Research On The Strategies Of Creating Problem Situations In High School Biology Unit Teachin

Unit teaching is the most widely used teaching form in the current high school education stage.At the same time,it exists as a teaching method.Since its birth,unit teaching has been developing continuously,moving towards the direction of concept centered,problem-based and emphasizing the whole.As a part of the early unit teaching method,the problem situation itself has also been continuously and deeply studied.After turning to philosophy,psychology,sociology and other disciplines,the situation has a richer meaning.The process of theoretical enrichment of unit teaching and problem situation is not two parallel lines.Under the guidance of holistic thinking,the development of the two makes it more possible to create problem situation in unit teaching.Therefore,based on the literature analysis,this paper puts forward the creation strategy,integrates knowledge and practice in the process of educational practice,adjusts it at any time,and investigates the effect after the practice,hoping to provide reference for front-line teachers.This paper sorts out the relevant theories of unit teaching and problem situation creation,summarizes the cross parts between them,and summarizes the new ideas of situation creation in unit teaching under the holistic idea.By investigating the current situation of situation creation in Biology Unit Teaching in senior high school,it is found that some teachers have insufficient understanding of theory,ignore the integrity of the unit in practice,and there is a situation of "emphasizing presupposition and neglecting generation".Combining the theory with the current situation,this paper puts forward the strategy design principle of "education first,integrity,authenticity,presupposition and generation",and forms the unit teaching steps embedded in the problem situation,that is,building the knowledge network based on the core concepts;Contact students’ reality and investigate their knowledge background;Around the unit task,complete the situation preset;Based on the textbook unit,complete the unit reorganization;Prepare learning materials and inform learning objectives;Deepen classroom introduction and guide problem exploration.The above strategies were used to carry out educational intervention experiments,and part of the experimental process was shown with the unit of "relationship between genes and chromosomes" as an example.The relevant data of the intervention experiment are imported into the statistical software for analysis,and the conclusion is drawn: the situation creation and unit teaching will have a significant positive impact on the teaching effect;In the process of unit teaching,using the above strategies to create problem situations can achieve more positive and stable teaching results.