Counting money is an important skill that not only provides real world knowledge and skills, but also reinforces other math skills.
First select your helper. This person will help you count money. The helper will tell you how much money you need to place on the desk.
Using your mouse, drag coins onto the desk until you have the right amount. When you have the correct amount of change on the counter, click on your helper. s/he will tell you if you are right or wrong.