MathTrail

MathTrail gives a child in grades 1 to 6 olympiad-style maths tasks in a lesson a parent or tutor runs in the chat. The chat's model writes each task; MathTrail picks its topic and difficulty from the child's answers, checks it with a program before the child sees it, and shows it on a card with five options. A wrong answer is explained from the mistake behind it, and the child's progress, under a pseudonym, is kept in one file in the parent's Google Drive.