一年级新入学儿童20以内加减法基本口算能力调查报告

Investigation Report of the Oral Arithmetic Ability blow 20 of the New Students of Grade 1

一年级新入学儿童的加减法基本口算能力很不平衡．10以内加法的口算能力很强，10以内减法的口算能力比较强．20以内进位加法的口算能力比较弱，20以内退位减法的口算能力很弱．数学教学中应重视10以内加减法的基础教学；加强20以内进位加法和退位减法的方法教学；科学进行20以内加减法的口算训练．教材编写时，减法练习题量可适当多于加法．学校和幼儿园之间应多进行幼小衔接方面的沟通．

Through an investigation of the oral arithmetic ability of the new students of Grade 1, it was found that the oral arithmetic ability of addition and subtraction was imbalanced. According to the research of quantify and quality about statistics, such as average, maximum, minimum, full mark percent, errorless percent, standard, deviation, score distribution; the suggestions were presented about elementary math instruction, text book compiling, family education, preschool education.