Learn math with BORIOL! This game shows numbers, operations , polygons , ... with a nice interface . It is based on the curriculum of fifth grade . Common Core math. Easy to play . You have the option of unlimited play . You can see your progress step by step . Suitable for 8, 9, 10, 11 years. You can play without internet connection. Users: - Fifth graders (4th graders or 6th graders, too) - Parents for daily homework - Teachers in the classroom - Homeschoolers Privacy Disclosure: As parents ourselves, BORIOL takes privacy very seriously. Our app: - Does not contain links to social networks - Does not collect personal data But yes, it does contain advertising as that’s our means of providing the app free of cost to you – the ads are carefully placed such that the user is least likely to click on it while playing.