The Exploration To The Effect Of Mental Distance In Children's Numerical Estimation

Estimate ability is cognitive development to a certain degree of comprehensive ability,reflects the high generalization and a comprehensive evaluation of information,the estimated capacity of the children's early development of awareness has a role in promoting.The research shows that the estimation ability of children's mathematics is positively related to their mathematical knowledge and ability.Therefore,the early development of children's estimation ability has been paid more and more attention.Because of its good ecological validity,digital line estimation has become a mainstream research paradigm,which has been adopted by many scholars in China and abroad,and received good results.The research on digital attribute from the children's cognitive perspective,using the digital line estimation method,to investigate the length in different range and different digital line to estimate the impact of psychological development of children and the number of tasks in length representation models.It selects the children in Grade One and children in senior kindergarten,a set of experiments was performed to estimate the number of children in two different digital ranges of 0-50 and 0-100 at a length of 10 cm.The other group is a different digital lines,The digital line task is set to two experimental lengths:10cm and 20cm,select the children in the same ranges of 0-100 to estimate.Two groups of children were required to complete the digital line estimation NP task(that is,to determine the location of the number).Based on the numerical estimation of two kinds of tasks,the number of children in senior kindergarten and Grade One are in different digital scope and length,the results showed that:(1)The children in senior kindergarten and children in grade one may have psychological length in the estimation of the low side number and the terminal number.(2)The children in senior kindergarten have the characteristics of the logarithm and the linear,and as the age increases,it transits to linear representation.(3)The accuracy of children's digital estimation is higher than the low end number and terminal number,the accuracy of children's digital estimation presents that both sides are low and centre position is high.