Every ESSD40 classroom is equipped with a multimedia system for audio-visual displays and presentations. This year Apple TV's have been added to all classrooms.
A guide to all the components to each classroom system has been created on this Technology blog to help staff understand the systems, operate the components, and troubleshoot minor problems that arise.
The page is called Classroom Multimedia and a link is shown on each blog post window. Here is a direct link as well.
Check the Classroom Multimedia page periodically especially the troubleshooting section. Updates and additional information will be added over the next few weeks.