This file is an editable powerpoint for centers. The timing on the slides is set to 15 minutes, so that it will rotate automatically. There are also 20 second 'clean up' slides between each station. All of this is editable. It is currently set up for reading stations, but can be used for anything. I love using this because I do not have to say anything or get up, and it is easy to understand for all age levels of students.