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. / Graduation date: 1992
| Identifer | oai:union.ndltd.org:ORGSU/oai:ir.library.oregonstate.edu:1957/36395 |
| Date | 28 April 1992 |
| Creators | Ruangruchira, Natsuda |
| Contributors | Evans, Thomas P. |
| Source Sets | Oregon State University |
| Language | en_US |
| Detected Language | English |
| Type | Thesis/Dissertation |
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