Research On Training Strategies Of Numerosity Estimation To Improve The Development Of Pupils' Number Sense

Ability to estimate students has become a new topic in math teaching, At the same time, Number Sense also been more and more attention,Collation of Estimation and Number Sense in previous studies, We discovered that they are bothdomain important aspects in the children mathematics study, Have the vital role to the children mathematics thought formation and the number relations' understanding and the assurance. This research feels two angles of view from the Estimation and the Number Sense, Take elementary school lower grade students as object of study. Studies one through the preliminary design number line estimation task program,Measured that looks up the elementary school lower grade children quantity estimation by Numerosity Estimation,through strategies training,The inspection quantity estimation strategies training estimates the attribute and the accuracy influence to the elementary school lower grade students. Study two will count the Number sense and Numerosity Estimation unifies, The utilization from arranges the questionnaire to measure that looks up Numerosity Estimation training influence number sense. The main results of this research are the following:1.Urban elementary school lower grade children in 0-1000 numerical ranges, Majority of students in quantity estimation attribute, Presents the linear attribute pattern.2.Through strategies training,Regardless of the experimental class have the remarkable enhancement in the number line estimation accuracy and in estimate attribute way's each variable,Has the remarkable difference with the comparison class. Had indicated quantity estimation strategies training is enhancing the number line estimation aspect the validity.3.The number line estimation has certain promoter action to number of students number sense.Through number line estimation training,Experimental class and comparison class in understanding number significance, Understands between the number and the number between the relations as well as the distinction number and the number the size, In solves in the question majority of topics using the datum quantity to have the remarkable difference. In understanding operation logarithm influence,Chooses the suitable strategy method to solve the problem and can make the judgment aspect to the result rationality,The experimental class and the comparison class has not had the remarkable difference.