| At present,the chemistry teaching in the third year of senior high school will spend one academic year to sort out and review knowledge,which is usually carried out in the mode of the first round of review and sort out basic knowledge,the second round of review to break through key and difficult points,and the third round of review to improve the set of papers.The contents are mainly explained by teachers and students do a large of exercises,but the way is dull,and review effect is not satisfactory.Taking improving scores as the first goal is not conducive to the cultivation of students core accomplishment in chemistry,which is often reflected in the fact that students have nowhere to start when doing experiment questions in chemical engineering,and it is difficult to get high scores in chemistry.Experiment is the foundation of chemistry,and the core idea of chemistry textbook is to train students through the exploration activity of chemistry experiment.It is of great help for students to introduce experiments into the third grade review courses to stimulate students enthusiasm for review,improve classroom efficiency,and develop core qualities for examination papers.In order to add reasonable experiments in the classroom,there are certain requirements on the feasibility,safety,exploration and the connection with teaching materials.Instead of improving the experiment in the compulsory course or quoting the experiment in the exam questions,the teacher should design the experiment in the elective 6 "experimental chemistry" in the pep edition and bring it into the classroom.Therefore,this study tries to use the experiment in chemistry experiment 6 as the carrier of some review courses in grade 3,with progressive questions as the guide and multi-angle evaluation mechanism as the incentive to carry out chemistry review in grade 3.This paper seeks theoretical support from the works related to experiment and review lessons,follows the requirements of the examination syllabus,and designs an experiment class suitable for review lessons by means of literature retrieval,questionnaire and interview,as well as learning and consulting from front-line teachers.According to the new curriculum standards,the evaluation strategy of "using activity performance to evaluate students’ exploration ability,emotional attitude and values" and "pen and paper test should focus on students’ ability to solve practical problems" is proposed.Starting from the three aspects of experiment design,experiment reflection and exercise,the teaching mode of experiment review lesson is explained by the teaching design of "the formation of chlorine gas and the miniature experiment of its properties" and "the preparation of aluminum hydroxide",In the form of subject inquiry,this paper makes an in-depth analysis of the experimental contents of the review laboratory lesson.After class,the teaching was followed up,with three months as the observation period and four classes as samples,and the feasibility of the experimental review lesson is compared from the two aspects of monthly examination results and student evaluation.Through the research,it is found that this teaching mode can stimulate students’ learning motivation and enable them to participate in class better.The application of multi-intelligences can help students to build a better knowledge system and improve their comprehensive accomplishment.As the two experimental classes,the average score and the excellent score rate of the two classes are greatly improved,which indicates that this study is effective. |
