I used the rail fence pattern to teach my 7 yo about the 1/4 seam and making her first quilt. It turned out gorgeous, I made the outside strips of the blocks a little bigger to allow me to cut them down and square them up. She did everything except the rotary cutting. And the pattern was free from quilters cache.
Here is the pic... this is before it was quilted.
Sam's First Quilt
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