Effects of advance organizers on student acheivement in general chemistry Public Deposited

http://ir.library.oregonstate.edu/concern/graduate_thesis_or_dissertations/8k71nk402

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  • The purpose of this study was to investigate the effectiveness of an expository advance organizer on the achievement of students in a general chemistry course. The subjects included 181 first year college students enrolled in 12 sections of general chemistry at the Chulachomklao Royal Military Academy, Thailand. The subjects were randomly assigned by section into two treatment and control groups. The treatment groups received an advance organizer or an introductory passage prior to instruction. The control group received no treatment prior to instruction. The equivalence of the control and two treatment groups at the beginning of the study was determined by the application of a teacher-made pretest. No significant differences in chemistry achievement were found among the three groups. Prior to classroom instruction and laboratory instruction, the advance organizer group received expository organizers, and the introductory passage group received introductory passages to read and study. The treatment period covered 21 days of instruction. Upon completion of all study material, a teacher-made achievement posttest covering the material taught during the study was administered to all groups. The posttest was administered again two weeks later as a retention test. Achievement test scores were analyzed by use of a one-way analysis of variance. The results indicated that the advance organizer group performed significantly better than the control and introductory passage groups on the achievement posttest and retention test. Theses findings provided evidence that an expository organizer facilitated learning and retention of general chemistry more than an introductory passage and no treatment. These results supported Ausubel's Advance Organizer Theory in the facilitating effects of advance organizers on student achievement.
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  • File scanned at 300 ppi (Monochrome) using ScandAll PRO 1.8.1 on a Fi-6770A in PDF format. CVista PdfCompressor 5.0 was used for pdf compression and textual OCR.
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