Math Apps and Games for Number Sense
    and Flexibility

    Refraction focuses on teaching fractions and discovering
    optimal learning pathways for math education.  
    Mathbreakers lets you play math while exploring a 3-D virtual
    world, filled with number creatures and mathematical
    DragonBox teaches you algebra through visuals.  You solve for x
    and have fun doing it.
    WuzzitTrouble in this app you have to release the creature
    from jail by turning gears.  It helps you develop number
    flexibility by using addition, subtraction, factors,
    multiplication and other mathematical concepts.