This years Quilters Trek theme is Pop of Color. We we decided to do black and white Log Cabin Blocks with a pop of color in there. 4 blocks will make a 9 square, 4 sets with a small border will make the 9 x 36 row, or the 18 inch square. You can put 4 blocks together to make a 9 inch square and spread them through out your quilt. This years blocks are super versatile. We used the Creative Grids Log Cabin Trim tool to make the blocks. You don't have to use it, but it makes them super easy and extremely accurate. I absolutely love their line of Log Cabin Trim Tools and its the ruler we use to teach our beginners class. This kit includes the ruler.