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Bloom's two sigma problem (2020)

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

Comments

trane_project•8mo 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/

Overshoot: The World Is Hitting Point of No Return on Climate

https://e360.yale.edu/features/1.5-degrees-tipping-points
1•Brajeshwar•18s ago•0 comments

After 34 years, Linux community has a contingency plan to replace Linus Torvalds

https://www.tomshardware.com/software/linux/linux-kernel-community-draws-up-contingency-plan-to-r...
1•smurda•4m ago•0 comments

The Questions That Survive Every Answer

https://gilpignol.substack.com/p/the-questions-that-survive-every
1•light_triad•5m ago•0 comments

DECwindows Motif

https://products.vmssoftware.com/decwindowsmotif
1•doener•5m ago•0 comments

Isolation and Permissiveness of Distributed Transactions in MongoDB

https://www.mongodb.com/company/blog/engineering/formal-methods-beyond-correctness-isolation-perm...
1•todsacerdoti•6m ago•0 comments

Silicon Empires: The Political Economy of AI with Nick Srnicek

https://thedigradio.com/podcast/silicon-empires-w-nick-srnicek/
1•hirpslop•10m ago•0 comments

The Shape of Reasoning: Topological Analysis of Large Language Models

https://arxiv.org/abs/2510.20665
2•oldfuture•11m ago•0 comments

Craft Agents: Work with most powerful agents in the world, with the UX they dese

https://agents.craft.do
1•nateroling•11m ago•1 comments

SnapSafe: Just added encrypted video to my FOSS secure camera app

https://snapsafe.org/
1•Wavesonics•12m ago•1 comments

Show HN: Figma MCP is read-only,so I built a pilot MCP by code execution

https://github.com/youware-labs/figma-pilot
1•marv1nnnnn•12m ago•0 comments

Wordle but Roguelike

https://store.steampowered.com/app/4157850/Randels_Quest/
1•lafferty•13m ago•0 comments

LLMs and Executive Function

https://til.andrew-quinn.me/posts/claude-code-and-executive-function/
1•walterbell•15m ago•0 comments

Managing Through Reorganizations

https://nemethgergely.com/blog/managing-through-reorganizations
1•gergelyke•16m ago•0 comments

Show HN: Free Facebook Video Downloader with Original Audio Quality

https://facebookvideodownload.com
1•yaoluxing•18m ago•0 comments

Show HN: AI-Generated Trading View strategies with no lock in

https://staunch.ai/
1•irasigman•18m ago•0 comments

Removing the Gemini watermark: from OpenCV to LaMa to millisecond algorithm

https://geminiwatermarkcleaner.com/changelog.html
1•heftykoo•19m ago•2 comments

Flapping Airplanes is a frontier data efficiency lab

https://flappingairplanes.com/
2•thedataexchange•19m ago•0 comments

Show HN: Intent-Aware RAG – Moving from Vector Matching to 5W1H Accounting

https://github.com/nickhuang99/Intent-Aware-RAG
1•nickhuang99•20m ago•0 comments

Meta's crawler made 11M requests to my site in 30 days

https://old.reddit.com/r/webdev/comments/1qpqapj/metas_crawler_made_11_million_requests_to_my_site/
2•speckx•22m ago•0 comments

It's Time to Start Tooting Your Own Horn at Work

https://www.wsj.com/lifestyle/careers/its-time-to-start-tooting-your-own-horn-at-work-7838f92a
2•petethomas•22m ago•0 comments

Tesla to Stop Production of Models S and X

https://www.wsj.com/business/autos/tesla-tsla-q4-earnings-report-2025-191b2aab
2•fortran77•25m ago•4 comments

C# and TypeScript with Anders Hejlsberg [video]

https://www.youtube.com/watch?v=uMqx8NNT4xY
1•gnabgib•35m ago•0 comments

Pablo's galaxy ran out of fuel as black hole choked off supplies

https://phys.org/news/2026-01-death-thousand-pablo-galaxy-ran.html
1•PaulHoule•37m ago•0 comments

I built an AI tool to generate clothing designs

https://aiclothes.ai/
2•Pluviobyte•38m ago•0 comments

Show HN: Schema-first codegen for SQL, Rust, Go, Python and TS (single binary)

https://github.com/hlop3z/astroladb
1•hlop3z•41m ago•1 comments

MSX is a standardized home computer architecture

https://en.wikipedia.org/wiki/MSX
2•doener•43m ago•0 comments

I made a website that has unlimited memory for chat GPT and Claude coding

https://www.thetoolswebsite.com/
2•DylanWain•48m ago•0 comments

Show HN: Eure – TOML-like data notation with arbitrary nesting and tagged unions

https://github.com/Hihaheho/eure
1•ryo33_hirayama•49m ago•0 comments

New iPhone failures on Telstra network compound Triple Zero crisis

https://www.afr.com/companies/telecommunications/new-iphone-failures-on-telstra-network-compound-...
2•KnuthIsGod•50m ago•0 comments

Property-based testing for web UIs

https://github.com/antithesishq/bombadil
1•lwhsiao•56m ago•0 comments