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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/

Mauna Loa Solar Observatory Reopens to Support Artemis II Mission

https://www.meteorologicaltechnologyinternational.com/news/space-weather/mauna-loa-solar-observat...
1•lgeorget•29s ago•0 comments

US summons bank bosses over cyber risks from Anthropic's latest AI model

https://www.theguardian.com/technology/2026/apr/10/us-summoned-bank-bosses-to-discuss-cyber-risks...
1•ascold•40s ago•0 comments

Ask HN: Why Databases Instead of Filesystem?

1•uticus•41s ago•0 comments

Ask HN: Will we ever do something about patent trolls?

2•giancarlostoro•2m ago•0 comments

Fewer than 3 in 10 register for HMRC's Making Tax Digital shake-up

https://www.theregister.com/2026/04/10/mtd_hmrc/
1•Brajeshwar•3m ago•0 comments

Claude Mythos and misguided open-weight fearmongering

https://www.interconnects.ai/p/claude-mythos-and-misguided-open
1•speckx•4m ago•0 comments

Ask HN: How do designers and marketers use Command Line? AI? Technical tools?

1•vietthan•5m ago•0 comments

How do you and your team manage secrets day to day?

1•markvm•5m ago•0 comments

The Chilling Role of ChatGPT in Mass Shootings and Other Violence

https://www.motherjones.com/media/2026/04/chatgpt-tumbler-ridge-fsu-openai-chatbots-mass-shootings/
1•cdrnsf•8m ago•0 comments

Powell, Bessent discussed Mythos cyber threat with major U.S. banks

https://www.cnbc.com/2026/04/10/powell-bessent-us-bank-ceos-anthropic-mythos-ai-cyber.html
2•kaycebasques•8m ago•0 comments

Propulsion and Energy Physicist Photos at Deep Tech Week NYC 2026

https://www.flickr.com/photos/timventura/albums/72177720333020849/
1•timventura•8m ago•1 comments

The growth metric Silicon Valley loves most is also its least trusted

https://www.latimes.com/business/story/2026-04-07/growth-metric-silicon-valley-loves-most-is-also...
2•1vuio0pswjnm7•8m ago•0 comments

The effects of caffeine consumption do not decay with a ~5 hour half-life

https://www.lesswrong.com/posts/vefsxkGWkEMmDcZ7v/the-effects-of-caffeine-consumption-do-not-deca...
3•swah•9m ago•0 comments

Show HN: LightningWindowSwitcher – search for open windows on macOS/Win

https://lightningwindowswitcher.com/
1•afonso_soares•10m ago•0 comments

A Chicago Fan's Recordings of 10k Music Shows Are Now Online

https://blockclubchicago.org/2026/04/10/from-early-nirvana-to-phish-a-chicago-fans-secret-recordi...
2•xnx•10m ago•0 comments

Most Americans are using AI but are sick and tired of hearing about it: survey

https://nypost.com/2026/04/09/tech/most-americans-are-using-ai-but-people-are-sick-and-tired-of-h...
2•1vuio0pswjnm7•10m ago•0 comments

Journalists, whistleblowers and activists should set a Dead Man's Switch

https://alcazarsec.com/deadmanswitch/use-cases/journalists
1•alcazar•12m ago•0 comments

Rethinking the Riemann Hypothesis through wave interactions (Flux perspective)

https://zenodo.org/records/19450903
2•kimhanhee•13m ago•0 comments

AI Readiness Checker – See how AI bots interact with your website

https://zerokit.dev/tools/ai-readiness.html
1•SCbusiness•14m ago•0 comments

EU Big Tech fines top $7B in 2 years

https://www.cnbc.com/2026/04/10/google-meta-big-tech-6-billion-euros-eu-fine.html
3•1vuio0pswjnm7•14m ago•0 comments

Founders, Open Your App

https://timleland.com/founders-open-your-app/
1•TimLeland•15m ago•0 comments

Show HN: Zeroclawed: Secure Agent Gateway

https://github.com/bglusman/zeroclawed
3•bglusman•15m ago•0 comments

Is Schoolwork Optional Now?

https://www.theatlantic.com/technology/2026/04/ai-agents-school-education/686754/
1•JumpCrisscross•15m ago•0 comments

A full-on embrace: how the EU's largest news publisher fell in love with the US

https://www.theguardian.com/media/2026/apr/08/how-axel-springer-germany-mathias-doepfner-us-polit...
1•doener•16m ago•0 comments

Proton: Born Private

https://proton.me/mail/born-private
2•qkc3p3Jbf4•17m ago•1 comments

CPUid Compromised

https://www.bleepingcomputer.com/news/security/supply-chain-attack-at-cpuid-pushes-malware-with-c...
4•pashadee•18m ago•0 comments

March inflation soars, confirming Iran war price shock

https://www.axios.com/2026/04/10/cpi-march-inflation-iran-trump
2•Amorymeltzer•18m ago•1 comments

Show HN: VigIA – A deterministic FSM in .NET 10 to stop LLM hallucinations

https://github.com/JordanCT/VigIA-Orchestrator
2•JordanCT•18m ago•0 comments

Installing Every* Firefox Extension

https://jack.cab/blog/every-firefox-extension
2•speckx•19m ago•1 comments

Roundtable – Multi-character chat where each character runs on a different model

https://github.com/Kaidorespy/Roundtable
2•formslip•20m ago•0 comments