A New Model, as a new student assessment system, is a continuously updated holographic electronic record in essence, containing students' 8 abilities continuously tracked and evaluated during high school. As a natural science based on experiment, the evaluation of students' chemistry experiment has a direct impact on the cultivation of their practical ability and innovative consciousness. However, at present, the evaluation methods of chemistry experiments are relatively simple in middle school stage of our country, and the final results tend to show in the form of test scores, which seriously hinders the development of students' personality. This paper would improve the evaluation system of chemistry experiment on the basis of A New Model to make the experimental evaluation of students more comprehensive, scientific and standardized.

Based on the 4 kinds of data of senior high school entrance examination scores in Guangzhou districts (county-level cities) from 2013 to 2016, this paper used cluster analysis to analyze the status of regional chemistry academic quality development of junior high school. This research showed that three categories were classified. Some districts moved in the results of cluster analysis in different years, and tended to merge into the first category including more and more districts. Guangzhou junior high school students' chemistry academic quality was achieving high quality and balanced development. Systematic research and training activities for chemistry teachers and scientific inquiry activities for students in junior high school were important reasons for this development.

Based on the characteristics of chemistry examination questions in college entrance examination, this paper clarified the main factors influencing item difficulty, whereby items of alternate forms were written for a sample test. Statistics showed that factors of different forms had a significant impact on item difficulty. Take “form of information presentation” for example, this paper studied how item difficulty change according to the same factor of different forms, which laid the foundation for the ensuing studies of item difficulty modeling.

This paper compared the functions of illustrations for “structure of matter and periodic law of chemical elements” in the senior high school textbook Chemistry published by People's Education Press in China and Chemistry:Concepts and Applications in the United States, analyzed the differences in arrangement characteristics, presentation methods and functional intentions of the illustrations, hoped to provide reference for the arrangement reform and form innovation of illustrations for the follow-up textbook preparation in China.

On the basis of revision of Bloom's taxonomy of educational objectives, this paper compared exercises of redox reaction and electrochemistry in Chinese and American high school chemistry textbooks from knowledge dimension and cognitive processes dimension. The result showed that, in knowledge dimension, both Chinese and American textbooks attached importance to conceptual knowledge and procedural knowledge, while Chinese textbooks pay emphasis on the former and American textbooks the latter. In cognitive processes dimension,American textbooks exercises' quantity of understanding and application levels were large above all application level,while exercises' quantity of understanding and analytical levels were large and uniform in Chinese textbooks. When we complied textbooks, we should pay attention to the curriculum functions of exercises,students' thinking training in subjects and ability cultivation of problem-solving, gave full play to the guiding function of exercises.

This paper counted types of pictures about redox reaction in Chemistry Concepts and Application, analyzed their functions, and put forward some suggestions for China's chemical textbook picture design.

Based on the 2015 Organization for Economic Cooperation and Development published the latest PISA results and Singapore students' scientific achievements, combined with Singapore junior high school science syllabus, this paper analyzed the scientific inquiry thought embodied in junior high school chemistry textbooks in Singapore. Taking the Discover Chemistry textbook as the material, this paper selected from the inquiry activities of the experiment, investigation, reflection and communication, dug the scientific literacy, and analyzed the inquiry ideas of textbooks. The purpose was to provide enlightenment for the compilation and revision of the contents of scientific inquiry in Chinese textbooks, and to provide reference for teachers and students to carry out effective inquiry activities.

This paper took the teaching of “exploring the composition of water” as an example, through the analysis of curriculum standards, teaching materials and learners, from the view of cognition, inquiry level, cognitive level to plan the goal of “chemistry around you” theme unit and confirm the class objectives of “inquiry into the composition of water”. By modeling, exploring and reasoning, students studied the strange substances (hydrogen), and preliminarily formed the ability to study the composition of substances quantitatively.

Chemical equilibrium is the key and difficult point of senior high school chemistry teaching. This paper took 39 masters' theses in China from 2005-2015 as the research object, analyzed the teaching research status of “chemical equilibrium”. The results showed that there were four main research hotspots:the misconceptions related to chemical equilibrium, the causes of learning difficulties, the teaching strategies and teaching suggestions. Research methods and research orientation showed diversified trends.

Based on the theory of BEM, this paper analyzed the shortcomings of common classroom teaching, and put forward suggestions on teaching design of “1-1-2 problem template strategy”. Taking “the nature and function of sulfur dioxide” for example, this paper showed process of practical inquiry of students' individual deep learning.

This paper takes the concept of “electrolyte” as key point and conducts an empirical study on 241 students in an ordinary high school of Hebei province. The results show that:(1) The different types of students have different problems in the concept learning, (2) there is a strong correlation between the relevant concepts, and the construction of the student concept system is not accurate and comprehensive. Based on this, the corresponding strategies are put forward, such as the emphasis on the concept of students' previous concepts and previous knowledge, the deep association between the different chemical concepts in order to improve conceptual transformation and pay attention to the development of concept to improve the depth of concept understanding.

Based on IrYdium Chemistry Lab virtual chemistry laboratory software, taking the hydrolysis of salts as an example, this paper discussed the visual instructional design methods and teaching application value. It showed that visual teaching design based on IrYdium Chemistry Lab could take into account the visualization process and results of expression thinking, and helped to strengthen students' subject comprehension ability.

High school chemistry teaching should pay attention to the cultivation and promotion of students' experimental ability, and the opening of school-based chemistry experiment elective course is an effective complement and expansion to the classroom experiment teaching. Based on the present situation of junior high school students' participation in hands-on experiments, this paper expounded the curriculum objectives, forms and contents of elective experiment courses, and analyzed the functions and values of selected experiments with specific cases. By observing students' classroom performance and participation, and combined with after-class interviews, this paper deeply reflected on the students' development from elective courses.

Under different mixing condition, through changing reactants' concentration and the ratio of amount of substance, this paper summarized the reaction rules between copper sulfate and sodium hydroxide:the rule of increase and decrease of ions in products, the correspondence rules of the corresponding ions, the change rules of product color. Using these rules, this paper forecasted and prepared yellowish green copper sulfate basic, analyzed and summarized the transformation relationship of products. The reaction rule of copper sulfate and sodium hydroxide was extended to the reaction rule of copper ions and hydroxide ion. These rules could be used as references for methods and theories in the related chemical production research.