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Bloom's two sigma problem (2020)

https://nintil.com/bloom-sigma
8•Tomte•1y ago

Comments

trane_project•1y 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/

New charter gives River Wye the right to be free from pollution

https://www.bbc.co.uk/news/articles/czx21820rn4o
1•susam•6m ago•0 comments

Yocto vs. Debian for building embedded Linux systems

https://sigma-star.at/blog/2026/05/you-probably-dont-need-yocto-and-thats-fine/
2•fanf2•12m ago•0 comments

Building a game engine for 20 years [video]

https://www.youtube.com/watch?v=4d-CKaBpLC4
1•AshleysBrain•13m ago•0 comments

Zig: Build System Reworked

https://ziglang.org/devlog/2026/#2026-05-26
3•tosh•16m ago•1 comments

Thunderbolt-Ibverbs: InfiniBand for Everyone

https://blog.hellas.ai/blog/thunderbolt-ibverbs/
2•grw_•17m ago•0 comments

Rsync 3.4.3 has hundreds of Claude commits

https://mastodon.gamedev.place/@JeremiahFieldhaven/116654345332213390
10•fooker•21m ago•1 comments

Apple working to cram Gemini model into iPhone to power new Siri

https://arstechnica.com/ai/2026/05/apple-reportedly-trying-to-distill-googles-multi-trillion-para...
2•TMWNN•21m ago•0 comments

How we run Gemini at scale across billions of posts

https://www.modash.io/engineering/how-we-run-gemini-at-scale-across-billions-of-posts
1•igarnedo•22m ago•0 comments

How many emails should be in the waitlist before launching an application?

1•dash_ai•23m ago•1 comments

Microsoft wants you to share your health symptoms with its new Copilot tool

https://www.xda-developers.com/microsoft-wants-you-to-share-your-symptoms-with-its-new-copilot-he...
1•01-_-•27m ago•0 comments

ICE to keep an eye on your eyes under $25M biometric scanner deal

https://www.theregister.com/public-sector/2026/05/29/ice-awards-bi2-25m-contract-for-1570-biometr...
1•01-_-•28m ago•0 comments

Putin's $26B Quest for Longevity

https://www.wsj.com/world/russia/putin-longevity-antiaging-92dee6e8
1•kubami•30m ago•0 comments

Best OLM to PST Converter Tool to Convert Mac OLM to PST

https://apps.microsoft.com/detail/9n7jk7z3546j?hl=en-US&gl=US
1•tieanderson•31m ago•0 comments

Mercedes-Benz may be shut out of U.S. market due to Chinese ownership

https://www.cnbc.com/2026/05/29/mercedes-benz-ban-congressional-bill-china-ownership.html
1•KnuthIsGod•33m ago•0 comments

Meta Lays Off 8k Employees, as A.I. Casualties Mount

https://www.nytimes.com/2026/05/19/technology/meta-layoffs-ai.html
2•tagyro•36m ago•1 comments

The true power of regular expressions (2012)

https://www.npopov.com/2012/06/15/The-true-power-of-regular-expressions.html
1•downbad_•42m ago•1 comments

'Mind-blowing': Iron-rich immune cells help homing pigeons navigate

https://www.science.org/content/article/mind-blowing-iron-rich-immune-cells-help-homing-pigeons-n...
3•XzetaU8•49m ago•0 comments

The SLAX Scripting Language: An Alternate Syntax for XSLT

http://juniper.github.io/libslax/slax-manual.html
1•thefilmore•53m ago•0 comments

Danish pension fund excludes SpaceX citing governance and valuation

https://www.reuters.com/legal/transactional/danish-pension-fund-excludes-spacex-citing-governance...
26•vrganj•54m ago•4 comments

Tesla Self-Certifies Level 4 Autonomous Vehicles in Texas

https://www.notateslaapp.com/news/4216/tesla-self-certifies-l4-autonomy-in-texas
13•frankacter•56m ago•1 comments

Sana high-resolution image and video generation from NVidia

https://github.com/NVlabs/Sana
1•andsoitis•56m ago•0 comments

Privacy and security on computing devices need to become far stronger

https://xcancel.com/GrapheneOS/status/2044440381803069778#m
14•Cider9986•59m ago•0 comments

A $2k AI-generated film will make its debut at Tribeca

https://www.theverge.com/entertainment/939067/ai-film-dreams-of-violets-tribeca
2•fuzzythinker•1h ago•0 comments

xPrize Launches Hackathon with $2M Prize Pool, Backed by Google

https://www.xprize.org/news/xprize-launches-hackathon-with-2-million-prize-pool-backed-by-google
2•T-A•1h ago•0 comments

Stanford scientists just built a room-temperature quantum device

https://maketecheasier.com/stanford-scientists-just-built-a-room-temperature-quantum-device-that-...
1•SVI•1h ago•1 comments

An Excruciatingly Detailed Guide to SSH

https://grahamhelton.com/blog/ssh-cheatsheet
4•thunderbong•1h ago•0 comments

Virtual Railfan

https://virtualrailfan.com:443/
2•tkgally•1h ago•0 comments

Expanding the lifespan of solid-state batteries

https://www.mpg.de/26391218/how-dendrites-shorten-the-lifespan-of-solid-state-batteries
2•croes•1h ago•0 comments

LLM Paper Trading

https://gertlabs.com/spectate?game=trading
6•gertlabs•1h ago•4 comments

Explosives Synthesis, Ricin Production and Anatomical Neutralization Protocols

https://vostoktechnicalbureau.substack.com/p/red-team-technical-dossier-operational
1•VostocBuraeu•1h ago•0 comments