This section is from the "Hand Sewing Lessons" book, by Sarah Ewell Krolik. Also available from Amazon: Hand Sewing Lessons: A Graded Course For Schools And For The Home.
Two pieces of striped gingham or calico, 2x4 inches. The stripes should cross the pieces, be equi-distant from each end, and be joined to match. Follow directions of Model 2 (Overhanding) for overhanding.