The document discusses using audience response systems (ARS) to enhance interaction and feedback in large mass education lectures. ARS allow students to provide real-time feedback and responses through voting systems with text or multiple choice options. While students find ARS easy to use and engaging, it can be difficult for teachers to follow student discussions on a secondary screen. Effective use of ARS requires solid educational planning from teachers and preparation of discussion questions ahead of time. Overall, ARS have potential to improve interaction, but implementing them well poses challenges for instructors.