1. To teach the use identification of specific coins it is more useful to teach in the context of actually using the coins. Try setting up a little store of items for your child to buy from you and ask him to give you the correct amount of money. Roleplay, guidance and verbal instructions can be used if he does not immediately hand you the correct coins. The items in the store can be reinforcers or other reinforcers can be given when he does correctly give you the amount of money for the item after a verbal instruction asking which item he wants to buy.
2. Flash cards are a good technique but usually this is not as effective in generalizing to the real world as actually practicing the skills. However, flashcards with coins or pictures of coins might be used to show the child which coins should be used.
3. Roleplaying situations and how much money is needed for items can even be done verbally while driving or waiting at a doctors' office.
4. When you go somewhere practicing buying items is invaluable. Have your child pay for the item. Give him a wallet and some money and when you arrive practice ordering, paying, getting change and thanking the person selling the food.
5. Finally, try a variety of places to buy things such as stores, restaurants or even vending machines in order to generalize the money skills to other areas of life.
Money is a basic skill in life your child needs to function. Teaching these skills through role play, verbal prompts, physical assistance, using visual aides and real -life situations to practice the skills will result in faster and more effectie teaching of this new skill!