This unit was featured in the Linky Party that studied Debbie Diller's "Math Work Stations". I found it at Michael's and used a 40% off coupon for it! Woo Hoo I love a bargain!
I have small room that doesn't have much storage and always looks very cluttered (ok ... I admit, I'm a messy teacher - organization is my growing edge). I am going to make this my math center. Two children can chose (or be assigned) a drawer that contains a math activity. If you want more ideas start at Mrs. Parker's blog http://learningwithmrsparker.blogspot.com/. She has links to all of the sites that hosted chapters for MWS. Great resource!