Show HN: Lathoa, a math app for kids where the AI is wrong on purpose
A developer has created 'Lathoa,' an educational math app for children that uses AI to generate incorrect steps in math problems. The goal is to teach critical thinking by having students identify and explain the errors.
Why it matters
This demonstrates a creative application of LLMs in education, focusing on error analysis rather than just content generation.
I made this for kids around 10 to 14. A robot called Errol solves a math problem step by step and one of the steps is wrong. The kid has to find it and say what's wrong with it. Sometimes nothing is wrong, so just saying "there's a mistake" every time doesn't work. The user needs to enter an explanation if she finds an error to gain more XP; speed matters also for more points. There is no direct interaction or chatting with an LLM. Lathoa's harness is stable and has many evaluation steps to catch inconsistencies and prompt injections. You can play one on the homepage without signing up. The part that surprised me: it's hard to get an LLM to be wrong on purpose.
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