Research On The Current Situation And Countermeasures Of Decimal Teaching And Learning In R Primary School By Mathematics Education In Shapingba District Of Chongqing

Decimal, which is the four largest plate primary school mathematics curriculum content, is an indispensable and important content in the field of number and algebra, it is closely linked with integer and fractional and confusion. Decimal teaching compared with fractional teaching, it would be more easier,but the teaching practice shows that there are still many problems with decimal teaching. Therefore, in view of the present situation of the teaching of the decimal, it is necessary to study its existing problems.According to the investigation of students’ test, classroom observation and the interview of teachers and students, in-depth understanding of the status of the R primary school "decimal" teaching. Research conclusions are as follows:(1)Students have no systematic construction for the decimal concept, distinguishing between decimal and integer has the certain difficulty for students. Using conceptual graph to represent decimal classification has obstacles, but the image is characterized in good condition.(2)Calculated on the basis of the students is not firm, number sense of the operation results there is no sentiment, the language of mathematics calculation theory and algorithm expression needs to be strengthened. In the process of teaching, teachers pay more attention to teaching algorithm and computing the results, but they are not given enough time and space to explore the calculation.(3)Application in decimal, understanding of decimal dense is not a big problem, but the number of rewriting has a high error rate. Students show a lack of experience to solve practical problems of the decimal; It’s necessary for teachers to make sure that the integration of the decimal "life" and "Mathematics" of the effective combination and a variety of curriculum resources and do a test before teaching.(4)This paper puts forward some methods to solve: strengthen the teaching example identification of read and write decimal decimals. Strengthen the contact of the decimal in Teaching(old knowledge, and decimal counting unit and the life);Pay attention to the use of image representation in the decimal in Teaching(give full play to the advantages of image representation, in understanding the decimal by concept map to enhance students’ meaningful learning); Pay attention to students’ understanding decimal of teaching(strengthen the students’ mathematical language expression and the specific visual model to help students understand the decimal calculation); Focus on the cultivation of students’ number sense.