Money Matching
I am not a big fan of worksheets, but some kids really love them. This site has several nice ones that you can print and make available for children who want to work on them. Some may be too sophisticated for preschool-aged children, but others might be just right.
Take a stroll through the site and see if there are any that might be appropriate for your group. If you are studying money this month, these sheets will reinforce the concepts.