Research On The Optimization Of Biology Experiment Teaching In Senior High School

Biology is a subject of natural science based on experiment,the establishment of biological concepts and the formation of the biological laws can not be separated from the experiment.Experiment teaching plays an important role in the training of students’ experimental operation, the ability of exploration and innovation. The effect of experiment practice has influence on the teaching effect. Therefore, in order to improve the experimental teaching effect,This paper focuses on improving the experiment to optimize the experimental teaching. The main results are as follows:Firstly, through literature research and based on the understanding of the research status of domestic and foreign experimental teaching, we discovered that the experiment teaching has attracted more and more attention at home and abroad, and foreign experimental teaching focused on combining the theories with practices, while in China it still retains at the theoretical level and there are many problems in the actual experiment teaching, such as the lack of experimental equipment and insufficient class time, and the phenomenon thatteachers prefer saying the experiments rather than doing the experiments is very common.Secondly, this study took the High School Biology Compulsory 1 of People’s Education Press as the research object and then classified the experiments of the High School Biology Compulsory 1.Through the questionnaire survey in some high schools in Hunan Province to get the implementing situation and effects of the experiment teaching required by biology compulsory 1. According to the survey, it is found that the teachers have a certain understanding of the biological experiments;From the opening of experiments, the high school mainly opened observation or identification experiments and verification experiments,Inquiry-experiments and model experiments opened a little;From effects of the experiment,it was found that sometimes the experiments were carried out according to all of the requirements and steps described in the textbooks, so that good results can not be achieved; From the case of teachers’ improvement of experiment,the teachers made little improvements in the actual experiment teaching. These results showed that there are plenty of room for experiments to be improved.Combined with a three-month experiment practicein experiment classes,we can find out the reasons for the poor effect of the experiments of Biology Compulsory 1 in high school.Thirdly, according to the improvement principles and requirements, the experiment was improved from the following aspects by adopting experimental research method. From the perspective of experiment material, the experiment-Observing Several Kinds of Cells by Using High Power Microscope was improved. From the perspective of experimental reagents, the experiment-Using High Power Microscope to Observe the Mitochondria was improved. From the perspective of experimental scheme, the experiment- Relationship between Cell Size and Material Transport was improved. And, from the perspective of experiment method, the experiment-Extraction and Separation of Pigments from Green Leaves was improved.Finally, from the perspective of experiment device, the experiment-Comparing the Decomposition of Hydrogen Peroxide under Different Conditions was improved.According to references and relevant literature, summarized the concrete scheme to improve the experiments of Biology Compulsory 1 in high school.Fourthly, Through case analysis, the reasons and effects of improving experiments were analyzed. The advantages of the improved experiments were put forward based on the information feedbacked by communicating with the teachers on the first-line.The results showed that improved experiments are beneficial to the improvement of students’ learning interest, students’ experimental ability and innovative spirit.Fifthly, according to the theory of constructivism,Bruner’s discovery and the humanism learning, aimed at the problems in experiment teaching, this study put forward some suggestions on improving the teaching of biology experiments in middle school from the perspective of schools, teachers and experimental examination methods.In this paper, we put forward the research ideas of finding problems, asking questions,putting forward the improvement principle, forming the improvement idea, putting forward the improvement scheme and the practicing improvement project and drawing the conclusion. the optimization of experimental teaching has been put forward from the combination of theory and practice, and it is expected to provide reference for improving the experimental teaching in middle school.