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Bloom's two sigma problem (2020)

https://nintil.com/bloom-sigma
8•Tomte•10mo ago

Comments

trane_project•10mo 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/

Bill Gates to testify before House Oversight in Epstein probe

https://www.politico.com/news/2026/04/07/bill-gates-testify-congress-epstein-probe-00861678
1•RickJWagner•22s ago•0 comments

Show HN: Skrun – Deploy any Agent Skill as an API (open source)

https://github.com/skrun-dev/skrun
2•frizull•4m ago•2 comments

Heron is open-source security auditor that interviews your AI agents

1•IlyaIvanov0•4m ago•1 comments

Bonsai: The Spatial Index That Tunes Itself

https://github.com/anurag-as/bonsai
1•sampathanurag3•7m ago•0 comments

How Do I Integrate News for B2B Domain

1•Teleglobal•8m ago•0 comments

Show HN: SuperUtter – A lightweight macOS TTS app (Kokoro local and ElevenLabs)

https://superutter.com/
2•jotaefea•11m ago•0 comments

Show HN: I turned professional genealogy methodology into a system prompt

https://github.com/DigitalArchivst/Open-Genealogy/tree/main/skills/gra
1•DigitalArchivst•11m ago•0 comments

US cities are axing Flock Safety surveillance technology

https://www.cnet.com/home/security/when-flock-comes-to-town-why-cities-are-axing-the-controversia...
2•giuliomagnifico•13m ago•0 comments

Show HN: Heron is open-source security auditor that interviews your AI agents

1•IlyaIvanov0•13m ago•0 comments

FBI: Americans lost a record $21B to cybercrime last year

https://www.bleepingcomputer.com/news/security/fbi-americans-lost-a-record-21-billion-to-cybercri...
1•anonhaven•13m ago•0 comments

Show HN: Domternal – Rich text editor toolkit on ProseMirror with Angular UI

https://github.com/domternal/domternal
1•thomasnowhere•15m ago•0 comments

MegaTrain: Full Precision Training of 100B+ Parameter LLMs on a Single GPU

https://arxiv.org/abs/2604.05091
2•chrsw•20m ago•0 comments

Takeaways from Our Search for Bitcoin's Creator

https://www.nytimes.com/2026/04/08/business/takeaways-satoshi-nakamoto-bitcoin-adam-back.html
2•glenstein•21m ago•0 comments

Show HN: I pipe free sports streams into Jellyfin – no ads, just HLS

https://github.com/pcruz1905/hls-restream-proxy
2•pruz•21m ago•0 comments

The Empty Middle of AI Coding

https://xificurc.github.io/blog/the-empty-middle-of-ai-coding/
2•comma_at•24m ago•1 comments

Apple II emulator with extensive analytical tools

https://bsky.app/profile/jtauber.com/post/3mixa6ywbbk2l
1•mariuz•26m ago•0 comments

$200 subscription VS $3,650 in compute

https://sderosiaux.substack.com/p/200-subscription-vs-3650-in-compute
2•chtefi•33m ago•2 comments

Hacking Google Support: Leaking call logs and deanonymising agents

https://michaeldalton.au/posts/hacking-google-support
3•llui85•34m ago•1 comments

Uberbrain – Open-source photonic neuromorphic computing architecture (CC0)

https://github.com/GreenSharpieSmell/uberbrain
2•RockyDBear•35m ago•0 comments

Child Safety Blueprint

https://openai.com/index/introducing-child-safety-blueprint/
1•salkahfi•36m ago•0 comments

Selfhosting Vaultwarden (2023)

https://nachtimwald.com/2023/03/16/vaultwarden-a-self-hosted-password-vault/
1•nivethan•36m ago•0 comments

The Fixed Point – God, governance, and contraction mappings

https://hadleylab.org/blogs/2026-04-07-the-fixed-point/
1•idrdex•37m ago•0 comments

Disgruntled researcher leaks "BlueHammer" Windows zero-day exploit

https://www.bleepingcomputer.com/news/security/disgruntled-researcher-leaks-bluehammer-windows-ze...
2•ianrahman•37m ago•0 comments

Show HN: A 400-page book on agentic engineering with Codex CLI

https://leanpub.com/codex-cli/c/HACKERNEWS30
2•dvaughan•40m ago•0 comments

Chlorpromazine

https://en.wikipedia.org/wiki/Chlorpromazine
2•ogogmad•40m ago•0 comments

The Devil's Dictionary of Vibe Coding

https://gist.github.com/artfwo/63eaaffdb47cbba342b04f989bd9463b
3•latexr•43m ago•0 comments

Trier OS – Industrial Operating System

https://github.com/DougTrier/trier-os
3•DougTrier•44m ago•1 comments

Readership Maths Skills

https://entropicthoughts.com/readership-math-skills
1•ibobev•44m ago•0 comments

Anthropic's most powerful AI model Mythos Preview is too dangerous for release

https://www.euronews.com/next/2026/04/08/why-anthropics-most-powerful-ai-model-mythos-preview-is-...
1•frizlab•44m ago•0 comments

Valse Vrienden in Het Onderwijs

https://chuniversiteit.nl/dutch/valse-vrienden-in-het-onderwijs
1•ibobev•44m ago•0 comments