If you have ever thought about having a mock "general store" or any kind of shopping experience in your classroom...do it!!!! It takes a bit of time to initially set up, but the rewards with the children are worth it. We gathered old boxes/containers/jugs of REAL groceries and priced them with stickers. We had children take turns shopping with lists (they had a set amount of money to spend, so they could not go over) and a peer was the cashier to "cash them out." I bought them all wallets and at first gave them play money to use to identify Canadian bills up to $20 and all Canadian coins. Once they got to the "cash" the peer rang them in and told them their total. They had to pull out the required money to pay the cashier. All of this practice and reinforcement really helped when we would have our real shopping experience at a local grocery store.