The Practice Of Cultivating Students' Physical Model Construction In High School Biology Teaching

The “ordinary high school biology curriculum standard(Experiment)” in our country in 2003,in the knowledge goal,it is clearly pointed out that "basic knowledge of basic facts,concepts,principles,laws and models of biology should be acquired",and let students understand the scientific method of building model and its application in scientific research.In the senior high school biological teaching version of the required text book also designed the corresponding model construction activities,especially the physical model building,in order to improve students' biological science literacy.At the same time,examinations of models often appear in high school examination papers.This shows that the importance of model construction for high school students' biological learning and modeling thinking ability training.As the most widely used biological model in high school,physical model has important research and practical significance in high school biology teaching.Therefore,how to carry out teaching practice to cultivate the level of high school students 'physical model construction and effectively improve students' modeling thinking and modeling ability has become the research direction of this article.Aiming at the problems identified in this study,refer to relevant domestic and foreign literature on the construction of high school biological models and physical models on the China Knowledge Network(CNKI).After careful reading and analysis,the concepts and classification of the models,the concepts and characteristics of the physical models,respectively the classification,classification and construction steps were sorted out.With reference to the new American Standards and the situation of students,the construction level of high school students' physical models was divided.Discuss with the teacher of the biology teaching and research group of our school and work out the idea of cultivating high school students' physical model construction level.According to the characteristics of high school students' different physical model construction level,the students' training is divided into three stages: physical production,guided innovation and model application.Teachers provide modeling materials for students to make physical physics models,and then through teacher-led training,students experience the complete physical model construction process.Try to innovate in many aspects such as materials and forms to improve the initiative and innovation of student model construction,and then guide students to strengthen the application of models.The whole process is guided and monitored by the teacher,and the corresponding text analysis of the cultivation results.This study uses textbook analysis,teaching and practice,and research methods.Using the textbook analysis method,carefully read and analyze the three compulsory textbooks for high school biology in the human education edition,and sort out the location and content of the physical models appearing in the textbooks,the physical model construction activities designed in the textbooks,and the supplementary development of the school's biology group teachers Location and content,and divide the modeling content according to the modeling level that students should achieve at different stages.Using the textbook analysis method,carefully read and analyze the three compulsory textbooks of the senior high school biology for human education.Sort out the location and content of physical models appearing in textbooks.Sort out the location and content of the physical model construction activities designed in the textbook and supplemented by the teachers of the biology group of our school,and divide the modeling content according to the modeling level that students should achieve at different stages.The teaching practice method is used to carry out the model construction teaching centered on the physical model content in the 14 th class of Grade 2020 in Chongqing Banan Middle School.According to the selected content,the teaching practice is divided into three stages,and the students 'feedback and modeling results are analyzed to analyze the students' classroom achievement.The questionnaire method was used to investigate the knowledge of physical models among untrained high school students and 14 classes after practical training.The analysis found that the physical model construction practice training can improve students' understanding of the physical model's manifestation,characteristics,construction process and function.And the post-test results show that students agree that they have a certain level of physical model construction after training.Through the analysis of the results of this study,the following conclusions are obtained: first,the content and distribution of the physical model and physical model building activities in the high school biology compulsory textbook for human education edition combed by this study demonstrate the importance of physical models for high school biology learning,and the division of modeling content according to the difficulty level and the students' attainable level can provide guidance for biology teachers to carry out model teaching activities in teaching;Second,the phased physical model building teaching activities designed and carried out in this research can improve the students' physical model building level to a certain extent,and can provide a reference for biology teachers to design such teaching activities,which is meaningful for model-building activities;Third,after the teacher's training in stages,students can build simple physical models and complete modeling activities with a complete modeling process according to the teacher's requirements,and gradually form model thinking and have some innovation.Under the guidance of teachers,they can realize the use of physical models when learning abstract things,and change the model to simulate the changes of the prototype to obtain new knowledge and achieve further application of the model,which reflects the strong plasticity of students,and also shows that the training of teachers is feasible and effective meaningful.