“ninth grader Gao Yilin sat at her desk in a classroom, jotting math formulas into her notebook. But instead of … pencil, she is holding a "smart pen." The tip of the pen has a tiny camera, and the barrel has an embedded pressure sensor. Every stroke she makes -- its shape and pressure -- is captured as data. "The AI analyzes it and immediately tells my teacher how I approached the problem and exactly where I got stuck," Gao said.” https://asia.nikkei.com/business/education/homegrown-ai-powers-china-s-ambitions-from-classroom-to-home