When I was a Girl Scout leader, it was 5th grade and 6th grade girls. None of them knew how to sew. So we had to start with how to thread a needle and went from there, they all used the same pattern, but had different fabric. We made tote bags to give to their mom or grandmother. They were not ready to learn quilting. So hopefully you girls are better prepared than mine were. (I learned to sew when I was 8 years and thought every one was. Surprise!)
We did have great fun - so hopefully your girls will too.