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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/

Time travellers are using LinkedIn to teach us about artificial intelligence

https://www.ft.com/content/4a4b442c-7ae4-4553-bcab-d744d8d46c79
1•97-109-107•4m ago•0 comments

Beating Castlevania with Antithesis

https://antithesis.com/blog/castlevania/
1•luu•4m ago•0 comments

SpaceX rocket thought to have crashed into the moon in unintentional collision

https://www.theguardian.com/science/2026/aug/05/spacex-rocket-moon-crash-impact-falcon-9
1•tosh•4m ago•0 comments

Wispr Flow launches a Granola-styled meeting notetaker

https://techcrunch.com/2026/08/05/wispr-flow-is-preparing-to-launch-a-meeting-notetaker-updated-t...
1•ramn7•6m ago•0 comments

Show HN: Spacescience.tech – A Bubble Shooter mixed with 2048

https://spacescience.tech/
1•jetbalsa•6m ago•0 comments

SpaceX's AI ambitions burning through Starlink revenue

https://www.reuters.com/video/watch/idRW326204082026RP1/
2•mapping365•7m ago•0 comments

kkrepo – an open-source artifact repository

https://github.com/klboke/kkrepo
1•gjvc•9m ago•0 comments

Lockup expiry will offer the next test of investor appetite for SpaceX shares

https://www.reuters.com/legal/government/lockup-expiry-will-offer-next-test-investor-appetite-spa...
1•mapping365•10m ago•0 comments

OpenAI cuts GPT-5.6 pricing and adds Fast mode to the API

https://appwrite.io/blog/post/openai-cuts-gpt-56-pricing-and-adds-fast-mode-to-the-api
1•deepmem•12m ago•0 comments

The Asteroid That May Be Three Worlds

https://www.universetoday.com/articles/the-asteroid-that-may-be-three-worlds
1•rbanffy•12m ago•0 comments

RNet lets users use one AI credit balance across multiple apps [demo]

1•rNetAi•13m ago•0 comments

Outage of Denic Services

https://status.denic.de/
1•seb4433•15m ago•0 comments

Worm compromises popular NPM packages

https://securitylabs.datadoghq.com/articles/npm-worm-compromises-popular-npm-packages/
1•m-novikov•15m ago•0 comments

Zanzlanz released a game that has no assets

https://www.youtube.com/watch?v=Qr3VsZYQy4s
1•birdculture•15m ago•0 comments

China's tech giants race to put AI on delivery riders' heads

https://www.scmp.com/tech/big-tech/article/3362761/chinas-tech-giants-race-put-ai-delivery-riders...
2•01-_-•17m ago•0 comments

Nixpkgs has a due-process problem

https://www.domenkozar.com/2026/08/04/nixpkgs-has-a-due-process-problem/
1•ingve•17m ago•0 comments

Tomorrow's U.S. Senate Vote: Four Internet Bills, One Wrong Direction

https://www.eff.org/deeplinks/2026/08/senate-vote-tomorrow-four-internet-bills-one-wrong-direction
2•01-_-•17m ago•0 comments

TikTok Withheld a Safety Feature from Millions. One Died by Suicide

https://www.bloomberg.com/news/features/2026-08-04/confidential-tiktok-report-shows-algorithm-saf...
2•iamacyborg•22m ago•0 comments

Ask HN: How can I improve my products? Which one to keep working on?

1•bchhabra2490•24m ago•0 comments

Cloudexit – assess your cloud exit readiness

https://github.com/escapecloud/cloudexit/
1•bencehezso•25m ago•1 comments

Opus 5 is lazy (A Twitter thread)

https://twitter.com/kimmonismus/status/2084727476761083926
1•matthieu_bl•27m ago•1 comments

FelonyBench

https://www.felonybench.com/
1•Philpax•31m ago•1 comments

C++26: Embed

https://www.sandordargo.com/blog/2026/08/05/cpp26-embed
1•ingve•31m ago•0 comments

Show HN: Bean Network Tester – open-source bad network simulator

https://github.com/donislawdev/BeanNetworkTester
2•donislawdev•34m ago•0 comments

The Attack Was Authorized: The Missing Security Boundary for AI Agents

https://blog.iluxav.com/the-attack-was-authorized-the-missing-security-boundary-for-ai-agents
2•johlo•38m ago•0 comments

Ask HN: Did GitHub remove the stargazers list?

4•reconnecting•40m ago•0 comments

A technical framework for managed service offering bring-your-own-cloud

https://byocanywhere.org/
1•aloknnikhil•41m ago•0 comments

Show HN: Free, open-source Chrome extension for Play Console utilities

https://github.com/Visnalize/play-console-utils
1•khangnd•42m ago•0 comments

AI search is turning Reddit comments into ads

https://www.theverge.com/ai-artificial-intelligence/973098/reddit-ai-search-seo-marketing-brands-...
4•BlueBerry2001•44m ago•0 comments

Ignatius: Visualize Data Models, Data Graphs, and Data Flows

https://github.com/noormdev/ignatius
2•handfuloflight•45m ago•0 comments