I've started on a couple of sundresses for my girls (3.5 and nearly 6). The elder one watched me with big eyes as I unfolded the pattern tissues for one of them and asked in a small voice "can I help?". I thought for a moment and said "yes you can!".
Elder DD is both very narrow of chest and tall for her age, so I traced off pattern pieces is blended sizes for her, and let her cut them out of the tracing paper with her school scissors. She did a pretty good job.
I also figured she could help with pinning and hand basting. I wouldn't normally hand-baste this sort of thing since it doesn't have sleeves or curved seams, but it certainly doesn't hurt. She could learn to drive a needle "for real" and it really doesn't matter how big and crooked the stitches are.
She didn't catch on quite so fast - I rethreaded her a couple dozen times at least (she did a couple two) but what the heck, it was fun :)
Sew.... at what ages did you teach your kids, and did they learn anything? How old is old enough to start on a sewing machine? I'm thinking "big enough to reach the pedal" at the very least - 8 maybe? How about pressing? I'm a klutz and still burn myself regularly so I'm worried about that.
-Liz