This paper named the diagrams which made abstract convert to concrete as ACC diagrams, and designed analysis tools for ACC diagrams according to the cognitive process and influencing factors of ACC diagrams, and tried to analyze the current chemistry textbooks by ACC diagrams analysis tools, and then provided a reference for optimization of ACC diagrams.

Based on cognitive-developmental theory, this study discussed chemical cognitive development ladder of senior high school students, constructed teaching strategies with six core ideas such as structure, particle, classification, valence, transformation and conservation. Study and practice showed that these teaching strategies were effective.

This study guided students to apply graphic thinking,learn the core knowledge of chemistry, improve the ability of obtaining information, analyzing and solving problems, and deeply understand the essence of chemistry, and enhance chemical literacy effectively.

Through analyzing heuristic teaching and inquiry teaching of "determination of oxygen in air", this paper summarized the characteristics, differences and relationship between the two teaching models. Science teaching in China should be based on the heuristic teaching, and select some suitable course contents to carry out inquiry teaching. If we integrate core elements of heuristic teaching and inquiry teaching to create new inquiry teaching model, it will conform to the current reality of science teaching in China.

By examining the deficiency of the original FIAS and improved classroom teaching behavior analysis system applied in chemistry teaching, this paper put forward a suitable behavior analysis system—3C-FIAS for modern chemistry classroom teaching basing on the original FIAS. Then this study analyzed three different chemistry classroom teaching videos by using 3C-FIAS, and compared the analytical data with the results of previous researchers, confirmed the applicability, utility and scientificity of 3C-FIAS, and put forward some suggestions for how to use this system.

This paper analyzed conditions for meaning construction of "valence of element" based on constructivism theory, studied teaching design and teaching practice, and achieved ideal teaching effect. The results showed that using "price" to express the ability of one atom bonded atoms of other elements and guiding students to form concept of "valence of elements" accurately could improve students' ability to write chemical formula.

Through analyzing calculation questions in the ninth grade graduation examination by sampling questionnaire and interview, this paper discovered four problems about chemistry calculation such as the psychological fear, the nonstandard expression, poor subject foundation and narrow problem solving thinking, and so on. Aiming at these problems, this paper took some teaching strategies of integrating test questions, arousing learning interests, and improving learning methods, etc.

At present, the junior high school chemistry review class exists two bad phenomena: "not doing experiment" and "developing in advance". This paper introduced the optimization of experiment design to promote the development of high order thinking of students through integration of experiment unit, expansion of basic experiments and diversification of experimental programs.

This paper compiled questionnaire for high school chemistry teachers' teaching decision-making ability, carried out the questionnaire with 156 high school chemistry teachers in Guizhou province and Sichuan province, and found that there were some problems in high school chemistry teachers' teaching decision-making ability. This study put forward corresponding suggestions for improving the teaching ability of high school chemistry teachers, such as renewing the teachers' teaching ideas constantly, expanding teachers' knowledge, improving the reflective ability of teachers' teaching decision and improving the cooperative consciousness of teachers' teaching decision-making.

This paper introduced the new edition of Science Syllabus for Lower Secondary of Singapore which started using from 2013, the new syllabus designed science curriculum from the perspective of the nature of science, paid high attention to scientific inquiry, integrated the scientific ideas with the core concepts of interdisciplinary field, emphasized the cultivation of students' scientific ability and attitude, which provided a new perspective to revise the chemistry curriculum standard for junior high school of China.

Taking in-service senior high school chemistry teachers as the research objects, this paper studied their classroom teaching diagnostic ability through questionnaires and interviews. The study found that teachers' classroom teaching diagnostic ability were wholly at upper middle level, although teachers had no systematic understanding of classroom teaching diagnosis, they had classroom teaching diagnosis behavior in the dimensions of teaching content diagnosis, knowledge and skills diagnosis, teacher-student interaction diagnosis. Teachers only understood the surface of classroom teaching diagnosis and had a narrow target. Teachers' classroom teaching diagnosis ability had significant differences in different types of schools, school age and title, which influenced by internal factors such as diagnostic awareness, teaching experience, occupational languor and external factors such as faculty, diagnostic atmosphere and students. This article put forward suggestions on improving the diagnosis ability of chemistry teachers in senior high school from the aspects of teachers, schools, education departments.

This paper used the push screen software of Mirror Op or "Push Tool" and other equipment to realize the real-time push of mobile phone or computer screen to projection screen. The technology could solve some practical problems in chemistry teaching, which improved the teachers' class freedom, and was also conducive to solve the "lack of interaction" problem in the multimedia teaching.

This paper explored change of pH in the reaction of aluminum sulfate solution and sodium hydroxide through digital experimental method, the change curve between pH and the volume of sodium hydroxide solution was obtained, so the relationship between the amount of sodium hydroxide and formation and dissolution of aluminum hydroxide precipitation was got. This research could change people's misunderstanding on amphoteric aluminum hydroxide, played an active role in the high school chemistry teaching.

This paper introduced students' experiment inquiry based on electrolysis experiment of water and reaction between oxalic acid and potassium permanganate in high school chemistry textbooks and reaction between copper subcarbonate and formic acid. This study aimed to develop the creativity of students by setting scientific questions, emphasizing the process of experiment inquiry and making students experience the whole process of scientific research.

This paper analyzed the cause of current in copper-zinc original battery, using digital handheld technology to quantitativly determine the reaction current and solution's temperature curve of single fluid and two liquid copper-zinc primary batteries, and then compared efficiency of the two kinds of batteries. This study analyzed deeply from 4 aspects: macroscopic, microscopic, symbol and curve representation, the conclusion was that two liquid copper-zinc primary battery had better current stability, higher energy conversion efficiency, so it was more efficient. Handheld technology experiment combined with "tetra-representation" mode of teaching, provided case reference and teaching suggestions for inquiry teaching of primary battery.

This paper improved 30 senior high school chemistry experiments from four aspects: simulation of chemical reaction principle, deepening and perfecting of chemical experiment, innovation of chemical experiment and usage of non-professional laboratory apparatus. Thus chemical experiment was full of life and vitality, and maintained its unique position in chemistry teaching.

This paper pointed out and corrected several problems: the concept and essence of ionic reaction, the representation meaning of ionic equation and its writing procedures.