A Case Study On Intervention Of Addition And Subtraction Ability Within 100 In Student With Hearing Impairment

Primary school mathematics is a basic subject,which is of great significance to one's learning and development and daily life.Computational ability is an important part of mathematics ability and is the basic ability to form the core literacy of mathematics in the 21st century.The addition and subtraction within 100 has a basic position in the mathematical knowledge system of primary school mathematics.lt is one of the most basic and important contents of elementary school mathematics.At present,domestic and foreign scholars and front-line teachers have more research on mathematics computing ability,but rarely involve the research of mathematics computing ability of hearing-impaired students.The research on the ability of adding and subtracting within 100 hearing-impaired students is rare.For the hearing-impaired students in primary school,the difficulty of adding and subtracting within 100 will directly affect the students' mathematics academic achievements,and it is not conducive to the students' follow-up mathematics learning and life.In this study,a case-study method was used to conduct a paper-and-pen test of eight hearing impaired students in the fifth grade of the special education center.The study focused on one of the students with difficulty in computing.Analyze the current situation of adding and subtracting computing power within 100,and summarize the types of errors in the case test volume and practice questions,and analyze the reasons for the difficulty of computing.According to the current situation of the addition and subtraction of the case and the reasons for the difficulty of computing,we began to intervene in the ability of the case calculation from the aspects of cultivating good mathematical habits,cultivating the sense of number,clarifying the reason,guiding the computing strategy,practicing the science,and strengthening the external support.After two and a half months of intervention training,by observing the classroom performance of the case,and again performing the 100-plus-subtraction test,the case was found to have a certain improvement in mathematics learning habits,learning motivation and computing power.Finally,the researchers reflected on the inadequacies of this study,in order to provide reference for future mathematics teaching,and provide reference for future research.