It's a shame that the new Girl Scout badge sets discontinued the Sewing badges. But here is a place to put some tips, tricks, and resources for scouts to learn to sew, knit, crochet, and other "legacy" crafts.
Here's a fun rhyme for kids use when learning to knit that I heard from someone on the Playschool listserv:
Go under the fence,
Grab the sheep,
Back under the fence,
and off we leap.