| Summary: | 碩士 === 國立臺北教育大學 === 數學暨資訊教育學系(含數學教育碩士班) === 97 === The purpose of this study is to investigate the learning effect of fifth graders on reflection. Quasi-experimental method with nonequivalent pretest-protest controls is adopted. There are 33 students in each of experiment group A and experiment group B. Teaching strategy from 2D to 3D”was conducted in the experiment group A and the other teaching strategy from 3D to 2D was conducted in experiment group B. Qualitative analysis and quantitative analysis were emphasized on the study. Some main findings of this research are showed as follows:
1. Learning effect.
(1)After excluding pretest score, there is no significant difference in the performance of adjusted protest and that of adjusted follow-up test for both groups.
(2)After excluding pretest score, there is no significant difference in the performance of protest and that of the follow-up test for both groups.
2.Interaction test based on mathematics ability and teaching strategies as well as gender and teaching strategies.
(1)There is no significant interaction between mathematics ability and teaching strategies in learning effect.
(2)There is no significant interaction between gender and teaching strategies in learning effect.
3. Learning situation.
(1)Problem solving strategies: making use of symmetrical property to get answer, making use of elimination method to find out the right answer, turn over the test-paper, have one object decomposed into several parts for answer, make use of model concept for answer, flip image manipulation, instinct judgment, count nail-point to ascertain the position, and use items of choice to trace back to the original object.
(2)Error types: one has not fully appreciated the problem, parallel method, elongation method, random guessing method, rotation method, and one has been affected by the model concept, one object is decomposed into several parts for individual administration, concept of symmetry is not fully appreciated, and all of the images formed within reflection should be reversed, rotation method.
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