需求高度時間彈性、學習時數低的華語成年學習者漸增，對混成遠距教學的需求增加，然而網路科技輔助的工具繁多，功能多樣而混雜。本研究蒐集各種科技輔助數位教學工具，運用其平台的多媒體、計時、評分、社群互動、角色對話、語音識別等功能，針對這類學習時數少、高度需求時間彈性的華語學習者，創造出高互動性的非同步學習活動，以提升學生動機、趣味及溝通意願，與同步教學相輔相成。並以ADDIE模式，進行教學實驗，透過觀察、訪談、課程錄影以及測驗，分析此教學設計模式及活動的學習體驗，並總結最能有效鼓勵學習動機的遠距教學模式設計。 本研究結果發現，在非同步學習活動設計中，若能提升學生的自主學習願望、細部經營遠距的人際互動方式，並關注回饋機制的設計，並運用同步課程在科技問題、學習內容上輔助非同步的學習活動，如此能有效調動學習者的學習動機。提升自主學習願望的方式包含運用競爭心理、社交願望，並透過資源整合增加學生感知的活動學習效率。在遠距人際互動方面，需仔細經營互動氣氛，提供恰當的工具，在回饋機制的設計上，關注獎勵的間隔時間、及回饋的即時性。 / There are more and more adult learners who require time flexibility for Mandarin learning. The demand for distant learning has increased. There are various online technological tools to assist learning, however, the features on the various websites are often disorganized. This study collects different kinds of technology assisted digital learning websites, and applies their features - such as multimedia players, timers, scoring systems, social interaction, role playing, and speech recognition - into Mandarin teaching. It is designed for adult learners who have fewer learning hours and require time flexibility to learn Mandarin. It aims to create asynchronous learning activities, with high interaction, in order to increase students’ motivation, interest, and communication willingness along with synchronous lessons. It applies the ADDIE model for systematic instructional design and concludes with the most efficient distance lesson model that could best encourage students’ motivation. It draws conclusions from the students’ interview about their learning experience, the teacher’s observations during the lessons, and from the recordings of the experimental lessons. The study result reveals the keys to foster motivation in distance Mandarin lessons: raising learner autonomy, undertaking distant social interaction, focusing on the design of a feedback mechanism, and utilizing synchronous lessons to help solve their learning or technical problems during asynchronous self-learning time. Making good use of students’ tendency for competition, willingness to socialize, and increasing the students’ awareness of learning efficiency, effectively fosters motivation for self-learning in distance Mandarin lessons.