本研究旨在對不同先備知識程度的學習者，運用不同的學習導引與練習策略來進行電晶體直流偏壓之網路學習成效探討。本研究對象為高級職業學校電機電子群學生，研究樣本來自台北市某私立職業學校資訊科及綜合高中部資訊學程的三年級學生，這些樣本皆已修習過「基本電學」基礎專業課程，具備一定程度的電學知識。
學習導引依照導引設計方式不同分成動態迴路引導及循序迴路引導兩種方式，練習策略依照學習順序不同分成漸進式及整合式兩種類型，先備知識的評定是依據前測總分將學習者分成高、低兩組。依變項包含學習成效、學習態度及學習網站使用滿意度。
研究結果發現：(1)高先備知識者在進行「電晶體直流偏壓」網路學習活動，能獲得較佳的學習成效；(2)動態迴路引導及循序迴路引導兩者在進行「電晶體直流偏壓」網路學習活動時，都能有效地提升理解成效及解題成效；(3)學習者經由學習導引及練習後在習作與後測成績表現一樣好；(4)透過互動式多媒體動畫導引來進行網路化學習，學習者的學習態度轉為正面；(5)符合課程及適合學習者程度的學習單可以有效地幫助學習者進行網路化學習，進而提升學習成效。

關鍵詞：學習導引、練習策略、網路化學習

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