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6/10

Problem Forge

A tool for math instructors and TAs that generates fresh practice problems at any difficulty level, with worked solutions and rubric-ready grading — saving hours of question-writing each week.

Target user

math instructors, graduate TAs, and homeschool parents who need a steady supply of fresh practice problems and variations

Features
  • Topic + difficulty selector (e.g., "intro group theory, medium") returns a fresh problem
  • Multiple variants per request so students cannot copy from each other
  • Auto-generated rubric and worked solution for grader use
  • Export to LaTeX, Canvas, or printable PDF for problem sets
Why now

the same Tao paper highlights that AI-generated problems are now viable — but instructors still don't have a purpose-built tool that's better than ad-hoc ChatGPT prompts

Signals · overall 6/10
Demand
6/10

instructors spend hours weekly writing variations; the same HN-engaged math audience would adopt quickly

Whitespace
5/10

Quizlet and textbook question banks are static; no tool turns a topic and difficulty into a fresh problem

Monetization
6/10

per-seat or per-department institutional pricing; hobbyist $10/mo tier

Longevity
9/10

problem-generation need is permanent across every math course and grade level

Feasibility
6/10

LLM problem generation with LaTeX export is buildable; rubric generation is a known pattern

Terence Tao: Mathematics in the Age of AI [pdf] · 38 points · 14 commentsHacker News · 2026-07-26 (today)