process of physics micro course in middle school based on problem solving are discussed;The questionnaire of "investigation on the current situation of middle school students using micro class to learn physics course" was designed and investigated in a middle school in Y City.This thesis preliminarily understands the application status of micro class in middle school physics teaching,recognizes the shortcomings and disadvantages of current physics teaching,the wide application prospect of micro class for classroom teaching,and students’ cognition of micro class,which further confirms the feasibility and necessity of developing micro class based on problem-solving in middle school physics teaching.The innovative work of this thesis is to pay attention to the difficult problems and error prone points in students’ learning,take the middle school physics textbook of people’s education edition as the carrier,and give ten specific micro class teaching designs on the basis of fully developing and effectively arranging the textbook.Then,according to a certain production process,some designs have been post produced and applied in teaching,and good results have been achieved.They are:Teaching design of "plane mirror imaging" micro course.First,attract students’ attention through the film clip of "Garfield looking in the mirror",then lead students to review the relevant experiments on the imaging characteristics of plane mirror,and help students solve "why is plane mirror a virtual image?" "Will the size of the image change with the distance from the object to the plane mirror?" "Why use glass plates?" "What’s the difference between colorless glass plate and Tan glass plate?" "Why should the glass plate be placed vertically?" "Why does the glass plate become two images?" "If you want to increase the brightness of the image,what are the methods?" "If you block the back of the glass plate,can you still see the image of the glass plate?" To cultivate students’ ability to find and solve problems.Teaching design of "Lenz’s law" micro course.In order to help students "see" the direction of induced current and obtain perceptual knowledge,we use self-made teaching aids to carry out demonstration experiments,and solve "what are the factors affecting the direction of induced current" through animation simulation.This problem is the basic content of Lenz’s law.What is the profound meaning of "obstruction",During the discussion,help students deeply understand Lenz’s law and improve their thinking and application of methods on the basis of experiencing the process of scientific inquiry.