CAJ | 학술논문

选取二、三、四年级数学学习困难和数学学习正常的儿童共84名。采用数字线估计任务考察两类儿童数量估计能力的发展特点及差异。结果表明：（1）二年级儿童完成数字线估计任务的精确性显著低于其他两个年龄组;（2）数学困难儿童完成数字线估计任务的精确性显著低于普通儿童;（3）二年级数学困难儿童完成数字线估计任务时采用指数和线性函数进行表征,而其他年龄组儿童均采用线性表征形式。
선취이、삼、사년급수학학습곤난화수학학습정상적인동공84명。채용수자선고계임무고찰량류인동수량고계능력적발전특점급차이。결과표명：（1）이년급인동완성수자선고계임무적정학성현저저우기타량개년령조;（2）수학곤난인동완성수자선고계임무적정학성현저저우보통인동;（3）이년급수학곤난인동완성수자선고계임무시채용지수화선성함수진행표정,이기타년령조인동균채용선성표정형식。
A total of 84 primary school children（from Grade Two,Grade Three and Grade Four） both with mathematics learning difficulties and with normal mathematics learning abilities have been selected in this research,which,by means of the digital line estimation task,aims to probe into the development of and the difference in the numerical estimation competence of the two kinds of children.The results show the following：（1） The children from Grade Two show a significantly lower accuracy in the fulfillment of the digital line estimation task than those from Grade Three and Grade Four.（2） The children with mathematics learning difficulties demonstrate a significantly lower accuracy in the fulfillment of the digital line estimation task than those with normal mathematics learning abilities.（3） The children from Grade Two with mathematics learning difficulties perform the digital line estimation task by using an exponential and linear representation,whereas those children from Grade Three and Grade Four accomplish the task merely by means of a linear representation.