| Fractional computing learning is one of the most basic and core contents in elementary mathematics.It mainly includes two aspects: understanding and mastering the algorithm,which is the support of the algorithm.The algorithm is the refinement of arithmetic,and the teaching material is the most important carrier of students’ learning and the most important basis of teachers’ teaching,which to a great extent affects the establishment of teaching objectives,the arrangement of teaching steps and the choice of teaching contents.The use of teaching strategies and the implementation of teaching evaluation.This paper compares the content arrangement of the elementary school mathematics of the personal education edition with that of the Zhejiang elementary school mathematics in the teaching of score calculation.The result shows that the people education edition pays more attention to the consolidation of the algorithm,and the Zhejiang education edition is more inclined to the understanding of the arithmetic.It is mainly reflected in the infiltration of fractional units in advance,the simple data in the examples,the setting of exercises on the understanding of calculation,the open design of examples,the pluralistic analysis of reasoning,and so on.According to the concept of score calculating ability,a survey was carried out on the students who used the Zhejiang Education Edition and the personal Education Edition.The results showed that the students’ mastery of the algorithm was slightly better.The students who use the Zhejiang edition have a deeper understanding of the theory and more diversified angles.Based on the comparison of the above textbooks and the results of the investigation,this paper puts forward the points for attention when teachers use the two editions of textbooks,and sums up the implementation strategies of the teaching of score calculation,such as guiding students to understand the intrinsic relationship between score addition and subtraction and integer addition and subtraction;The emphasis is placed on the analysis of calculation,the introduction of algorithm by reason,the understanding of arithmetic by means of geometric intuitionistic understanding,and the enhancement of the difference of calculation rules in mixed computation and contrast calculation.Then the teaching strategy was applied to the teaching practice of the second batch of students’ score calculation,and the students were investigated with the same ability of score calculation.The students who use the two editions of teaching materials have better mastery of the algorithm than the first group of students,while the students who use the teaching version have a great improvement in the understanding of the calculation,and there is not much difference with the students of the Zhejiang Education Edition. |