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This study is designed to investigate study on the alternative
framework of plane mirror-forming of junior high school students
andthe strategy for teaching improvement. This study includes
two stages and has four objectives:(1) Diagnose the alternative
framework of plane mirror-forming of junior high school third-
grade students. (2) Investigate the influence of the strategy
for teaching improvement on the change of the incorrect
concepts of plane mirror image-forming(3) locations o f the
students. Investigate the influence of the strategy for teaching
improvement on the change of the incorrect graphic method of
plane mirror image-forming of the students. (4) Investigate how
the strategy for teaching improvement has altered the types of
the alternative frameworks of the student's plane mirror image-
forming. During the first stage of the study, the pen-paper test
and interview were adopted as the methods. The sample taking
the pen-paper test included117 students drawn from the third-
grade students of a junior high school in Kaohsiung(the 1996
academic year). The results of the test were analyzed and
classified, and typical students that were representative of
each, framework were selected to interview. During the second
stage, teaching taking the pen-paper these included 34 students
draw from the third-grade students of a junior high school in
Kaohsiung(the 1997 academic year). The pre-test and post-test
results were analyzed and classified respectively, object to
manipulate and operate in order to induce them to generate and
release ideas. After analyzing the results of the pen-paper
test and interview and the teaching of natural sciences
teachers, we came up with the following findings:1. The
alternative frameworks of plane mirror-forming of junior high
school third-grade students:(1) Extension of plane mirror
image-forming at the time of catching sight of objects.(2) The
reflexive point of the location of the plane mirror image-
forming when the object emits light rays that reflects through
the plane mirror surface. (3) Use connecting line between image
and eyes to determine whether the image-forming from the plane
mirror can be caught sight of. (4) Come into sight of the
image-forming from plane mirror only as the image-forming falls
within the line of vision.(5) Come into sight of the image-
forming from plane mirror only as the image-forming falls
within the line of vision.(6) The image-forming in the plane
mirror is the shadow of the object on the mirror surface. (7)
Image-forming of plane mirror is the projection of objects on
mirror.(8) Students generally make diagram by a ray of light to
determine theimage-forming position. 2. Discrepant events and
POE programming teaching could be a reference to correct the
image-forming location of the students.3. The teaching method
that incorporates group discussions could be areference to alter
the student's image-forming graphic in the plane mirror.4. The
strategy for the teaching improvement used in this study could
be a reference to alter the Type 1, Type 2 and Type 7 of the
alternative frameworks of the student's plane mirror image-
forming.
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