Graduate Thesis Or Dissertation
 

Development and use of an instrument to measure student misconceptions of selected science concepts at the elementary school level in Thailand

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  • The purpose of this study was to develop an instrument to provide valid and reliable measures of misconceptions in the area of photosynthesis and respiration among fourth, fifth, and sixth grade students in Thailand. A 17-item, two-tier multiple-choice test was developed and validated using construct-related evidence to determine the appropriateness of inferences from a set of test scores. The test was administered to 4,346 students in the fourth, fifth, and sixth grades in schools throughout Thailand. The study attempted to identify misconceptions held by Thai elementary students in the area of photosynthesis and respiration, and to examine the effects of grade level and gender on students' understandings of these concepts. A two-way analysis of variance, with grade level and gender as independent variables, was used to analyze test scores. Findings revealed that: (a) The two-tier multiple-choice test was valid and reliable; (b) mean scores among grade levels were significantly different (p=0.001); (c) mean scores between male and female genders were not significantly different (p=0.180); and (d) there was a significant interaction effect between grade level and gender (p=0.005). From these findings, the following was concluded: (a) The two-tier multiple-choice test provided valid and reliable measures of student misconceptions of selected science concepts at the elementary school level in Thailand; (b) most Thai students in grades 4, 5, and 6 held a large number of misconceptions of the selected concepts; (c) a majority of the students answered the content questions correctly, but did not understand the justification for the correct responses; (d) the higher the grade level, the greater the understanding of the concepts; and (e) female and male Thai students in grades 4, 5, and 6 did not differ significantly in their understanding of photosynthesis and respiration.
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