Study On The Teaching Of Decimal Vertical Calculation

Calculation plays an irreplaceable role in the whole mathematics teaching.It not only directly affects the calculation ability of students,but also affects the cultivation of students' logical thinking ability.It is also the basis of continuing to learn mathematics and other subject knowledge,and it has important practical value in daily life.Therefore,it is very important to strengthen the calculation teaching of primary school students and improve their calculation ability.The vertical form is a kind of writing form of penmanship,which is the process and form of penmanship.The function of vertical calculation is to simplify the calculation,and simplify the calculation of multi digit numbers into the calculation of addition,subtraction,multiplication and division between 0-9 ten numbers.Decimal is a common mathematical content in daily life.The content of decimal vertical calculation runs through the textbook content of grade three to grade five in primary school,and it is one of the important content of mathematics calculation teaching in primary school.Based on this,this paper takes 360 fifth grade students from two primary schools in T City as the survey object,mainly adopting three research methods: literature analysis,questionnaire survey and interview.On the basis of theoretical basis and current investigation,the author tries to put forward several teaching principles and strategies,as well as the teaching design and case analysis of decimal times decimal.The specific research contents are as follows:First of all,it defines the related concepts,including fraction,decimal,decimal counting principle,vertical calculation,digit value principle,decimal calculation teaching and other concepts.This paper describes the relevant teaching theory and common teaching methods,and makes a simple analysis of the decimal content in the primary school mathematics textbook.Secondly,360 fifth grade students from two primary schools in T city of Inner Mongolia are taken as the test objects.By means of questionnaires and interviews with relevant teachers,the survey is carried out around the teaching situation of decimal vertical calculation,and then the data obtained are sorted out and analyzed one by one by using Excel tables.Finally,based on the theoretical basis and the investigation of the current situation,this paper attempts to put forward the teaching principles and strategies,including: improving the teachers' ability and the effect of preparing lessons;stimulating the students' interest and giving full play to the students' main role;paying attention to the optimization of strategies and guiding the students to understand the calculation;expanding the teaching methods and enhancing the interest of teaching;paying attention to the oral calculation,strengthening the written calculation and learning the estimation;implementing the layered practice Learning and expanding teaching forms.This paper designs the teaching case of multiplying decimal by decimal,and analyzes the teaching design in depth,and then puts forward specific and feasible teaching suggestions,in order to provide feasible reference materials and related materials for primary school mathematics teachers.We hope to further improve the decimal vertical meter.It is beneficial to improve teaching quality and cultivate students' computing ability.