Phone-based Audience Response System as an Adjunct in Orthodontic Teaching of Undergraduate Dental Students

In the lecture hall, G1 was separated from G2, and both groups completed an assessment of written multiple-choice questions (MCQs) scored out of 20, before the lecture. During L1, phone based (ARS) questions (PB-ARS) secretly displayed on the smart phones of the students in G1, and they were allowed to read the question and answer it, while those in parallel arm of the trial (G2) were blinded to those questions and answers. At the end of L1, both groups completed the same written MCQs assessment