I hear those are a waste of money and it is better to just get a real machine and teach them and watch them closely to make sure they are observing safety. Some people have kids younger than that on here sewing on real machines. You just really need to emphasize the safety some kids are better at that than others. When my daughter hits about five I will just give her my cheap brother and teach her to sew on that. I think the kids will enjoy it much better too.