In first grade I use a program called classroom economy as a classroom management system as well as a money management system. The students earn money every day for completing their classroom jobs. They also earn money as rewards for walking in the hallway quietly, following directions, and being extra kind to others. At the end of the week, they have to pay rent for their desks and then they can either save their money for bigger prizes or spend it on smaller prizes. They also have the option of buying their desk so they no longer have to pay rent. This is a really fun way to start having a concept of money and how it work.