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Show HN: Links – An AI math tutor that analyzes handwritten work
We built a digital blackboard where students solve math problems by hand while an AI assistant analyzes their work in real-time. The AI recognizes patterns in their approach and provides targeted guidance when they're stuck – similar to how a human tutor would work through a problem together with a student. This grew out of a Stanford project after noticing the overabundance of "math" apps that were essentially games with occasional math problems. We wanted to create something that focuses on building actual mathematical thinking. Our approach:
Students write directly on the screen (like paper, but digital) The AI parses their handwriting and solution approach It identifies exactly where they're struggling and offers personalized hints We focus on foundational skills: addition, subtraction, multiplication, division
We've been testing with a small group of children and seeing encouraging results – improved understanding of mathematical concepts rather than just memorization. Technical stack: React, Gemini 2.0 flash for handwriting recognition and solution analysis. Looking for feedback on both the educational approach and technical implementation. First unit is free to try at learnwithlinks.com
Comments URL: https://news.ycombinator.com/item?id=43759921
Points: 1
# Comments: 1
How We optimized MCP servers for serverless (or: From SSE to WebSockets)
Article URL: https://blog.blaxel.ai/how-we-optimized-mcp-servers-for-serverless
Comments URL: https://news.ycombinator.com/item?id=43759918
Points: 1
# Comments: 0
Looking for a Developer Co-Founder for Social App
Hey everyone! I'm currently looking for a developer co-founder to join me on a project I'm really passionate about. It's a social app focused on the dance world—something creative, community-driven, and with global potential. Ideally, you’ve worked on consumer or social apps before and want to build something from the ground up. If this sounds like something you’d be into, feel free to reach out—I’d love to chat
Comments URL: https://news.ycombinator.com/item?id=43759911
Points: 1
# Comments: 0
Scientists confirm vitamin B1 hypothesis from 1958
Article URL: https://phys.org/news/2025-04-scientists-vitamin-b1-hypothesis.html
Comments URL: https://news.ycombinator.com/item?id=43759892
Points: 1
# Comments: 0
A 2025 Survey of Rust GUI Libraries
Article URL: https://www.boringcactus.com/2025/04/13/2025-survey-of-rust-gui-libraries.html
Comments URL: https://news.ycombinator.com/item?id=43759850
Points: 2
# Comments: 0
The primary audience of your thing (product, service, library,) is now an LLM
Article URL: https://twitter.com/karpathy/status/1914494203696177444
Comments URL: https://news.ycombinator.com/item?id=43759835
Points: 2
# Comments: 0
World Economic Forum founder Klaus Schwab steps down from globalist body's board
i can't be the only one that thinks ChatGPT naming is intentional
I'm thinking openai's naming strategy not making sense is intentional. The average person doesn't know the differences between the models. If i wasn't into ai like that, I'd pay for chatgpt+ but use o4 mini high vs o3, just because its an o4 and 4 is better. because why would i want to use a 3. even though the o3 is better and technically makes sure i use my membership to the max. I mean o3 costs them more to run and deliver to members which means using it on my membership gives me more bang for my buck. And even if i did go 4o which is more expensive than o4 mini high it still costs them less than if i went with 03. Anything to make sure you dont use o3. and then 4.5 is noticeably slower, so eventually you don't want to use it and just go back to one of the other 4's. just me?
Comments URL: https://news.ycombinator.com/item?id=43759833
Points: 1
# Comments: 0
It takes one click to join Uber One, and 32 actions to quit
Article URL: https://www.theregister.com/2025/04/22/ftc_sues_uber/
Comments URL: https://news.ycombinator.com/item?id=43759818
Points: 2
# Comments: 0
Codex: Support multiple providers via Responses-Completion transformation
Article URL: https://github.com/openai/codex/pull/247
Comments URL: https://news.ycombinator.com/item?id=43759792
Points: 1
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Meme Battle 2.0 – earn on memes
Article URL: https://meme-battle.com
Comments URL: https://news.ycombinator.com/item?id=43759786
Points: 1
# Comments: 2
Saving My Wrists: A 20-Year Quest for the Perfect Keyboard Setup
Article URL: https://vpetersson.com/2025/04/18/saving-my-wrists-a-20-year-quest-for-the-perfect-keyboard-setup.html
Comments URL: https://news.ycombinator.com/item?id=43759783
Points: 1
# Comments: 0
Haiku Quiz API in Haskell
Article URL: https://haiku.philhrtm.xyz
Comments URL: https://news.ycombinator.com/item?id=43759781
Points: 2
# Comments: 0
NASA's Lucy Spacecraft Images Asteroid Donaldjohanson
Article URL: https://science.nasa.gov/image-article/nasas-lucy-spacecraft-images-asteroid-donaldjohanson/
Comments URL: https://news.ycombinator.com/item?id=43759774
Points: 1
# Comments: 0
Crocheting Bour's Minimal Surfaces [pdf]
Article URL: https://research.tudelft.nl/files/177089953/s00283-023-10314-1.pdf
Comments URL: https://news.ycombinator.com/item?id=43759769
Points: 1
# Comments: 0
Best Internet Providers in Ithaca, New York
Knight Takes Pawn. Chess Lessons Are Coming to Duolingo
USA Unable to Make Drones Without Components from China
Article URL: https://militarnyi.com/en/news/usa-unable-to-make-drones-without-components-from-china/
Comments URL: https://news.ycombinator.com/item?id=43759662
Points: 2
# Comments: 0
Pensacola man stole 171 iPhones while working as UPS employee
Article URL: https://weartv.com/news/local/report-pensacola-man-stole-171-iphones-while-working-as-ups-delivery-driver
Comments URL: https://news.ycombinator.com/item?id=43759661
Points: 1
# Comments: 0
He Was a Prophet of Space Travel. His Ashes Were Found in a Basement
Article URL: https://www.nytimes.com/2025/04/21/nyregion/willy-ley-rocket-ashes.html
Comments URL: https://news.ycombinator.com/item?id=43759622
Points: 2
# Comments: 0