This study examines the effects of case-based learning on the web using questioning techniques and reflective thinking to develop critical thinking skills in undergraduate students. The study compares two questioning techniques (Socratic vs 5W1H) and two reflective thinking methods (digital storytelling vs essays). Participants were 120 undergraduate students randomly assigned to one of four treatment groups that varied the questioning technique and reflective thinking method used. The study aims to determine which combination of questioning technique and reflective thinking method best improves students' critical thinking. The results could help ensure technology-based instructional strategies effectively develop learners' advanced knowledge and skills.