Computer multiple dynamic representation and the concept construction of weather unit to third-grade elementary school students

Author planned to discuss Multiple Dynamic Representation with interactive whiteboards when learning triple points of Weather Unit and the impact of dynamic representation that affects science construction. Quasi-experiments was applied in the research, author had third-grade students whose classes were under normal grouping to be samples. The control group was a class with 23 students who were under direct instruction, and the experimental group were 2 classes with 54 students who were under Multiple Dynamic Representation instruction. Furthermore, author took last semester scores of students as pre measurement value, and the scores of students after the teaching as post-measurement value, most important of all, the difference between scores of science concept construction test were analyze. It shows that: 1. Students are highly interested with the material of instruction that with dynamic representation. 2. It's useful to construct students' Weather Unit of concept through applying dynamic representation when present abstractive concepts. 3. The most significant and positive reaction (when applying dynamic representation to present abstractive concepts) was found in low and middle-scored group, then mid-scored group, and there are no significant effects to high-scored group. 4. Technology readiness will affect learning effects. IWB to show multiple dynamic characterization of the interest and the effectiveness of interest and self-assessment produced by the interaction with a significant impact, and usefulness of the IWB is not obvious.