We do our centers for about 15 minutes each day. My kids work in partners.
I have all the pieces to each center together on a large ring. They are stored in the pocket chart below:
The BEST part about the centers? They come with a booklet that matches the worksheet/sorting page for each center. AMAZING! My kids keep all their work in one booklet for the entire month.
My kids have really enjoyed these centers, and it's been great to watch them master these skills while having fun! I'm not going to lie...putting the centers together took a while, and it was hard work, BUT it has been worth it! (Not to mention I will have them ready to go for next year!)