This PowerPoint presentation will make your life much easier when executing centers, whether it be for guided reading or just subject reinforcement! The four self-timed, chiming slides change after a set amount of time (I have the default set to 15 minutes for a total of one hour of center time). Just add student names in groups of 4, add each center activity and VOILA! Your centers are ready with the press of a button. Enjoy and Happy Teaching!