How to manage own money

Kaitlyn are too demanding now, she want to buy many many things and expect we can buy for her. Hubby worry her do not know how to manage her financial when she grow up, so he suggest to give Kaitlyn 10 cent everyday and ask her to keep it (with a record book) so next time if she want to buy something, she need to use her own money. I think this is good idea so that not like mama always over spend.