對以英語為外語學習的台灣學生而言，傳統的發音輔助系統在國中階段是以K.K.音標為主，而目前國小階段的發音輔助系統是藉由字母拼讀法，本研究旨在探討字母拼讀法與K.K.音標對台灣六年級學生在單字發音效益比較之研究。 研究對象為台北市一所公立小學六年級二個班共62位學生，兩班隨機分成實驗組與控制組，實驗組施予K.K.音標教學，而控制組則施以字母拼讀法教學。實驗研究共進行一學期，實驗前給予兩組學生單字發音的口試測驗，實驗後再進行同一份口試測驗，並採用三種統計方法進行資料分析:敘述性統計、獨立樣本T 檢定與卡方檢定。資料分析結果顯示K.K.音標與字母拼讀法教學在單字發音上有顯著差異，受試者對於K.K.音標教學在整體單字發音的表現較有成效；在單音節與多音節以及規則與不規則字的發音上也較字母拼讀法教學有成效。此外，二組受試者在子音、母音、重音與音節的錯誤率比較上，僅在母音上呈現顯著差異，受試者輔以字母拼讀法教學在母音的錯誤率較K.K.音標教學高，而錯誤似乎是受到字母拼讀法規則類化的影響。 最後，由此研究結果提出對國小六年級學生在單字發音教學的建議，期盼對國小六年級英語教師與學生在單字發音的教與學上有所助益。 / To facilitate word pronunciation for EFL students in Taiwan, K.K. phonetic symbols have been used in junior high schools for decades whereas phonics has been introduced in elementary schools. The purpose of the study is to examine which method, phonics or K.K. phonetic symbols, is more effective in teaching word pronunciation for sixth graders who have had three years of formal English education at public schools. The participants in this study were two classes of 62 sixth graders in Taipei city. Two classes were randomly assigned to the experimental group who received the instruction of K.K. phonetic symbols for a semester while the control group who received the instruction of phonics. The oral task of students’ production abilities on word pronunciation designed by the researcher was used as the instrument to collect the data. The data collected was analyzed by three statistical methods, including descriptive statistics, independent sample t-test and chi-square. The results showed that students receiving K.K. phonetic symbols instruction outperformed those who received phonics instruction on overall, monosyllabic, polysyllabic, regular and irregular word pronunciation. Additionally, it is found that students with the instruction of phonics made more vowel errors. The segmental errors in the phonics group may result from the effect of phonics generalization. Based on the findings, this study proposes some pedagogical implications for sixth grade English teachers to better facilitate students’ learning on English word pronunciation.