I started a checking account in my class for each student. It is a great way to reinforce good behaviors and it also teaches them about money and writing checks. I will randomly pass out money to students doing the right thing. They then have to put it into their checking account which they always have. They must then add the money up and have a balance ready. When I check their work I intial it. Every week, I have a store where they can buy items by writing a check to me. They then have to subtract it from their account. I am also planning on have theming figure up interest and taxes to add more math to it.