AARPSKIER wrote a great manual for sailing for kids years ago. Search here on TTOL and find the threads, or click the link below.
I’ve kept a link with the hope I can use with my grandkids someday

Here’s the link to the Dropbox with word and pdf versions. Still active
https://www.dropbox.com/sh/5t4ouuqxfsk6tw4/AACcWHvT51EQ9o-1MbS75mfHa

Sailkids