A Comparative Study Of The Trigonometric Functions Of The Current Five Versions Of High School Mathematics Textbooks

Since the Ministry of Education promulgated the “National Standards of High School Math(experiment)” in 2003,every province start a new innovation of high school curriculum separately in 2004.Under the guidance of new curriculum standards,the Committee of Teaching Material Judgement of National Middle School and Primary School has passed and launched the below experimental textbooks in2004: PEPA edition?PEP B edition?BNU edition?Jiangsu edition?Hunan edition these 5 sets of high school curriculum standard experiment textbook(mathematics),which inform a situation of "one standard with multiple editions".What's the feature of each the 5 sets senior high school mathematics textbooks?And how about the practical application in the teaching practice? This article take the contents of senior high school trigonometric function as an example,comparing the 5 sets senior high school mathematics textbook by the following aspects:1?The comparison of textbook style, mainly including the comparison of introduction(Chapter previous figures, directories, text description),extracurricular inquiry-based learning,reading materials, the service condition of information technology and chapter summary and so on.2?The comparison of contents of textbooks, mostly the importing of radian system any angle trigonometric function these two important concepts,the importing and presenting about the trigonometric formula and theorem,the teaching contect of transformation of triangle and its image,the teaching content that reflect the periodicity of trigo-nometric function.3?The comparison of teaching difficulty, mainly compared the difficulty of senior high school mathematics textbooks from the deepth?breadth and composite difficulty of exercises.And then to describe the composite difficulty of textbook example exercises in 5 dimensionality.Through the comparative analysis,we can get the basic feature and characteristic of the 5 edition textbooks regrading the compile of trigonometric function teaching content.And the 5 editions textbooks are in common features: with rich teaching style,with completed basic structure of teaching materials,all value the reflect of trigonometric functions periodicity,and the difficulty of textbook is suitable.In the preparation of teaching materials characteristics, PEP A edition is the most prominent. PEP A edition truly embodies the teaching philosophy of "development of students is main" in respect of the selection of material, reflect ofmathematicsnature,process of extra-curricular expansion,development of independent research capacity,arrangement of example exercises,reflect of mathematics culture and so on; it is also in line with the present situation that most of the country choose to the PEP A edition. And the range of application of other editions are smaller.Textbooks changes with the primary multiple editions gradually back to the situation of one edition occupies the main position,which make us to introspection what's the meaning of "one standard with multiple editions".