This is NOT IN ENGLISH...but it does not need to be- just click on the fish with the math operation you want to practice. - tap on the answer, and if it is correct you will be awarded a green shell, if not, it will be red. It is a simple, drill-style math app and I have included it because it is FREE- but ad-based. (There is a tiny unobtrusive ad bar at the bottom of the screen- you can use guided access to draw around it so there are no unexpected clicks outside of the app.