Research On Project Based Learning Of Chemical Element Compounds In High School

The promulgation of the "Ordinary High School Chemistry Curriculum Standards(2017Edition)" and the reform of the new college entrance examination "3 + 3" system require that the students trained by teachers to have the correct values,essential characters and key abilities.Whereas traditional teaching is oriented towards exams,it ignores the development of students' core literacy.Project Based Learning,as an effective teaching method for deep learning,emphasizes the solution of complete real and complex problems,and focuses on training students' chemistry ability and thinking.It is a research hotpots in middle school chemistry teaching in recent years.In high school chemistry teaching,the element compound module is at the foundation and core position in the chemistry curriculum system,and is the growth point of basic concepts and basic theories.But because of the factual knowledge and declarative knowledge,the content is complicated,and the students cannot find the law,so it has always been difficult in teaching.This research focuses on the learning difficulties and teaching difficulties of chemical element compound modules in high schools at various learning stages.Based on the teaching model of project-based learning,the teaching model and teaching strategies of element compound module project-based learning are formed.The research process has mainly gone through four stages,namely the preliminary investigation,classroom practice,formation of results,and application of results.In the investigation phase,mainly through literature survey,communication with expert teachers and students,forming a survey summary of learning difficulties and teaching difficulties.Aiming at the teaching difficulties and learning obstacles,with the help of the expert team,the project based learning courses of "Sulfur and its compounds" were carried out in the first grade,the second grade and the third grade respectively.Based on the development of project-based learning in different grades,a teaching model and teaching strategy for project-based learning are formed,and in the course of practice,the research results are improved.The study found that the obstacle for students in the element compound module is the lack of understanding of element compounds.Therefore,an important teaching goal of the project-based learning of element compound modules is the construction and application of two-dimensional graph recognition model of valence category.When students build awareness after the model,their learning ability and problem-solving ability have been significantly improved,and the subject's ability has been greatly improved.In the practice of project-based learning,the design-implementation model of project-based learning,the onion model and the design process of project-based learning,are described,and the specific implementation of project-based learning is explained in detail.Two teaching strategies are formed for specific chemical substances and substance transformation.In the design process,we focus on the selection of project topics and teaching materials,driving problem design,classroom activity arrangements and project evaluation.Experimental activities play an important role in the teaching of modular projects.Project-based learning at different learning stages and different grades needs to be adjusted in step with the development of students 'disciplinary abilities and core qualities.Project-based learning is designed according to the disciplinary ability model to make teaching more in line with students' cognitive development laws.The development of students' academic abilities and core qualities brought about by project-based learning is obvious.Project-based learning solves the teaching difficulties of element compound teaching.Students or teachers find the project,students disassemble and solve the problem.In the process of solving the problem,the teacher gives a certain learning support in time,and finally forms a thinking method to produce the project product.In this process,project evaluation plays an important role.Generative classrooms test teachers' abilities and knowledge.Project-based learning has achieved the development of students' academic abilities and core qualities.