To develop skills in decimals, fractions and percentages. This is an iPhone app but should work OK on the iPad. Students have to place the fraction etc onto the correct place on a number line and has a very nice gear type interface.
Move the iPad to bounce a ball to mark a given fraction. Uses the qualities of the iPad beautifully and also lets kids “game up” through the levels to morer complex fractions.
Cute game to move the frog across a game board by matching fractions and decimals