Brazilian public and private schools are invited to register students (grades 2-5) for the Children's Mathematics Olympiad (Obmep Mirim) by June 8th, with registration free for public schools. The competition features two phases with tests in August and November, offering digital certificates to winners and aiming to foster mathematical curiosity through game-based learning approaches. The initiative, supported by major Brazilian government agencies and educational institutions, has engaged over 15 million children since its 2022 launch.