D.R.
Hi K.
we have 4 children and we use a "earning" system.
you need to find what each child loves the most as every child is different. I made coupons on the computer and each chore they do they earn 15 minuets of thier favorite , my son its video games, and my oldest daughter is tv time. for my little girls its play makeup or paint thier nails. like I said it depends on the childs interest. mine are younger than yours but I bet you will figure something out, it could each coupon earning time at a friends house. etc..
these coupons have really seemed to work , if they dont do chores they dont get extras.