It is becoming increasingly difficult to show our kids the value of money. Money is more confusing than it used to be. Kids see the exchange of plastic or numbers being typed onto a screen and it can be misleading.
Kids see paper and coins from time to time but not very often. They are taught at school that 2 quarters and a dime is sixty cents or that 2 tens make a twenty but with so many transactions being conducted digitally, the relative value is lost.
Parents need make sure kids understand what things cost and the easiest way is to put it in relative terms. This iPad cost the same as 600 songs or games on iTunes, a new game every day for a year and a half, wow, you will be 9 years old by then!
Older kids can be taught real world lessons. Let them pay for their cell phone out of an allowance or from money they have earned. Let them fail occasionally at managing money too because it's better to learn a hard lesson as a teenager than as an adult!