| Summary: | 碩士 === 國立臺中教育大學 === 數學教育學系在職進修教學碩士學位班 === 98 === This study is aimed at exploring second-grade students’ concepts of addition and subtraction word problems of knowledge structures and understanding of students in learning the addition and subtraction word problems, pitfalls, and misconceptions.
The methodology used in the present study employed four classes of a second-grade elementary school students from Taichung County as the participants. After the examination, the researcher used SPSS/PC statistic associated with software packaging and the structural theory of questions and IRS to analyze the data. The results from this study are as follows.
1.chang, merge, compare, and equalization are four types of word problems for analyzing the concept of a single sub-analysis.
(1) In changing the model, to remove something is easier than to add.
(2) This stage, students’ application strategy in addition is better than subtraction.
(3) In addition and subtraction word problems, the combined type of the entire amount of the unknown is a type of all students can best grasp.
(4)Based on the comparison, the comparative amount of the unknown by the introduction of differences in the amount of the unknown, will be easier for students to understand.
(5)In the equalizer type, based on the order of their learning differences as a reference volume of unknown → differences in the amount of unknown → comparison of the amount of unknown.
2.change, merge, compare, and equalization, the four types of word problems for the concept of two sub-analysis.
(1)By a merge-type of the entire amount of unknown introduction changing type, comparative type, equalization type differences in the amount of unknown and equalization adding type comparison of the amount of unknown, will be easier for students to understand.
(2)To change the results of the amount of addition type is unknown and with the combination, comparison and equalization types are not associated with upper and lower figure.
(3)From the equalization type of reference of the introduction of differences between amounts of unknowns, will be easier for students to understand.
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