Here is a fun activity book that can be put together for the kids to practice the dollar-up method. My kids actually got pretty good with this last year. Since we work on money weekly, I always throw in a few minutes of dollar-up practice at the end. The majority of my kids really struggle with coins, and this method has proven to be very helpful for them. This activity book can be put together in about an hour. It has ten activity pages where the students will Velcro the correct dollar amount showing how much they would need to pay for each purchase.