Application Of Scaffolding Of Chemical History In Chemistry Teaching In Senior One From The Perspective Of Core Literacy

With the development of the times and the deepening of education reform,how to carry out classroom teaching effectively based on the perspective of core literacy is an important research topic for the majority of chemistry teachers.The scaffolding instruction based on constructivism theory and zone of proximal development theory is very consistent with the new curriculum teaching philosophy,focusing on students' self-construction,independent exploration,and collaborative learning.Through the investigation of the application status of the scaffolding instruction,it can be seen that:According to the teaching content and the current cognitive level of students,the scaffolding instruction builds a variety of teaching scaffoldings flexibly to implement the teaching goal of developing core literacy.Except focusing on the knowledge itself,learning under the concept of core literacy should also pay attention to the scientific ideas,methods and viewpoints contained in the process of knowledge generation,which are inseparable from the learning and understanding of historical materials.Therefore,it is certain practical significant to implement the cultivation of core literacy in chemistry teaching by building “the scaffolding of chemical history”.This research followed the research mentality of integrating theory with practice.Firstly,the research status of the scaffolding instruction and chemistry history teaching at home and abroad was analyzed.Through literature review,“constructivism theory”,“zone of proximal development theory”,“the scientific epistemology” and “the core literacy concept” were used as the theoretical basis of this research,and the core concepts of “chemical history”,“the scaffolding of chemical history” were defined.Deeply excavated and expanded the historical materials behind the basic knowledge in the PEP compulsory textbooks,collated and analyzed the corresponding dimensions of the core literacy of chemistry.Through interviews,this paper analyzed the current situation of chemistry teaching in senior one and the views of teachers on scaffolding teaching and chemical historical materials,the feasibility of applying the scaffolding of chemical history in senior one was explored,which laid the foundation for the later teaching practice.On this basis,four application principles and four application strategies of the scaffolding of chemical history in senior one from the perspective of core literacy were proposed,and the teaching practice process of applying historical materials support was designed.After entering the level of practical research,three teaching cases “colloid”,“the properties of chlorine”,“chemical reaction and electric energy” based on the scaffolding of chemical history were carefully designed and demonstrated.Then,the teaching practice effect was analyzed and evaluated from multiple aspects.The results showed that the scaffolding teaching of chemical history played a certain role in improving students' interest in chemistry learning,promoting the transformation of students' learning methods and the development of subject core literacy.