為協助學生發展更主動與合作的學習方式，透過「學習社群」(learning community)以共構知識，本研究運用以知識翻新（knowledge-building）（Scardamalia, 2002）理念為基礎所建立的數位學習環境—知識論壇（Knowledge Forum）—進行教學。研究目的主要在於探究學生如何透過數位學習平台以進行合作學習、並共構自然科學史知識。研究對象為修習自然科學基礎課程的大學生（N=42）。教學目標主要在幫助學生瞭解自然科學的內涵與歷史發展，並希望藉由知識分享與共構活動讓學生在平台上合作建構科學史。資料來源主要為：（1）授課教師和學生在知識論壇平台上的活動紀錄；（2）學生在知識論壇平台上的貼文與討論；（3）學生共構的科學故事；以及（4）學生對自我學習歷程的期末反思。資料分析主要透過：（1）描述統計—以計算學生在平台上所共構的科學史故事數目貼文數、回文數、與文章閱讀百分比等；（2）內容分析法—以分析教師如何營造知識翻新環境和學生如何發展對科學理論的理解；以及（3）史皮爾曼等級相關分析—以瞭解學生在知識論壇上的活動情形與期末反思強度間之相關性。研究結果發現：（1）以知識翻新原則為取向的課程設計有助於促進學生主動學習；（2）學習社群集體共構科學史可以促進學習者以較宏觀的視野看待科學史；（3）提供合作學習與知識翻新環境(即知識論壇平台)能有效幫助學習者共負集體合作的責任；以及（4）使用知識論壇平台有助於學習者進行更有效益的集體知識建構活動。本研究根據研究結果提出以下幾點建議以供未來有興趣進行知識創新教學的教師之參考：（1）教師應適當採用彈性的課程設計、同時避免過度使用傳統劇本式教學，以培養學生主動學習的習慣；（2）教師應讓學生學習如何面對較彈性、多元的學習內容，使其對某一學習主題可以有機會做更深層的理解；（3）教師應為學生營造知識共構的學習環境，協助學習者創建集體知識；以及（4）教師應善用電腦支援合作學習環境的相關工具以協助學習者進行知識共構與翻新。

本研究旨在探究學習者在wiki共筆、數位閱讀標註及知識論壇三種不同知識建構導向之電腦支援合作學習環境下，其合作知識建構與問題討論歷程差異，再則這三種不同學習環境是否營造不同知識建構氛圍，以及對支援知識建構是否有所欠缺。最後，針對研究結果提出有效知識建構教學的實施策略與建議。 本研究採實驗研究法，以某國立大學數位碩士在職專班19名研究生為研究對象，分別依序體驗包括wiki共筆、合作式數位閱讀標註及知識論壇三種各具特色的知識建構導向合作學習環境，進行知識建構討論與分享，藉由搜集觀察上述三種學習環境之知識建構歷程討論及成果記錄，進行知識建構及問題解決討論概念編碼後，進行序列分析，依此觀察學員們知識建構演進之歷程，並評估問題討論的互動程度，最後輔以半結構式訪談，與序列分析結果進行交互驗證。 結果發現學員在wiki共筆、合作式數位閱讀標註及知識論壇三種知識建構環境上，共同合作建構產出的知識建構成果均呈現一定品質水準，確實有助於輔助學生之共同知識建構成長。此外，三種電腦支援合作知識建構學習環境中，知識論壇在適當教學設計與學習策略實施下，較能發揮知識建構水準；知識論壇相當適合於問題解決討論；三種知識建構導向之電腦支援合作學習環境，對於完整支援知識建構仍有不足需要強化之處，特別是為促使學員更深入討論，以達更深層的知識建構，需要更好的教學設計與學習策略。 最後本研究根據研究結果，歸納出幾點建議，作為教師在進行合作知識建構教學時，選擇電腦支援合作學習環境之參考，並對未來研究方向提出建議。 / The major purpose of the present study was investigate the learners would have the differences of the progress of knowledge construction and problem discussion, which were under the three different guided knowledge construction in the computer-supported collaborative learning environments, the three learning environments including wiki, knowledge-based annotation learning system, and Knowledge Forum. A secondary purpose of this study was to examine if these three different learning environments would build the variety atmospheres of knowledge construction, and then the deficiency in the computer-supported collaborative learning. Finally, the conclusion drawn above should be proposed the efficient policy and suggestion in relation to the effective teaching of knowledge construction. The method to carry out this study was using an experimental research. The participant in this research were 19 postgraduate students enrolled in executive master of digital systems in one national university. In this experiment, all participants experienced the three different guided knowledge construction in the computer-supported collaborative learning environments in order, each differs from one another, including, wiki, knowledge-based annotation learning system, and Knowledge Forum. Furthermore, all subjects focused on the discussion and shared the progress of the knowledge construction and the results of the accomplishment by searching and observing the above three varied environments. The data of knowledge construction and problem solving were to conceptual encoded and processed the sequential analysis in order to observe the evolution of the progress of knowledge construction of all subjects, and to estimate the level of interaction of problem discussion. Lastly, we used the auxiliary semi-constructed interview and the result of sequential analysis to work with the cross-validation. The findings suggest that the participants produced the conclusions with coordinated knowledge construction which appeared in a certain quality, and this result indeed helped learners to grow-up in the coordinated knowledge construction. Additionally, Knowledge Forum firstly developed well standard under the congruent design and tactic of teaching in these three computer-supported collaborative learning environments. And then Knowledge Forum would be even more proper to discuss the problem solving. However, there is an insufficient part which needs to be strength of the three guided computer-supported collaborative learning environments for the complete computer-supported learning environments, most particularly, to be able to stimulate the subjects would go deep into the discussion in order to achieve the more depth of the knowledge construction, at the same time require the preferable instructional design and learning strategy. On the basis of the findings we sum up the few suggestions: As teacher, this study would be a reference to choose computer-supported collaborative learning environment when teach the coordinated knowledge construction, and then to address the suggestion in relation to the future research.

本研究旨在探討如何設計以建構主義為基礎的網際網路合作學習環境，以研發二次函數網際網路課程，並藉由實驗研究法分析在網際網路合作學習情境中，不同的學習型態與認知風格對於學習成效之影響，最後以質性研究法探討學生合作互動歷程之認知模式及相關影響因素，並分析學生學習二次函數易犯之錯誤類型。 本研究使用之研究方法包括學習軟體研發、實驗研究法、問卷調查法、晤談法、及內容分析法。研究者首先研發及評量「二次函數網際網路課程」，並隨機選擇國民中學二年級學生60名為研究對象，依學習型態及學生認知風格分成內控單獨組、外控單獨組、內控合作組、外控合作組、內外控混合合作組等五組進行教學實驗。俟教學實驗後進行紙筆測驗、問卷調查、及晤談，研究者並搜集學生在電子白板上的對話進行內容分析。根據研究結果分析，本研究主要之結論如下： 一、網際網路合作學習環境有助於學生學習數學二次函數概念在網際網路合作學習環境中，提供合作的視覺學習環境，協助學習者多重轉化代數表徵成為幾何表徵的動態網頁，使學習者在不同條件脈絡中進行比較、反思，以了解二次函數中代數與幾何的關係，已有具體的教學成效。 二、 在網路學習環中，不同認知風格的學生在個別學習效果上有差異存在在網際網路個別學習環境中，內控組的學習成效顯著優於外控組。即在網際網路學習環境中，採用個別學習策略，具外控取向特質的學習者，學習成效不佳；而具內控取向特質的學習者，有較佳的學習成效。 三、在網路學習環境中，不同認知風格的學生在合作學習效果上未有顯著差異存在在網際網路合作學習環境中，內控合作組、外控合作組、及內外控混合合作組的學習成效無顯著差異。研究顯示透過合作學習可提升外控取向學習者的學習成效，淡化認知風格對學習者的影響。 四、 網際網路合作學習互動歷程為個人建構、群體澄清、知識重構、群體重構的認知改變模式在網際網路合作學習互動歷程中，個人先形成自我的知識概念，並將個人建構的基模公開呈現與他人分享，當個體的認知概念間產生差異時，合作群體間即產生質疑，並提出澄清，經澄清後合作群體彼此協商，重構知識、統合意見並產生共識，即成為合作小組的認知概念。 五、 同儕模式的網際網路合作學習方式缺少高支持性鷹架結構以同儕為基礎的網際網路合作學習環境中，因學生的先備知識不足及溝通技巧的缺乏，容易產生錯誤概念的學習及習得片斷的知識。是以，針對年齡小或能力低的學習者所設計的網際網路合作學習課程，教師的參與討論與互動是必要的，以能提供學習者高支持性鷹架結構。 六、 在網際網路合作學習環境的互動歷程中，外控取向學習者佈題的行為多於內控取向學習者研究中發現外控取向學習者佈題的行為多於內控取向學習者，內控取向學習者解題的行為多於外控取向學習者。 根據研究結果，本研究提出下列建議，以供教學者、教學媒體設計者、教育行政單位、及後續研究者之參考： 一、應整合學科專家、教育專家、電腦網路程式設計師、美術專業人士以研發更符合學習者需求的網路課程。 二、宜針對學習者特性提供不同的網路教學策略，使建構的網際網路課程更符合學習者的需求。 三、在網際網路合作學習環境中，課程設計應以討論情境、分享知識、及解決問題為主，始能提升合作成效。 四、宜訂定網路界面設計標準及評鑑指標，以做為網路課程發展的依據。 五、在網際網路合作學習環境中，教師應適度參與學生的討論活動，提供鷹架支持的功能。 六、應加強國家整體網路基礎建設，使能改善網路教學品質，提高學習成效。 / The Purpose of this study is threefold.　One is to explore how to design a quadratic function internet curriculum in the internet computer-based collaborative learning environment, based on constructivism. Second, learning effects of different learning styles and cognitive styles in the internet collaborative learning context are analyzed through empirical research methods. Third, the students' cognitive modes and other relative factors in the collaborative learning interaction process, as well as the students' frequent error types in learning quadratic functions, are identified and analyzed through qualitative research methods. The research methods adopted in this study include the development of learning software, empirical research methods, questionnaires, interviews, and content analysis. The researcher first developed and assessed the "internet curriculum of quadratic functions", and selected 60 second graders of a junior high school as research subjects, according to the students' learning and cognitive styles, and categorizing them into the group of internal locus of control with individual learning, the group of external locus of control with individual learning, the group of internal locus of control collaborative learning, the group of external locus of control with collaborative learning, and the group of mixing internal-external locus of control with collaborative learning to implement teaching experiments. After the experiments were finished, the research conducted a written test, questionnaire surveys, and interviews. Besides, the students' dialogue data on Bulletin Board System was collected and analyzed. Based on the analysis results of this study, the main conclusionsare as follows: 1. Internet collaborative learning environment facilitates students learning the concepts of quadratic functions. In the environment of the internet collaborative learning, interactive web pages provide visualized collaborative learning context, assist learners to transform algebraic representation into geometric representation, and give learners opportunities to compare and rethink in different conditions about the relations of algebra and geometry in quadratic functions.　All of which have been proved to have concrete learning effects. 2. In the environment of the internet learning, individual learning effect differences exist among students of different cognitive learning styles. In the environment of the internet individual learning, learning effects of the external control group are better than those of the internal control group. In other words, learners with external locus of control, using individual learning strategies do not have good learning effects.　However, learners with internal locus of control have better learning effects. 3. In the environment of the internet learning, there is no significant differences among students with different cognitive styles. In the environment of the internet collaborative learning, the learning effects among the group of internal locus of control collaborative learning, the group of external locus of control with collaborative learning, and the group of mixing internal-external locus of control with collaborative learning show no significant differences.　This study shows collaborative learning help improve the learning effects of learners with external locus of control, and ease the impacts of cognitive styles on learners. 4. The interaction process of the internet collaborative learning is a cognitive revolution of individual construction, group clarification, knowledge reconstruction, and group reconstruction. In the interaction process of the internet collaborative learning, individuals form self knowledge concepts, and shares their self-constructed sckema with other people. When individual cognitive differences occur, there will be questioning, clarifying, negotiating, reconstructing the knowledge, integratingopinions, and reaching common agreements, which will become the cognitive concepts of the collaborative group. 5. Peer collaborative learning on the internet lacks highly-supportive scaffolding structures. In the context of peer collaborative internet learning, it is easy for students to learn incorrect concepts and incomplete knowledge content, owning to their insufficient prior knowledge and communication skills. Therefore, in designing the internet collaborative learning curriculum for young or incompetent learners, it is a must to involve the teachers to join the discussion and interaction, in order to provide learners highly-supportive scaffolding structures. 6. In the interaction process of the internet collaborative learning, learners with external locus of control have more problem posing behaviors than those with internal locus of control. The study finds that learners with external locus of control have more problem posing behaviors than those with internal locus of control. On the other hand, learners with internal locus of control have more problem solving behaviors than those with external locus of control. Based on the research results, this study proposes the following suggestion for the reference of teachers, educational media designers, education admonitions, and future researchers: 1. Discipline experts, education experts, internet engineers, computer programmers, art designers should cooperate to develop the internet curricula which meet learners' needs more perfectly. 2. Different internet teaching strategies should be provided based on learners' characteristics, in order to make the constructed internet curricula meet learners' needs more perfectly. 3. In the environment of internet collaborative learning, syllabus design should be mainly on discussing situations, sharing knowledge, and solving problems, in order to facilitate collaboration effects. 4. It is better to set the internet interface design standards and evaluation indexes to provide a basis for the internet curricular development. 5. In the environment of the internet collaborative learning, teachers should attend students' discussions when needed, functioning as scaffolding support. 6. National Information Infrastructure should be improved to have higher internet learning quality and thus to enhance learning effects.