worksheet-coach
Built at Meta Global AI Developer Hackathon · Oct 26, 2026 · Remote

worksheet-coach is a multi-step agent for adults helping with math: parents, tutors, teachers, and adult learners (GED, ASVAB, nursing dosage, trades math). Take a photo of a finished worksheet. A wrong answer on its own says little: "47 + 38 = 75" and "59 + 36 = 85" are one habit, the ten never carried. The agent grades every problem with evidence the adult can check, finds the single habit that reproduces every wrong answer, and writes a short practice sheet where that habit gives a visibly wrong answer, with an answer key it checks before anything is printed. Not twenty more problems: the five that matter. On a 30-sheet test set with handwriting and phone photos it split every sheet correctly, got 184 of 184 verdicts right, and named the planted habit on 29 of 30 sheets. The repo runs without an API key: eight saved runs replay every step. Built entirely during the event; it is for adults (18+) and is a helper, not a grade.