This study explored the effects of web-enabled pedagogies on students' involvement in learning. A series of quasi-experiments were conducted to investigate whether students' involvement increases over time if intervened, respectively, by problem-based learning (PBL), self-regulated learning (SRL), and their combinations. Two classes of 102 first-year students at a vocational school in a one-semester course were chosen for this empirical study. The results were generally supportive. The authors further discuss the implications for schools, scholars, and teachers engaged in e-learning. (Contains 3 tables and 2 figures.)