On those bookshelves are levelized math games. These games coordinate with what we are learning, and as I stated, are levelized based upon their math groups.
These are where I place the students' names for their groups. As I stated, I levelize my groups based upon the students' knowledge of the concept we are teaching. The color of the ribbon holding up the tray matches the buckets in the math games' library so the students are playing games that are appropriate for their level.
I found the idea from Kristen over at Ladybug's Teacher Files. Each bucket color is levelized according to ability level...AND each bucket is labeled according to the concepts as well as bucket number. The games in each bucket will have a tag that is colored the same as the bucket AND has the same number. Needless to say...the kids will HAVE to keep it organized! :)