There is an expectation that students can increasingly interact with materials, educators and their peers. A student response system (SRS), also know as instant feedback system, student voting or polling, is a tool that facilitates a rich learning environment within the traditional lecture theatre setting.
I’ve looked through some of the published literature and developed a presentation to highlight some of the advantages of using it for the learner, with some case studies to give a flavour of how it has been used by some instructors.
(Clicking on the image will take you to the slidecast. Click to start the presentation, which will automatically scroll through the slides. Video and audio are embedded in the presentation.)

[...] there are tools that can provide a lecturer with feedback during a lecture, the student response system being one example. However, that has to be pre-planned prior to the lecture to be used effectively, [...]