Teaching the subject to an older child may be a bit more difficult. There are many math problems out there that can be used to bring it down to their level. Using this subject in an everyday situation is a one idea. For example, tell a story that involves that child. If he goes to the store and buys a gallon of milk with a five dollar bill and the milk is only three dollars, how much money will he have left? Using word problems will help the child understand it more.
Treat math as exciting _ Use bright objects to explain basic concepts of addition and subtraction. This is the nice thing about math. It opens you up to a world of opportunities. I used my floor tiles to explain the concept of area. Apples and other colorful fruits can be used to demonstrate addition and subtraction easily. Fractions are better understood when they can be visualized so use their regular picture puzzles to explain fractions _ they are pieces of a whole so why not? The same thing applies to pieces of apples and oranges. Flash cards and games also spark interest _ some teachers/parents swear by the math smart card games. Download some of the free math worksheets and resources online; some are very creative. I cannot emphasize this enough. The internet has a wealth of fun math resources.