| Summary: | 碩士 === 臺北市立師範學院 === 科學教育研究所 === 90 === A Study on the Conceptual Cognition of Speed and its Concerns of Elementary Students from Grade 3 to Grade 6.
Abstract
The purposes of the thesis are to explore the cognitive conceptions of the third graders to the sixth graders about speed and to understand their alternative conceptions concerning speed. The results are induced and classified.
The study is conducted by one to one interview. The interviewees, the parent population, are the third to the sixth graders of one grade school in Hsing Chung city. Random sampling is done on the performance of the subject of natural science from the third to the sixth grade. Each grade has twenty students.
The instruments applied in the paper are title groups of the cognitive conceptions related to speed and the interviewing instrument, which is computer animation designed by Director 8.5 of Macromedia. The script of the animation is written based on the main ideas of the title groups. The results of the thesis are:
1. The cognitive concept stages of speed of the third to fifth graders are lower than that of Piaget’s research.
2. Most sixth graders have the correct concept of speed.
3. The developing orders of children’s concepts related to speed are: the concepts of distance earlier than that of speed and the concepts of time the last.
4.The features of children''s alternative conceptions of speed are:
(1) When students judge speed with the intuitive experience, there is nothing to do with the distance and time.
(2) Relative location is applied to judge speed.
(3) Only one variable of distance or time is considered.
(4) As long as two cars arrive at the same time, they are at the same speed disregarding the influence of distance.
(5) The phenomena of catching up and surpassing are the ways students judge speed.
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