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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/

Billionaire Tax Officially Heads to Nov. 3 Ballot

https://www.sos.ca.gov/administration/news-releases-and-advisories/2026-news-releases-and-advisor...
1•simonpure•1m ago•0 comments

Dallas Fed paper: unauthorized immigration drove ~30% of home-price growth

https://www.wsj.com/opinion/border-enforcement-does-affect-american-workers-wallets-cc45d6b0
1•bilsbie•4m ago•0 comments

Roger Cook (Journalist)

https://en.wikipedia.org/wiki/Roger_Cook_(journalist)
1•petethomas•6m ago•0 comments

Ask HN: Is Anyone Using Filtr?

https://kaylees.site/wipr2-whats-new.html#filtr
1•dotcoma•6m ago•0 comments

Rich Programmer Food (2007)

https://steve-yegge.blogspot.com/2007/06/rich-programmer-food.html
1•tosh•9m ago•0 comments

'Can a machine do this job?' is the wrong question

https://www.ft.com/content/47f4d549-4560-4830-bf55-47774a9057bc
1•xnx•11m ago•0 comments

Which Copyleft Licence Is Suitable for an SVG?

https://shkspr.mobi/blog/2026/06/which-copyleft-licence-is-suitable-for-an-svg/
2•ajdude•17m ago•1 comments

(How to Write a (Lisp) Interpreter (In Python))

https://norvig.com/lispy.html
11•tosh•18m ago•2 comments

Show HN: CommitGate – Automatically scan your commit for vulnerabilities

https://github.com/ductrl/CommitGate
2•ductrl•19m ago•2 comments

Why Early-Stage Founders Are Misunderstood by Everyone with a Normal Job

https://abzglobal.net/technology/why-early-stage-founders-are-misunderstood-by-everyone-with-a-no...
2•mariansorca•22m ago•0 comments

Olympian arrested for touching remnants of decaying Reflecting Pool: report

https://www.rawstory.com/reflecting-pool-paint-algae/
2•hn_acker•23m ago•0 comments

Show HN: Trustmux – Lightweight Secure Daemon for Mobile Shell Access

https://trustmux.dev
2•dustinkirkland•24m ago•0 comments

Occupancy Math on the AMD MI355X: A From-First-Principles Guide

https://indianspeedster.github.io/blog/occupancy-math-mi355x/
1•skidrow•24m ago•0 comments

Don't Do That PhD

https://twitter.com/AI_in_LEO/status/2068511650215325847
1•gmays•31m ago•0 comments

Specs by Snapchat

https://www.specs.com/
1•ruckfool•32m ago•0 comments

I Still Live in the Terminal

https://blog.tacoda.dev/why-i-still-live-in-the-terminal-0d27918d85bb
2•tacoda•34m ago•3 comments

Cotypist – Smart Autocomplete for Mac

https://cotypist.app/
1•lorenz_li•37m ago•0 comments

Show HN: VS Code agent optimized for affordable coding plans

https://smartdino.dev/features
1•ylian•37m ago•0 comments

Tribes of Programming (2017)

https://josephg.com/blog/3-tribes/
2•downbad_•39m ago•1 comments

Show HN: Agent Departures

https://agent-departures.vercel.app/
1•qainsights•39m ago•0 comments

Controversial Programming Opinions (2012)

https://programmers.blogoverflow.com/2012/08/20-controversial-programming-opinions/
1•downbad_•39m ago•0 comments

Show HN: Browser-Based Video Converter

https://cliparr.dev/convert/
1•TechSquidTV•40m ago•0 comments

Europe buys the future, America builds it

https://www.economist.com/finance-and-economics/2026/06/18/europe-buys-the-future-america-builds-it
3•gmays•40m ago•1 comments

Bending Emacs Ep. 14: Prototype iOS apps with agent-shell artist-mode and skills [video]

https://www.youtube.com/watch?v=7fdHeUoRRgg
1•xenodium•42m ago•0 comments

Ask HN: Why Do AI Credits Expire

3•kuberwastaken•42m ago•4 comments

Update Secure Boot Cert Before It Expires

https://nochan.net/b/Internet-Crap/20260621-Update-Secure-Boot-Cert-Before-It-Expires/
2•Bender•42m ago•2 comments

Show HN: AI Convert – built from my Android phone, no laptop

https://www.ai-convert.xyz
1•kenengmathias•44m ago•0 comments

PostmarketOS v26.06 (Alpen Avocado) released

https://postmarketos.org/blog/2026/06/21/v26.06-release/
2•fossdd•45m ago•0 comments

Vagus Atlas Explorer

https://drsiyarb.github.io/vagus_nerve_explorer/explorer/
1•brandonb•48m ago•0 comments

Show HN: Finikit – 33 free financial calculators, all in the browser

https://finikit.com/
2•anagnoraxis•49m ago•0 comments