@panas 第一轮：Make a plan:A friend asked me to use AI to create some add & sub exercises and print it, for ~ 8 year olds(girls).I want to instead create a interactive webapp to do so. Here are some initial thoughts:1. have a rich set of suitable difficulty exercises. Preferably generated each time, but still within a suitable difficulty.2. it's like duolingo, with format of a quiz or virtual numkeyboard input3. a quiz should be reasonably sized. Like 15~20.4. UI has to look cute. attacting to young little girls.5. Have a feedback at the end.(result summary)6. have a explanation panel at the end or mid-quiz(Must be lightweight and easy to understand, can't use read-heavy chunks of texts)7. Deploys to github pages8. can this be pure front-end? No backend involved.9. work well in a landscape tablet device(resolution unknown, not ipad, though ipad definitely should be considered), and phones后面几轮都是加需求，像乘除，三位数难度，多页打印和竖式解读（图形解读是他自己弄的）。不过这第一轮就已经成型了。