Analyze Chemistry Textbooks From The Perspective Of “science And Engineering Practice”

Attaching importance to “scientific and engineering practices” is one of the core concepts of ?A Framework for K-12 Science Education: Practices,Crosscutting Concepts,and Core Ideas? and it's also the direction of the reform of science education in China.In order to have a more in-depth understanding and play the value of practices in textbooks,the author used a model constructed by two dimensions which are 8 elements of “scientific and engineering practices” and learners' subjectivity to analyze textbooks.The textbooks can be estimated that there're practice elements to some extent,but if we analyze the textbooks from a clear and developmental view,there may be some deficiencies.So,something new will be discovered if we analyze them from a new view and it will have a guiding significance to “Chemistry”(Shanghai science and technology publishing house)and positive significance to the development of chemistry teaching.The author draw the following conclusions through to the analysis of “Chemistry”(Shanghai science and technology publishing house):(1)There are plenty of “scientific and engineering practices” and the sufficient number of practices is one of the distinctive features of textbooks.(2)Scientific practices are accounted for an absolute majority while engineering practices are few in number and they are not enough in textbooks.“Chemistry” is a basic subject of science,so it's appropriate and all right that there are plenty of scientific practices.But based on the standard of the chemistry curriculum standard,the number of engineering practices right now maybe can't satisfy the standard.(3)Although practices involve 7 elements,the distribution is obviously uneven.“Engaging in argument from evidence”,“Obtaining,evaluating,and communicating information”,“Developing and using models” and “Using mathematics and computational thinking” are not enough.The practices are similar to the traditional chemistry teaching.(4)The textbooks pay attention to the students' subjectivity and different practice elements have different subjectivities.The subjectivities of “Analyzing and interpreting data”,“Constructing explanations(for science)and designing solutions(for engineering)” and “Obtaining,evaluating,and communicating information” are high level.The subjectivities of “Asking questions(for science)and defining problems(for engineering)” and “Planning and carrying out investigations” are low level.