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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/

Show HN: Bets on Post-GPU Compute

https://www.vishalv.com/notes/bets-on-post-GPU-compute
1•visvig•47s ago•0 comments

Show HN: I implemented generics in my programming language

https://axe-docs.pages.dev/features/generics/
2•death_eternal•5m ago•0 comments

'I've been allergic to AI for a long time': an interview with Peter Thiel

https://www.spectator.co.uk/article/ive-been-allergic-to-ai-for-a-long-time-an-interview-with-pet...
1•kerim-ca•10m ago•1 comments

Hell is other people's markup

https://www.htmhell.dev/adventcalendar/2025/13/
1•emschwartz•11m ago•0 comments

Show HN: web app to match with people nearby on 7 dimensions of needs

https://deep-union-web.vercel.app/
1•arthurstarlake•13m ago•0 comments

Pilot narrowly avoids 'midair collision' with US Air Force plane near Venezuela

https://www.theguardian.com/us-news/2025/dec/14/jetblue-pilot-avoids-midair-collision-air-force-v...
4•prmph•14m ago•1 comments

Feature-First Development

https://jackson.dev/post/feature-first-development/
1•Arcuru•18m ago•0 comments

Role reversal: Meta adopts Qwen as Chinese AI becomes industry foundation

https://www.scmp.com/tech/big-tech/article/3336243/role-reversal-meta-adopts-qwen-chinese-ai-beco...
2•djhu9•23m ago•0 comments

PSRT v2.1 – A Bounded Architecture for Intelligence and Meaning

https://zenodo.org/records/17932629
1•nettalk83•24m ago•1 comments

Redfern Station Christmas artwork to be removed after complaints of 'AI slop'

https://www.smh.com.au/national/nsw/redfern-station-s-ai-generated-christmas-artwork-to-be-remove...
1•healsdata•26m ago•0 comments

The Architects of AI Are TIME's 2025 Person of the Year

https://time.com/7339621/person-of-the-year-2025-ai-architects-choice/
1•pseudolus•26m ago•0 comments

The Copilot Usage Report 2025

https://microsoft.ai/news/its-about-time-the-copilot-usage-report-2025/
2•skeptic_ai•27m ago•0 comments

The Big City; Save the Flophouses

https://www.nytimes.com/1996/01/14/magazine/the-big-city-save-the-flophouses.html
1•ChadNauseam•28m ago•0 comments

Framework-agnostic Select and Toast components built with Web Components

1•dgseo•28m ago•0 comments

Show HN: A model that estimates when AI can do your job

https://dontloseyourjob.com/
2•claywren•30m ago•1 comments

Your Mac has a fast, offline LLM

https://zdgeier.com/macoschat.html
1•zdgeier•34m ago•2 comments

Show HN: Silly website to earn badges for touching grass

https://www.touched-grass.com
2•buildItN0w_•36m ago•0 comments

Dungeon-mode: a dungeon crawler game for Emacs

https://github.com/dungeon-mode/game
1•dustfinger•38m ago•0 comments

Denmark plans to restrict social media use for young people

https://apnews.com/article/denmark-social-media-ban-australia-1e96a3df3276cc2033a6f04effb89f51
6•pseudolus•39m ago•0 comments

ASL interpreters 'intrude' on Trump's right to control image, U.S. DOJ says

https://globalnews.ca/news/11576240/trump-white-house-sign-language-lawsuit-image/
1•rolph•40m ago•0 comments

A healthier sugar substitute: Engineered bacteria yield a sweet solution

https://phys.org/news/2025-12-healthier-sugar-substitute-bacteria-yield.html
1•pseudolus•41m ago•0 comments

The End of Concept Nativism

https://arxiv.org/abs/2505.18277
1•usingla•44m ago•0 comments

Linuxiac.com restricts access based on countries and regions

https://linuxiac.com/when-linus-met-linus-insights-from-torvalds-conversation-with-ltt/
1•Kk_vv•47m ago•0 comments

I'm tired of copying auth tokens as vibe coder

https://github.com/lofibrainwav/SixXon
1•brnestrm•47m ago•0 comments

Mom and daughter find stranger in trunk of Waymo

https://abc7.com/post/los-angeles-viral-video-mom-daughter-find-stranger-trunk-waymo-macarthur-pa...
6•lxm•51m ago•0 comments

Show HN: Turn every website into a scratch-off lottery ticket

https://github.com/AdmTal/scratch-off
1•admtal•51m ago•0 comments

Rural students: more likely to get diplomas but are less likely to go to college

https://theconversation.com/rural-high-school-students-are-more-likely-than-city-kids-to-get-thei...
2•PaulHoule•52m ago•0 comments

He's the Godfather of Modern Robotics. He Says the Field Has Lost Its Way

https://www.nytimes.com/2025/12/14/business/rodney-brooks-robots-roomba.html
2•ripe•55m ago•0 comments

Shakespeare Programming Language

https://en.wikipedia.org/wiki/Shakespeare_Programming_Language
1•dabinat•1h ago•0 comments

Show HN: A Lightweight Hono and Preact Template for Cloudflare Workers

https://github.com/keplerjst/hinoco
1•keplerjst•1h ago•0 comments