This is FREE for TODAY only.  Go get it when you can.  I didn’t get chance to take a close look, but have heard good things about it. Introduction at the App Store: For age 9-12. Marble Math is a fun, engaging way to practice core math concepts that your kids are learning in the classroom.  The object of the game is to solve a variety of math problems by collecting numbers as you roll or drag your marble through a… Read more