This page uses Geogebra to demonstrate using an area model to understand adding fractions.
A fraction is a number that describes part of a whole number. Because fractions are numbers just like 5, or 2, or 23, they live on a number line.
When you see a fraction, you need to keep in mind what the two numbers mean. The top number (numerator) represents the number of groups or parts that you can see. The bottom number (denominator) represents the number of groups or parts needed to make one whole.
MVFractionCalculator is now ready for sale. Visit the product page here or go straight to the iTunes Store and buy it! 
MV Fractions now Available!Tue, 08/11/2009  13:56 — dhabecker
MV Fractions iPhone App
