This PowerPoint is set up for six centers. I use it over the course of two days but it could easily be set up for all six centers in one day.
I run three 20 minute stations two days a week. I project this PowerPoint on my Interactive white board, and I designate my student helper to tap the board when it is time to switch. Each slide highlights a new number above the names of the group members so they can find out where they go next. Every student knows where they should be going and what they should bring!
It is easily editable from week to week as the skills, groups, and adult assistance change.