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Bloom's two sigma problem (2020)

https://nintil.com/bloom-sigma
8•Tomte•6mo ago

Comments

trane_project•6mo 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/

AI-powered surveillance firms are gunning for a share of the Gaza spoils

https://www.972mag.com/ai-surveillance-gaza-palantir-dataminr/
1•cramsession•29s ago•0 comments

AI's Wrong Answers Are Bad. Its Wrong Reasoning Is Worse

https://spectrum.ieee.org/ai-reasoning-failures
1•pseudolus•2m ago•0 comments

Wikipedia's most-read articles of 2025

https://wikimediafoundation.org/news/2025/12/02/announcing-wikipedias-most-read-articles-of-2025/
1•andsoitis•5m ago•0 comments

Thoughts on AI Progress

https://www.dwarkesh.com/p/thoughts-on-ai-progress-dec-2025
1•tfirst•8m ago•0 comments

A Directory of Every AI Tool for Hardware Engineers

https://www.hardwareai.directory
1•anu_bonth•9m ago•1 comments

Basecamp/Fizzy

https://github.com/basecamp/fizzy
1•doppp•11m ago•0 comments

Remove Attachments from Gmail Messages

https://attachments-extractor.ybouane.com/
1•michaelrkn•14m ago•1 comments

Built a tool which sizes and selects water filters

https://hydroanalyze.tech/
1•harishiitkgp7•20m ago•0 comments

Intrarectal perfluorodecalin for enteral ventilation in a first-in-human trial

https://www.cell.com/med/abstract/S2666-6340(25)00314-9
1•surprisetalk•20m ago•0 comments

Ambsheet: A spreadsheet for exploring scenarios [video]

https://www.youtube.com/watch?v=EtC2XiGFh7E
1•surprisetalk•20m ago•0 comments

Animalcules and Their Motors

https://www.asimov.press/p/flagella
1•surprisetalk•21m ago•0 comments

Planetary Robotics. Beyond Humanoids.

https://akash.earth/
1•maxnajer•22m ago•1 comments

Kohler Can Access Pictures from "End-to-End Encrypted" Toilet Camera

https://varlogsimon.leaflet.pub/3m6zrw6k2bs2p?interactionDrawer=quotes
13•TimDotC•26m ago•7 comments

Reverse-engineering Claude's sandbox, then building my own

https://michaellivs.com/blog/sandboxed-execution-environment
1•handfuloflight•29m ago•0 comments

Unpaid Labour in Productive Capacity

https://danieltan.weblog.lol/2025/12/appendix-b-unpaid-labour-in-productive-capacity
2•danieltanfh95•32m ago•0 comments

Is there anybody know the Open deep research modle:mirothinker

1•wuqiaocauc•32m ago•0 comments

UX Pilot's subscription defaults and refund process

1•haomiao33•36m ago•0 comments

Zillow deletes climate risk data from listings after complaints it harms sales

https://www.theguardian.com/environment/2025/dec/01/zillow-removes-climate-risk-data-home-listings
6•dredmorbius•42m ago•0 comments

The threats from AI are real – Sen. Bernie Sanders [video]

https://www.youtube.com/watch?v=K3qS345gAWI
3•timetraveller26•42m ago•0 comments

Open source tech interview assistant

https://github.com/claeusdev/prep-buddy
1•claeusdev•48m ago•0 comments

The strangest Excel functions you'll never use

https://www.makeuseof.com/strange-microsoft-excel-functions-no-one-ever-uses/
2•rfarley04•49m ago•0 comments

Composing capability security and conflict-free replicated data types

https://spritely.institute/news/composing-capability-security-and-conflict-free-replicated-data-t...
1•todsacerdoti•53m ago•0 comments

Iran court fines US $22B over Woman, Life, Freedom protests

https://www.iranintl.com/en/202512029239
2•pinewurst•1h ago•1 comments

Reversing IDA's Lumina Protocol

https://stack.int.mov/reversing-idas-lumina-protocol/
1•19h•1h ago•0 comments

China's Robot Training Factory: Where Humanoids Learn to Work

https://www.sixthtone.com/news/1017920
1•rguiscard•1h ago•0 comments

Ask HN: Why don't buildings have dry warm up rooms for your laptop in winter?

1•amichail•1h ago•8 comments

Google will start building data centers in space, powered by the sun, in 2027

https://www.businessinsider.com/google-project-suncatcher-sundar-pichai-data-centers-space-solar-...
4•cpeterso•1h ago•6 comments

Show HN: Cupertino – MCP server giving Claude offline Apple documentation

https://aleahim.com/blog/cupertino-ecosystem/
4•mihaela•1h ago•1 comments

Iranian MPs decry lack of observance of female dress code

https://www.newarab.com/news/iranian-mps-decry-lack-observance-female-dress-code
4•mhb•1h ago•1 comments

Francis Ford Coppola, Who Says He's 'Broke,' Is Selling a $1M Watch

https://www.nytimes.com/2025/10/23/fashion/francis-ford-coppola-watch-auction.html
1•handfuloflight•1h ago•1 comments