Design And Practice Of Chemistry TED-Ed Micro-course In Middle School

With the development of information technology and the update of intelligent terminal,people’s life is more and more influenced by the "micro age",and the way of learning is constantly changing.Since the introduction of the micro class from foreign countries,our primary and secondary school teachers are also actively participating in the various micro class competitions,and the production level has been improved.However,many problems have been exposed from the entries,mainly the form of the micro class is not innovative enough,so the author has carried out the following research:This research is mainly divided into two parts: theoretical research and practical research.The theoretical research is as follows:(1)the current situation of the design and application of TED-Ed chemistry course in middle school is analyzed.(2)by analyzing the chemical entries of China’s Micro lesson competition,we find that the micro class produced by teachers is generally single form,out of date and non-standard language,so micro class innovation is put forward.(3)combining the method of making micro class on the TED-Ed official network,the design model of TED-Ed micro lesson video is interpreted.(4)under the guidance of the scientific research method,the script of two cases of middle school chemistry microcourses is made.The practical research is as follows:(1)through interviews with ten teachers in practice schools,the current status of innovation research on micro class teaching by middle school chemistry teachers was investigated.(2)before and after the experiment,the change of students’ interest in chemical learning was explored by using the questionnaire method.(3)the Markov chain model was established to evaluate the changes in the results of the experimental class and the control class before and after the experiment.Through the analysis and summary,it is found in the practical exploration that the interest of the students in the study chemistry of the experimental class has been greatly improved and the academic achievement has been greatly improved.This shows that the combination of middle school chemistry teaching and TED-Ed micro course has a certain teaching effect.Finally,the paper puts forward several optimization strategies,and summarizes and prospects,hoping that in the future,the integration of high school chemistry teaching and TED-Ed micro class will be more perfect and mature.