I love a math app that covers all four operations found in an elementary school – addition, subtraction, multiplication, and division. But I especially love one that unlocks higher levels as students master lower levels. This app is definitely worth downloading. Users have to help a cute little chicken cross a stream. They maneuver a raft on a number line that corresponds to the correct answer to the math fact they’re given. After getting so many correct, they master that level and can proceed to another one. The app is simple – meaning it doesn’t have too many bells and whistles – but it’s a solid choice to have installed.