Study On The Teaching Practice Of The Learning Progressions About Particle Outlook In Junior Middle School

In 2007,the National Research Council(NRC)for the first time learned that the learning progressions was defined as "a description of the way of thinking that progressively deepen the students in a certain time span,learning and exploring a subject." Therefore,the educational researchers began to focus on the scientific concept of the formation of scientific literacy and cognitive thinking development significance and role.In this paper,the literature research method,the action research method,the test method and the interview method are used to study the learning progressions on particle in the junior middle school.This paper explores the influence of advanced teaching practice based on the concept of microfilm learning on the advanced development of students' microfilm learning,and effectively promotes the advanced teaching practice.And finally came to three conclusions:(1)The learning progressions of particle view in junior high school can be subdivided into five classes,namely: the material is composed of micro-particles,the quality and volume of particles is very small,particles are constantly moving,there is a certain interval between the particles,the interaction between particles.(2)Teaching practice has a positive effect on the development of students' classes of microcosmic view,and the significant effect of teaching has increased with the class.At the same time,it has a moderate effect on the trend of steep drop.(3)Teaching practice for different classes of students in the micro-concept of learning progressions have a role in promoting.The effect of teaching on the development of good students' fourth and fifth class is more significant.The role of teaching in the development of middle students' third,fourth and fifth class is more significant.Teaching to treat the development of all walks of developing students have a certain role in promoting.