都留市内保育所特別研究報告（Ⅲ）
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概要
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The author has been investigating how young children acquire the concept of numbers atTakara day-care center in Tsuru under a grant from Tsuru University for Special Researches.Since March 2011, we have also investigated in Miyoshi day-care center in Tsuru. As a resultwe have changed the title of these serial papers to “Special Research Report at DaycareCenters in Tsuru City” from “Special Research Report at Takara Day-Care Center”.The results of experiments which treated number concepts are explained and introducedin this paper. The experiments were carried out over seven days between October 2010 andMarch 2011.In chapter 2, the results of the experiment on October 4 with a class of 3-year old childrenare reported. In this experiment we examined the children’s abilities of comparing thecardinality, of understanding the equality of cardinalities smaller than 6, of making one-to-onecorrespondence between beats and cardinality fewer than 4, of comparing the cardinalities bypiles, and of understanding of increasing.In chapter 3, the results of the experiment on October 25 with a class of 4-year old childrenare reported. In this experiment we examined the children’s abilities of understanding ofincreasing, of making piles of size 5, of comparing the cardinalities by piles.In chapter 4, the results of the experiment on November 4 with a class of 5-year oldchildren are reported. The experiment treated the abilities of making piles of size 5, ofcomparing the cardinalities by bocks, and of understanding the one-to-one correspondencebetween piles and numerals.In chapter 5, the results of the experiment on December 20 with a class of 3-year oldchildren are reported. The experiment treated the abilities of understanding the equality ofcardinalities smaller than 6, of making one-to-one correspondence between beats andcardinality fewer than 4, of comparing the cardinalities by piles.In chapter 6, the results of the experiments on December 22 with a class of 4-year oldchildren are reported. The contents of this experiment were similar to those of chapter 5.In chapter 7, the results of the experiment on February 1 with a class of 5-year old childrenare reported. The experiment treated the comparing ability of quantities by their fivecardinality pile representation, the making ability of five cardinality piles, making ability ofthe corresponding numbers of piles, and understanding ability of pile sizes by thecorresponding numbers.Chapters 8 and 9 report about the results of experiments at Miyoshi Daycare Center with aclass of 5-year old children.In chapter 8, the results on March 1 are reported. The experiment treated the abilities ofmaking piles of cardinality five, of understanding quantity by piles of cardilnality five, and oftelling numerals corresponding to the number of piles.In chapter 9, the results on March 2 are reported. The results of the experiment about theabilities of understanding of comparing quantities by piles, of representing quantity bynumbers, of comparing two piles by their numeric representation are presented.
- 2011-10-20
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