Classroom resposnse systems (CRS) have been used in USA higher education system for a long time. The i-clicker system, as the most common CRS, can be used to take attendence, prepare short quizzes, or determine the viewpoints of students and present it graphically. Detailed information about the system can be found in link 1 and link 2. Besides, information about how i-clickers can effectively be incorporated into a class setting can be found in link 3. Recently, with the advancements in mobile systems such as android and ios, alternative response systems have appeared in the apps market. Information about the most popular apps as alternative response systems can be found in link 4.