| Textbook being the text in teaching, there’s great significance of its compiling. And the estimate content, being the new-added mathematics content after new curriculum reform, is more necessary to be studied. The research on estimate content focus on four aspects:the content distribution, the presentation, the backgrounds, and the expression. The research, which will improve the understanding of estimate content, and provide references to standard revision, will standardize the estimate content rendering in primary textbooks. Thus, it will promote the teaching of estimate content.The study used content analysis method, literature method, comparison method, investigation method, and used excel, SPSS16.0to deal with data. The study is based on comparison of old and new curriculum standard in our country, and comparison the curriculum standard both at home and abroad on estimate content. Text analysis is used to analysis the textbook, and clear the situation and problem of the estimate in textbooks by the teacher questionnaire and students’test. The study offer proposals of compiling estimate content rendering, which have been got expert argumentation.Research findings and conclusions are as follows:(1) The distribution on estimate content is not reasonable;(2) As the mathematical symbol of estimate,"-" is not reasonable;(3) Some background of estimate problem without any material is not reasonable;(4) There are some problem on expression of estimation problem.We offer some proposals:(1) The part of compiling concepts make requests of estimate content rendering.(2) The part of compiling principles offer operability proposals of estimate content rendering from four aspects.(3) The part of compiling cases provide positive and negative cases for the textbook editors, which are matched with (1) and (2).There are some shortages in this research:As time limited, we have not experiment research of project compiling estimate content in textbooks. And the sample of research is limit. |
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