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Bloom's two sigma problem (2020)

https://nintil.com/bloom-sigma
8•Tomte•6mo ago

Comments

trane_project•6mo ago
> Nonetheless, Bloom was on to something: Tutoring and mastery learning do have a degree of experimental support, and fortunately it seems that carefully designed software systems can completely replace the instructional side of traditional teaching, achieving better results, on par with one to one tutoring. However, designing them is a hard endeavour, and there is a motivational component of teachers that may not be as easily replicable purely by software.

I've been working on an implementation of mastery learning and other related techniques called Trane (https://github.com/trane-project/trane/) for the past three years or so. Mastery learning is the main one, but it also integrates spaced repetition, interleaving, mixing difficulties, and reward propagation (doing well or bad in an exercise affects how related exercises are scheduled).

I think it works pretty well, but you need to pair it with proper pedagogy of the skill you want to learn and the proper curriculum. The latter is the hardest part, so it's being my main limitation. I've used some external resources to build courses, and they work well, but obviously it would work much better with a full curriculum built from the ground up.

Currently working on Pictures Are For Babies (https://picturesareforbabies.com/), which is meant to do just that for literacy. I am hoping to do a first release soon. As for the motivation angle, the solution in this particular instance is fairly simple. Use the software to enforce scheduling andpedagogy,y and a human tutor to provide emotional and social support. This division allows any literate person to become an effective tutor with a few hours of training.

I am hoping that the average student can complete the whole curriculum in five years. That would mean that (assuming they start at between 4 and 5 years old), the average student would have college-level reading and writing skills by the time they are nine or ten.

Most complete explanation so far is in the pedagogy page: https://picturesareforbabies.com/home/pedagogy/

AI and camera counter human trafficking

https://spectrum.ieee.org/traffickcam-human-trafficking-hotel-ai
1•asdefghyk•38s ago•0 comments

AI Browser Extensions Leave Fingerprints Everywhere

https://webdecoy.com/blog/detect-ai-browser-extensions-claude-chatgpt-copilot/
1•cport1•2m ago•0 comments

Norman Podhoretz, 1930-2025

https://www.commentary.org/john-podhoretz/norman-podhoretz-1930-2025/
1•stmw•10m ago•0 comments

FTX insider Caroline Ellison has been moved out of prison

https://www.businessinsider.com/caroline-ellison-prison-release-ftx-sam-bankman-fried-2025-12
4•harambae•17m ago•1 comments

The Genius Effects of Old Movies [video]

https://www.youtube.com/watch?v=TunR4zCQ5Fk
3•billybuckwheat•23m ago•0 comments

Show HN: Made a Visionboard Tool

https://visionboardit.art/
1•girlwhocode•24m ago•0 comments

Minimum Viable Benchmark (For Evaluating LLMs)

https://blog.nilenso.com/blog/2025/11/28/minimum-viable-benchmark/
1•todsacerdoti•25m ago•0 comments

Fara-7B: An Efficient Agentic Model for Computer Use

https://www.microsoft.com/en-us/research/blog/fara-7b-an-efficient-agentic-model-for-computer-use/
1•mjshashank•26m ago•0 comments

Apple TV's new intro was done practical, not CGI or AI [video]

https://www.youtube.com/shorts/C3uLRJGVkmo
3•busymom0•30m ago•1 comments

Luminar Technologies, Inc. Initiates Voluntary Chapter 11 Proceedings

https://investors.luminartech.com/news-events/press-releases/detail/110/luminar-technologies-inc-...
2•rguiscard•37m ago•0 comments

The Lost Generation

https://www.compactmag.com/article/the-lost-generation/
4•koolba•41m ago•0 comments

Video: Lunar impact flash detected on the moon by Armagh Observatory

https://phys.org/news/2025-12-video-lunar-impact-moon-armagh.html
2•1659447091•41m ago•0 comments

How I Assess Open Source Libraries

https://nesbitt.io/2025/12/15/how-i-assess-open-source-libraries.html
1•gpi•45m ago•0 comments

Deaf Crocodile Blu-Rays

https://deafcrocodile.com/collections/blu-rays
2•gregsadetsky•47m ago•0 comments

The Core Problems of AI Coding

https://magong.se/posts/real-problems-ai-coding-lesswrong
2•mikasisiki•47m ago•0 comments

Project Zeros New Website

https://projectzero.google/
1•0xkato•51m ago•1 comments

Show HN: Website to APK Convertor

https://website2apps.com/
1•Codegres•54m ago•0 comments

Building a WASM Runner with Cloud Hypervisor

https://burakemir.ch/post/building-wasm-runner/
1•todsacerdoti•1h ago•0 comments

A Guide to Magnetizing N48 Magnets in Ansys Maxwell

https://blog.ozeninc.com/resources/from-datasheet-to-demagnetization-a-guide-to-magnetizing-n48-m...
2•peter_d_sherman•1h ago•0 comments

The Bifurcation in the AI Market

https://tomtunguz.com/2025-12-16-open-router-insights/
2•jaynate•1h ago•0 comments

OpenAI in Talks to Raise $10B, Adopt Amazon's AI Chips

https://www.bloomberg.com/news/articles/2025-12-17/openai-in-talks-to-raise-10-billion-from-amazo...
2•marc__1•1h ago•1 comments

Show HN: Better Gmail Tabs – turn search queries into tabs for fast email load

https://chromewebstore.google.com/detail/better-gmail-tabs/ffgbhpheihcopgdlgbabanhbgemohjgc
1•jharohit•1h ago•0 comments

Show HN: Obsidenc – a Rust-based paranoid-grade encryption utility

https://github.com/markrai/obsidenc
2•markrai•1h ago•0 comments

After years of resisting it, SpaceX now plans to go public

https://arstechnica.com/space/2025/12/after-years-of-resisting-it-spacex-now-plans-to-go-public-why/
2•somenameforme•1h ago•0 comments

What happened to iRobot can happen to anyone

https://www.engadget.com/home/what-happened-to-irobot-can-happen-to-anyone-164500625.html
4•codetiger•1h ago•2 comments

You're 25-35 years old? You're running out of time

https://breatheless.substack.com/p/youre-25-35-years-old-youre-running
3•sss111•1h ago•0 comments

Tesla engaged in deceptive marketing for Autopilot and Full Self-Driving, judge

https://techcrunch.com/2025/12/16/tesla-engaged-in-deceptive-marketing-for-autopilot-and-full-sel...
1•pseudolus•1h ago•0 comments

Show HN: 200+ Likes/day as fake profile → built my own dating app in 100 days

https://www.wctokyoseoul.com/ko
2•vulcanidic•1h ago•0 comments

Optimizing Claude Code

https://mays.co/optimizing-claude-code
2•stevenmays•1h ago•0 comments

Marshall Islands launches universal basic income scheme offering cryptocurrency

https://www.theguardian.com/world/2025/dec/17/marshall-islands-launches-universal-basic-income-sc...
1•uxhacker•1h ago•0 comments