I started in 4-H and had a fabulous mentor. We learned to sew a straight line by unthreading the machine and sewing on lined writing paper. My first project was a triangle pin cushion with an elastic wrist band. I think I still have it somewhere. The next project was an apron. While everyone else was starting in Home Ec I was advanced enough I made a wool coat that had a zipper to shorten and lengthen it.
We also learned about decorating, color wheel, keeping a neat work area (wonder where that went during the years. lol)
Most of all, have oodles of fun. It sounds great. Take lots of pictures and make a scrapbook. I like the generational cooking idea. I'm sure everyone will have input on making and baking.