when you have it laid on the floor, try labeling each block by row and column..,,. perhaps the first block in the top row is A1, the first block in the next row could be B1. and so on. then you can move them to your sewing area and your son's floor will be clear. oh, and put each number at the top of the block... that way, you can hold it by that top and have the right orientation of the block