随着我国高等教育走向大众化，高校学生个体差异性越来越大，给大学的基础物

With the popularization of higher education to individual differences in college students is growing, brought great difficulties to the basic physics teaching university courses. According to the specific circumstances of students and teaching organizations, stratified teaching is an important means of teaching quality assurance. Rasch model is a probabilistic model to estimate the same time more difficult projects and individual capacity, paper 2019 Tsinghua University undergraduate students three times a mechanics test, for example, by means of Rasch analysis software WINSTEPS, SPSS experimental results stratified teaching of measurement and analysis, the results early test results: the ability level of the students - difficulty levels; found to be of high quality papers, questions the project covers all ability levels are tested physically hierarchical teaching university with general questions, difficulty prepared together reasonable, the vast majority of the subject reached the expected test results. Proved hierarchical teaching can improve the university physics teaching effectiveness and improve the overall level of the students, improve student learning.

With the popularization of higher education in our country, the individual differences of college students are increasing, which brings great difficulty to the basic physics course teaching in universities. According to the specific situation of students and the requirements of teaching organizations, layered teaching is an important means to ensure the quality of teaching. Rasch model is a probability model that simultaneously estimates the difficulty of the project and individual ability, in this paper, taking the three mechanics tests of undergraduates at Tsinghua University in 2019 as an example, using Rasch analysis software WINSTEPS and SPSS to measure and analyze the experimental results of stratification teaching, the results of which are preliminary tests: student ability level Project difficulty level; it was found that the test questions used in the physics layered teaching of the university were generally high-quality examination papers, the test items covered all the ability level of the examination, the difficulty preparation was reasonable, and the vast majority of the questions reached the expected test results. It is proved that stratification teaching can improve the teaching effect of physics in universities, improve the overall level of students and improve the enthusiasm of students to study.

With the popularization of higher education in our country, the individual differences of college students are more and more big, which brings great difficulty to the teaching of basic physics course. According to the specific situation of students and the requirements of teaching organization, layered teaching is an important means to ensure the quality of teaching. Rasch model is a probability model to estimate the difficulty of the project and individual ability at the same time. This paper takes three mechanics tests of 2019 undergraduates of Tsinghua University as an example, and measures and analyzes the experimental results of stratified teaching with the help of Rasch analysis software winsteps and SPSS. The research results are as follows: the ability level of students - the difficulty level of the project; the overall test questions used in stratified teaching of university physics are found It is a high-quality test paper. The test items cover all the subjects with all ability levels. The difficulty is reasonable. Most of the questions have achieved the expected test results. It is proved that stratified teaching can improve the teaching effect of college physics, improve the overall level of students, and improve their enthusiasm for learning.