Money As You Grow is a great, FREE website that is focused on students from ages 3 to 18+.  This site gives great information on how to save money, along with some activities that students can do.  As you click on each age group, an interactive timeline shows a financial milestone.  FREE posters about each age group can be downloaded and printed as you wish.  I encourage you to check out the Money As You Grow site and see if this could benefit your classroom.