台中縣市國小自然科教師動物生殖概念之研究

外文標題: 
A Study of Elementry School Science Teachers'' Conception about Animal Reproduction in Taichung Area
校院系所: 
臺中師範學院自然科學教育學系
指導教授: 
劉惠元
出版年份: 
2002年
主題類別: 
摘要: 

本研究之目的在瞭解台中縣市國小自然科教師對「動物生殖」的概念,研究工具主要是開放式問卷、研究者設計的「動物生殖概念」問卷與晤談工具,並分析動物生殖概念是否因不同性別、教學年資、學歷、學科背景而有差異。
研究以分層叢集抽樣,調查台中縣市46所國民小學之自然科教師,共得有效樣本為257人,有效回收率為83.4%。將所得的紙筆測驗及晤談資料,經過量化的描述性統計、t考驗、單因子變異數分析及質性晤談資料分析,歸納後得到之結果發現:一、大部分的自然科教師對於「生殖的意義與目的」,都有相當的理解,但有部分教師以「精卵結合」或「雌雄交配」等部分行為來詮釋,或不認為「分裂」亦為新生命產生的一種方式。二、關於無性生殖,多數教師均能指出至少一種特性,但也有些迷思概念,例如需經由「減數分裂」來產生另一個個體、無性生殖即雌雄同體等。三、有些教師將「生殖」的範圍定在須藉由精卵結合產生的「有性生殖」,亦有教師以「交配行為」或「體內受精」等部分行為來解釋有性生殖。四、教師對動物的生殖方式,對胎生及卵生較為清楚,但對於「卵胎生」的定義便較模糊,認為胚胎發育的養分,由卵與母體提供,或是將卵含在口中待孵化後生出。五、在動物生殖概念的表現:(一)不同性別教師間未達顯著差異。(二)任教自然科年資不同之教師達顯著差異。(三)最高學歷不同之教師間未達顯著差異。(四)學歷背景不同之教師達顯著差異,具數理背景組高於非數理背景組。六、晤談結果發現,教師對現行動物生殖相關課程持正向且肯定態度,但希望能提供更生活化的內容,及更豐富的教學資源與參考資訊。

外文摘要: 

The purpose of this study was to investigate elementary science teachers’ conception about animal reproduction in Taichung area. Research tools were open-ended questions, “animal reproduction conception” questions designed by researcher and interview instruments. We investigated if the animal conception will differ due to genders, teaching experiences, educational level and education background.
Research investigated science teachers selected from 46 elementary schools in Taichung city and county. Total valid samples are 257 with a recovery rate of 83.4%. From the data obtained by quantitative descriptive statistics, t test, one-way ANOVA and qualitative interview data, we found that:
1. Most nature science teachers have good understanding in “meanings and purposes of reproduction”. However, some of them explain animal reproduction by “insemination” or “copulation”; some did not regard fission as a way of reproduction.
2. As to asexual reproduction, most teachers can point out at least one characteristics of asexual reproduction. However, misconceptions such as individuals can be generated through meiosis, or asexual reproduction equals to hermaphroditism do exist.
3. Some teachers restricted reproduction in “sexual reproduction” only. Some of them explained sexual reproduction by mating behaviors or internal fertilization.
4. Teachers’ conception in viviparity and oviparity is more clear than in ovoviviparity. Some thought embryos got nutrition from ovum and mother, others thought eggs were bred in the mouth.
5. Teachers’ conceptions about animal reproduction are:1.There is no obvious difference between male and female teachers. 2.There is an obvious difference between teaching experience. 3.There is no obvious difference between educational level. 4.There is an obvious difference due to the education background. Teachers with science background are better than teachers with other background.
6. From the interview data, the teachers tend to have positive attitude toward the current course materials about animal reproduction. However, they hope that materials can be more close to life experience, and that the publishers can provide more teaching resources and information.