This lace stitch used in this scarf, called the four-spot, came from the book The Essential Stitch Collection by Leslie Stanfield and Melody Griffiths
This pattern is sized for small children: 5 × 36 inches (125 × 915 mm). You can easily size it up for older children or adults. Just be sure that any additional stitches you add in are the right multiple for the pattern: 6 + 9 (see pattern notes for details). You may find the pattern on the Windy blog.
I am not crazy about knitting lace in general. I liked this one because it reminds me of eyelet. Also, the pattern is simple enough that once you have done a few rows you don't have to concentrate on it too, too much. Also, one really nice feature of lace is that it knits up very quickly because of the holes as they open up.
To do this pattern, you will need to know how to:
yo (you can find a continental version at the same site)