Investigation And Research On The Present Situation Of The Ability Of Primary And Middle School Students' Calculated Ability

Computing ability is the basic mathematical ability of junior high school students,but also one of the main training objectives of junior high school mathematics teaching.It also puts forward the cultivation of students' "mathematical operation" ability in the newly mentioned "mathematics core accomplishment",and the rational operation is students The initial content after entering the junior high school is the basis for learning other mathematical contents.Therefore,it is very important to improve the students' rationality and to improve the mathematical confidence.However,regardless of the actual teaching or educational research,this important course content lacks the necessary attention and attention.For adult teachers and educational researchers,it is seldom aware of the impact of the rational numbering on the number of students who have just entered the first year.This paper aims to understand the status quo of the ability of the first-class students to calculate the rationality of computing ability,from the three dimensions of the computing ability(the operational meaning,the computational arithmetic ability,the flexibility of the formula,the rule,the theorem,the simplest operation,The ability of the optimization of the specific test,the preparation of a targeted questionnaire,through two middle-level schools above the 186 primary students a reasonable number of computing capacity level of research and data analysis,summed up the analysis of the primary students a reasonable number of computing power level Of the status quo,while students in the test volume appears in the common types of errors,and thus put forward targeted teaching recommendations.The study found that:(1)the overall level of the primary unit of arithmetic capacity of 3.0(multiple structure level).(2)the ability to rationalize the calculation of the rational operation,the ability to simplify the operation,and the ability to optimize the method.),The average level of the order is: 2.6,3.4,3.0,we can see that the first students of the formula,the rule,the theorem of the flexible application of high capacity,the meaning of the operation,the arithmetic and understanding of the simplified operation,the method of optimization Low capacity,especially for operational significance,the lowest understanding of computing algorithms.(3)students in the test volume in the calculation of the number of common types of errors Summary: rational number related concepts,the nature of confusion;the rational operation of the meaning of arithmetic operations,computing is not thorough understanding,especially for the calculation of negative arithmetic is difficult;In the end is the operation of the symbol or the nature of the symbol,some students blurred;rational number algorithm,the operation order application error.Finally,the study based on the study found that some teaching recommendations.From the three dimensions,respectively,the first dimension:(1)teachers use appropriate models(such as intuitive model,number axis model)to students of heuristic teaching,students accept it down,and then practice,in practice to consolidate.(2)curriculum development and textbook writers,for understanding the knowledge should be more clearly defined and give a more detailed explanation;the second dimension:(1)the use of student mobility to teach.(2)to keep abreast of students learning situation,to correct students misunderstandings;third dimension:(1)to strengthen the penetration of commonly used mathematical thinking.(2)appears a question more solution,pay attention to the method of comparison.