Application Of "Problem Solving" Teaching Model In Junior High School Biology Teaching

The increasingly fierce competition in today's society poses new requirements for talents.Only improving ability can stand out in the future competition.In addition,"Key Competencies" has become a new focus in China's education and research."Key Competencies" refers to the necessary qualities and key capabilities that students should possess to meet the needs of lifelong development and social development."Key Competencies" Core literacy is divided into three levels.The bottom of the "double-base point",the middle of the "problem to solve the problem",the top "scientific thinking point of view".The traditional teaching model attaches too much importance to the teaching of knowledge and ignores the cultivation of students' abilities in all aspects."Problem solving" teaching model fits with the "problem-solving direction" in the middle layer of "Key Competencies"."Problem solving" teaching model refers to the teacher's intention to propose different types of problems or tasks of the system in the teaching process to guide students to actively discover,actively explore,actually experience,and solve problems so as to deeply understand and master and use basic knowledge.From the ability to the overall development of personality,to become an effective problem solver teaching model.The author constructed an operational procedure for the biological "problem solving" teaching model by analyzing and summarizing related documents.First,create the problem situation and raise the core problem.Through the problem situation,the students can realize this cognitive gap,so that students can form a thirst for knowledge and stimulate students' interest in learning,so that students can actively participate in the process of solving problems.Second,present the problem chain and decompose the core problem.According to the core problem,students' knowledge mastery level,Characteristics of thinking development and life experience,The problem is further decomposed into a series of sub-problems and finally presents "problem chain".Third,to guide the solution of the problem and to characterize the problem.Define the conditions of the problem,understand the goals to be achieved,and the means to achieve them.Finally,feedback evaluation summary.In addition,conduct applied research.Using the "problem solving" teaching model to conduct experimental teaching experiments to verify the feasibility and effectiveness of the model,and to compare and analyze the data before and after the experiment in terms of biological learning interest,problem solving ability,and mastery of biological knowledge.And finally draws the following conclusions:First,a "problem solving" teaching model suitable for biology classroom teaching in junior high school was constructed;secondly,the "problem solving" teaching model can improve students' interest in learning biology;third,the "problem solving" teaching model can improve students' Problem-solving ability and "problem solving" teaching model significantly increase student's problem awareness.The "problem solving" teaching model can help students improve their problem representation ability.Fourth,"problem solving" teaching can improve student's biology to some extent.Learn knowledge.Finally,based on the results of the study,the following suggestions were made:First,teachers and students work together to create a harmonious,equal,dialogue,and exchange of teaching atmosphere;Second,to highlight the students in the problem-solving teaching of the main position;Third,the classroom questions should be set up scientifically and rationally.First of all,the problem set up in accordance with the logical relationship.Progressive,systematic,second,the problem set to meet the student's recent development zone,third,the problem set to fit the student's life reality;Fourth,to teach student system problem-solving strategies;In addition,guide students to correct The problem characterization,Problem characterization is the true starting point for solving problems.It directly affects the direction of problem resolution.Correctly characterization of a problem is half the problem solved successfully.;Finally,combined with the traditional teaching model,not only to cultivate students' problem-solving abilities,but also to improve the mastery of students' basic knowledge.