[摘要]  偶發性科學活動指在教師完全沒有計劃的情況下，在幼兒的周圍世界中，突然發生的某一自然科學現象自然物或有趣新奇的科技產品和情景，引發了幼兒的好奇心，從而產生濃厚的觀察和探究興趣，隨即自發投入的一種科學探究活動。它能夠滿足幼兒的好奇心，拓展幼兒學科學的空間、時間及學習內容范圍，培養幼兒對周圍世界的關注，做學習的主人，還有利于具有科學潛能的幼兒的進一步發展。 

   本文通過觀察與訪談了解幼兒園偶發性科學活動的現狀，并通過原因分析了解其影響因素主要有幼兒的好奇心，教師與幼兒的觀察能力，豐富的環境，教師的態度及引導。最后結合文獻提出若干實現偶發性科學活動的方法，包括教師需要豐富的知識，善于觀察的能力，端正的態度，以及善于引導的方法。

[關鍵詞]  幼兒科學教育；  偶發性科學活動；  教育價值；  實現方法；

[Abstract] Abiogenesis sci-activity means a scientific research activity caused by children’s curiosity and rich interest of observation and survey that initiated by an interesting phenomena or thing surrounded. It can satisfy children’s curiosity, expand the space, time and content for them to learn the science; also, it cultivates their attention to the surrounding and to master the learning, thus to make for further improvement for children with potential. 

  By observing and interviewing, this article talks about current situation of children’s abiogenesis sci-activity, and learns that the effect comes from children’s curiosity, observation of teacher and children’s,rich environment ,teacher’s attitudes and how to guide. Lastly, with document, the article figures out several ways to realize this activity. Including the teacher need knowledge,good observing,the right attitude and master boot.

[Key words] children’s scientific education; abiogenesis sci-activity; education value; implementation method