The Topic: 

Easier - Money is the coins and paper bills that people use to buy things.
Harder - Governments of a country mint and print different coins and bills as forms of money. This money can then be used to purchase goods and services.
Historically seashells, iron, gold, and silver have all been used for money. Today checks are often used. Anything of value that can be made in a form for exchange can be used as money.
Department of the Treasury
Learn about the U.S. money system, who controls it, how money is made, and how the U.S. Treasury works. Note:
This site is hard to access, keep trying. Or go directly to these other sections:
This area is the Treasury educational links page. It connects you to several different kids sections.
Kid's Money
Site lists the top-ten money principles for kids, and includes resources,surveys, and links to other money sites.
This place was designed for sixth to eighth graders to develop their math and financial planning skills.
Secrets of Making Money (Nova Online)
Learn and test your knowledge about the U.S. dollar. Find a bogus bill in the counterfeit bill game.
After exploring several of the money sites below, complete one or more of the following activities:
Improve Your Money Skills. Visit Money Flashcards and practice adding up different coins and bills.
Play a Money Game. Visit Big Money Adventure and make a choice from the following game levels: 
'Rainbow Castle' (age 2-6) - Counting money
'Storybook Adventure' (age 6-10) - Investing
'Startraders' (ages 10-adult) - Pick stocks
Or visit Escape From Knab and take off on an adventure to the strange and slimy planet of Knab (ka-nab). Make the right money choices; find out if you know enough about money and investing to earn your way back home.
Design and Create Your Own Money. Pretend that you are starting up a new country and your job is to design and make a new, unique money system. What materials would you use; paper, plastic, or what? What images and symbols would you use? How would you prevent counterfeiting? For additional help visit Counterfeit Currency.
Complete a Money Webquest. Take your pick completing one or more of the following webquests: 
1) Buehler WebQuest (Stockmarket, Grade 9-12)
2) Investing for the Future
3) Learning about the Stock Market
4) Money, Money, Money (Currency conversion)
5) Mutual Funds Making Your Millions
6) Show Me the Money (Investing money wisely)
7) Show Me the Money (Grade 12)
8) You Can Buy Anything You Want!! (Economics, high school)
9) Your First Paycheck Has Finally Arrived! Decisions.. (High School)
Personal Earnings and Investment Plan. After visiting sites like Kid's Consumer Corner, Kid's Money, and Moneyopolis, put together a realistic plan of your income and how you will spend and invest for the next five years. Consider all aspects such as your allowance, part-time jobs, and all other sources of income. Make good decisions for your spending, savings, and investment. Save your plan. Evaluate and revise your plan in 6 months.
Website By Kids For Kids
Kid's Consumer Corner
Explore this 1998 ThinkQuest Junior award-winning site. Learn how to save successfully, pick out smart buys from the bad ones, and how to earn money.
More Money Sites
Dollars and Cents: Fundamental Facts About Money
This website has basic information about U.S. currency and coin; how they are made, their design and features, how they are circulated, and how to spot counterfeit bills.
History of Money from Ancient Times to Present Day
Here you can study the history of money. Site includes a timeline and several essays.
Related Websites:
2) American Currency Exhibit
3) Brief History of Our Nation's Paper Money
This place was designed for sixth to eighth graders to develop their math and financial planning skills.
Money Theme
This website contains a number of different types of money activities for kids.
Our Money at Woodrow Federal Reserve Bank of Minneapolis
Here you can investigate the faces of U.S. currency, counterfeit protection, new designs, and the history of money.
United States Mint
Find out what's going on at the mint, where coins are made. Visit H.I.P. Pocket Change to learn about coin collecting, the history of money, and play money games.
Universal Currency Converter
This site contains currency information for 180 currencies in over 250 geographical locations.
Which Pennies Are Still in Circulation? (Grade 2-4)
In this activity, individuals or small groups gather and analyze samples of 100 pennies that are presently in circulation around the United States.
Young Investor
Here is a place to learn about money and maybe even earn some too; pick a button, choose a guide, and go to it!
Websites For Teachers
Bank at School Lesson Plans from the Illinois State Treasuer's Office
This is a collection of ten lesson plans about money and finance.
Change for a Dollar?
Did you know that there are 293 different ways to make change for a dollar? The answers are all on this page. This is a fun (if somewhat time consuming) exercise for counting money - - maybe as a group problem solving assignment.
Currency Exchange and the Gang of Fifteen by Eric Enholm (Grade 4-10)
One of the many challenges of traveling in foreign countries is trying to determine how much things actually cost in U.S. dollars, even though we are using local currency.
Exact Change Please (Grade 2-3) at Electronic Learning MarketPlace
A cash register, a drawer full of money, and lots of empty food boxes engage second grade learners in adding two-digit numbers and counting money.
Fun With Estimation (Grade 3-5) by Mark Whitener
Using empty packaging from the grocery store, play this simulation game with your students to sharpen estimation skills with or without decimal numbers.
Goods and Services at YEA
This is a A lesson plan about spending money that uses a game as a simulation; a game involving how we spend our money. .
Money Units
Here is a number of lesson plans on money.
Multicultural Money Systems
The objective of this lesson is to compare money systems with wampum, pieces of eight and beads in Africa. 
monetary system
paper money
dollar bill
silver dollar
Susan B. Anthony dollar
currency conversion
coin collecting
'pocket change'
money clip
money belt
banking account
goods & services
Created by Annette Lamb and Larry Johnson, 1/99, % Updated, 4/00. Updated by Nancy Smith, 4/02