| The basic education curriculum reform has made the adjustment and the additions and deletions to mathematics curriculum content in primary school. It is the most prominent change to put the minus content into primary school. The minus involves the concept, the number axis, the absolute value, the rational number operation and so on. The new curriculum put the minus contents to the elementary school teaching partially. How to locate minus curriculum teaching, how to grasp it in teaching in primary school is puzzling the current mathematics curriculum teaching in primary school directly. This question is not"the simple copy"from minus content in junior middle school but involve a variety of factors.In this study, with the literature, interviews, questionnaire survey, as well as classroom observation, we analyze the minus content and its implementation in primary school deeply, aimed at finding the basic law of minus content and its implementation in primary school according to the requirement of "the Full-time Compulsory Education Mathematics Curriculum Standard (Experimental Script)", referring to the minus ' present of different textbooks, the implementation of minus, and testing of minus in primary school..Research shows that the minus ' basic curriculum localization of target in primary school is to"understood the significance of the minus in the familiar life situation and to express some questions with minus in daily life"in "the Full-time Compulsory education Mathematics Curriculum Standard (Experiment Manuscript)". Overall, it is necessary to establishe the minus content is and the correct choic e in the elementary school mathematics curriculum.It is can be verify by minus study effect's test result as well as the teaching interview.Nowadays, the three most representative editions of the experimental textbook are published by Bei Jing Normal Univercity Press and Jiang Su Press, People Enducation Press. Through the contrastive analysis, we discovered that the curriculum project and textbook present are successful as a whole in pramiry school. there were some differences among the three editions in the curriculum content capacity, the arrangement system, the content present the way, the source material selection, compilation style have certain difference and manifests respectively the different design feature. At the same time, with students'actual situation of receiving it, the appropriate analysis and test results of students, we discovered that the tenching of minus is effective verified by its implementation in primary school.At the same time, the research indicated that there are many problems which are urgently await to be solved in minus curriculum and its teaching in primary school. These questions are performance in minus curriculum content and curriculum implements in primary school. But somewhat caused by the mathematics accomplishment insufficient of mathematics teacher in primary school.we can improve the effects of the minus'contents and its implementation by adopting the followings:First, it is necessary to strengthen the minus mathematics meaning research in primary school,to Accumulate minus teaching experience and experience to enhance teachers'teaching processing art to enhance mathematics teacher's mathematics training unceasingly in primary school. Next, improve minus curriculum project arrangement in primary school.The elementary school minus content adopts screw type and lays aside the fourth-grade level and the sixth grade separately. It is comparatively proper to lay the minus content after score and decimal preliminary understanding from the elementary school scope's number system expanding. From extent and the depth of the curriculum, it is suitable to read, write the plus and minus, understand that 0 is the dividing line between plus and minus, to realize that the minus expressed the opposite meaning, the temperature difference, and to use the minus to express in some daily life question. But the sixth-grade suitable arrange the number axis preliminary understanding, the preliminary sensation number axis the positive number and the minus arrangement rule, forming the complete related positive number and the minus cognitive structure initially, carrying on the integer relative size, grasping 0 relativities, the negative counter-balance, using the minus to express that in the life question and carrying on the simple explanation. The way of abstracting the minus content based on the situation is quite appropriate to present the minus content.Finally, the teaching strategy and method of minus are improved further in primary school. In the implementation of minus teaching in primary school, it is essential to design the situation of minus concept introduction carefully and to manifest its necessity as well as its superiority of the sign of minus. Also it is significant to integrate negative score into the minus concept in teaching, to use many kinds of materials to open out the meaning of 0, to grasp the degree of"adaptation"and mathematization". |
