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Through multimedia delivery of new materials, web-based warm-up exercises and interactive classroom teaching/learning, this paper presents an effective approach - PETL (Preview, Exercise, Teaching and Learning) in teaching and learning digital electronics. The proposed pedagogy is a teaching and learning strategy based on the active participation of learners at each stage of the learning process, namely, preview of new topics, Web-based warm-up assignments, and interactive classroom teaching and learning. Students briefly preview the new materials delivered through Web-based multimedia, and then respond electronically to carefully constructed warm-up exercises which are due before class. The instructor reviews studentspsila responses and adjusts the classroom lesson based on studentspsila concerns and questions. The preview materials, with the instructorpsilas explanations added, are produced using Flash multimedia authoring tool. This provides an online learning tool to prepare the students for the warm-up exercises. Anonymous surveys, questionnaires before, in the middle and after the implementation of the project are conducted to assess the effectiveness and outcomes of this project.