| In order to improve scientific literacy,China is in the full implementation of the education reform,of which textbook reform has become an important part,from "an outline only a book" to "several books in a standard",in order to better fit the students’ learning.As a teacher,it is necessary to understand the characteristics of different versions of textbooks,and effective use of different versions of textbooks in teaching,to further improve the teaching effect.this research first makes the surface analysis and the deep analysis to the theme of "change of state" in the textbooks of PEP People’s education press,Shanghai Education Press,Jiangsu science and Technology Press,Beijing Normal University press,Specifically as style,column,illustration,knowledge structure,experiment and practice.By comparison,the design of each version of the textbook has its own characteristics.it can be said that they are equal,each one has its own merits.In the process of teaching,teachers should make full use of each version of the textbook,select the teaching resources,optimize the teaching design,in order to improve teaching effectiveness.Next,basing on comparison of textbooks,according to information processing theory of Gagne and Knowledge learning and teaching stage theory of Pi Liansheng,We put forward the stage teaching strategy.Finally,taking the opportunities of educational practice,we have carried on the teaching practice to the teaching strategy,and the feasibility and effectiveness are verified,Using the form the experimental class and the contrasting class and using pretest and posttestBased on the above research,we got the following three conclusions:(1)The presentation of the four sets of textbooks is different,which is mainly reflected in the columns and illustrations.In the teaching process,teachers can make full use of this feature to carry out teaching,so as to increase the interest of the classroom,and improve the classroom teaching effect.(2)The knowledge structure of the four sets of textbooks are similar,the difference between experiment and exercise is relatively large.Teachers can properly choose the experiment to increase the visual effect of the classroom and the students’ perceptual knowledge,so as to promote the students to master the new knowledge.According to the students of different learning level,we can choose different textbook exercises to teach students in accordance with their aptitude,so as to promote the development of each student.(3)The teaching strategy which based on the comparison of textbooks,has been initially verified by practice teaching.It can be seen that this teaching method is feasible and effective. |