Unlike Esa Helttula's other apps, which allow kids to practice specific skills through a no-nonsense kind of interface, Esa's latest app, for the iPad, gives kids a playground of sorts to play around ...

Subtraction is a fundamental math skill that kids learn early in their academic journey. While it's a crucial building block for more complex arithmetic, the process of "taking away" can sometimes ...

The film follows Billy Thompson, who wants to buy a new ball but first needs to purchase paints and a bat, totaling 194 pennies. He has 223 pennies and learns to subtract to determine how much money ...