Some staff have reported issues displaying presentations properly in lecture theatres. Many of these issues are caused by the existence of something called ‘Presenter View’ in PowerPoint which essentially splits the regular one-screen desktop into two, one of which is shown to the presenter on the PC in front of you on the desk in the lecture theatre (with slide notes and a preview of the forthcoming slide), the other of which is shown to the students on the projected screen behind you. This has implications for things like browser windows opening (and displaying fine to you but not being seen by the students) and Camtasia Relay recording the presenter view rather than the full slides. This video will hopefully explain what’s going on. Sorry it’s not super high quality, it’s been done on a mobile phone and is subject to me putting my fingers over the microphone a bit halfway through. So it’s not going to win any Oscars for Film Production, but it might help you show web sites and record your presentation appropriately.