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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/

US executives quit $25B gas venture over claims of secret Russian control

https://old.reddit.com/r/oil/comments/1xeql9r/us_executives_quit_25bn_gas_venture_over_claims/
1•MadrasThorn•2m ago•1 comments

Commission on Federal Paperwork: Drawings by Carol

https://nickseaver.net/paperwork/
1•Tomte•30m ago•0 comments

Denmark abandons plans to ditch Microsoft Office after technical problems

https://www.neowin.net/news/denmark-has-abandoned-plans-to-ditch-microsoft-office-after-technical...
2•bundie•31m ago•0 comments

Incompleteness and Computability – An Open Introduction to Gödel's Theorems

https://ic.openlogicproject.org/
1•the-mitr•32m ago•0 comments

Conway's Game of Life

https://en.wikipedia.org/wiki/Conway%27s_Game_of_Life
2•sweetdingoes•34m ago•0 comments

Why popular airplanes are getting scrapped years early

https://www.cnbc.com/2026/10/24/spirit-airlines-planes-scrapped-engine-shortage.html
2•kristianp•37m ago•0 comments

Ask HN: What are your most ambitious projects in 2026?

2•MzHN•43m ago•2 comments

Show HN: Music player for visually exploring music collection

https://github.com/Cliff-Lee/melodex
1•CP1979•46m ago•0 comments

Making DNS_Erlang Fast: Binary Tricks for the Beam

https://blog.dnsimple.com/2026/10/making-dns-erlang-fast/
2•signa11•48m ago•0 comments

America's Most Illegal Military Base [video]

https://www.youtube.com/watch?v=vIGub9r4a2o
1•dataflow•49m ago•0 comments

Michal Wallace on Narrative Programming: Why Learn J when LLMs Code?

https://alexalejandre.com/interviews/michal-wallace/
1•veqq•54m ago•0 comments

The BBC Strikes Back

https://joycevance.substack.com/p/the-bbc-strikes-back
1•Tomte•58m ago•0 comments

eMudhra faces a bigger test of public trust after security lapse

https://economictimes.indiatimes.com/ai/ai-insights/emudhra-faces-a-bigger-test-of-public-trust-a...
3•thunderbong•1h ago•0 comments

80% to 90% of women reproduce, but only about 40% of men do

https://unchartedterritories.tomaspueyo.com/p/do-women-reproduce-more-than-men
2•tudorconstantin•1h ago•0 comments

Modd: Flexible developer tool that runs processes,responds to filesystem changes

https://github.com/cortesi/modd
1•thunderbong•1h ago•0 comments

Show HN: Free Local Letterboxd Analytics

https://letterboxd.ddns.net/
1•shafiemoji•1h ago•0 comments

DHH's keynote at Rails World: "The most confusing funeral I've ever experienced"

https://www.globalnerdy.com/2026/09/27/dhhs-keynote-at-rails-world-2026-the-most-confusing-funera...
2•gurjeet•1h ago•1 comments

Intel 1103: The Tiny Chip That Killed Magnetic Core Memory and Saved Intel

https://www.youtube.com/watch?v=v3HczTwJHcM
1•cable2600•1h ago•0 comments

Musk claims Ukraine violated Starlink service agreement

https://www.cnbc.com/2026/10/24/ukraine-starlink-starshield-service-restored.html
4•kristianp•1h ago•1 comments

Black October

https://en.wikipedia.org/wiki/Black_October_(information_security)
2•BentonE•1h ago•0 comments

Show HN: Independent Vet – Find locally owned vets (and corporate ones) near you

https://independentvet.com/
2•packeted•1h ago•0 comments

Weight-loss drug reduces sleep apnea in two late-stage trials

https://medicalxpress.com/news/2026-10-triple-action-weekly-weight-loss.html
4•geox•1h ago•0 comments

The Trouble with the View from Above (2010)

https://www.cato-unbound.org/2010/09/08/james-c-scott/trouble-view-above/
1•perused•1h ago•0 comments

Show HN: Git-ing Over it, learn Git like you'll use it IRL

https://git-ing-over-it.vercel.app/
1•k2maan•1h ago•0 comments

Just Dashboard open-source dashboard for managing your VPS

https://github.com/JustDashboard/Just-Dashboard
1•Wayy10•1h ago•0 comments

Manage Your Dotfiles with Nothing but Git

https://terminal.ninja/guides/manage-dotfiles/
1•ankitg12•1h ago•0 comments

Retroviral insertions contributed to divergence of human and chimpanzee brains

https://www.science.org/doi/10.1126/sciadv.aeg5791
2•gumby•1h ago•0 comments

Show HN: Dadgpt Open Source Halloween Costume

https://dadgptcostume.vercel.app/
2•johnpolacek•1h ago•0 comments

iPhone apps no better for privacy than Android, Oxford study finds (2021)

https://www.tomsguide.com/news/ios-android-app-privacy-parity
3•cisc•2h ago•0 comments

Backd / Discovery

https://backd.io
1•ahmedels•2h ago•0 comments