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Bloom's two sigma problem (2020)

https://nintil.com/bloom-sigma
8•Tomte•7mo ago

Comments

trane_project•7mo 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/

Agent Native Architectures

https://every.to/guides/agent-native
1•azhenley•1m ago•0 comments

Halting Problem

https://en.wikipedia.org/wiki/Halting_problem
1•Brysonbw•3m ago•0 comments

I Store My Doctor Visits, Ideas, and Tasks in a Second Brain (2022)

https://www.ssp.sh/blog/pkm-workflow-for-a-deeper-life/
2•articsputnik•8m ago•0 comments

Can x402 save the Open Source Software movement?

https://easydns.com/blog/2026/01/10/can-x402-save-the-open-source-software-movement/
1•StuntPope•8m ago•0 comments

Extended Periodic Table

https://en.wikipedia.org/wiki/Extended_periodic_table
1•thunderbong•10m ago•0 comments

Observability wide events 101 (2024)

https://boristane.com/blog/observability-wide-events-101/
2•tosh•11m ago•0 comments

Operating system for human and AI Agent Collaboration

https://computer-agents.com
1•janlucasandmann•13m ago•1 comments

Finding and Fixing Ghostty's Largest Memory Leak

https://mitchellh.com/writing/ghostty-memory-leak-fix
2•thorel•13m ago•0 comments

Is Beef Tallow making a comeback?

https://www.nytimes.com/2026/01/10/dining/beef-tallow-food-pyramid-rfk-jr.html
2•gjkood•15m ago•0 comments

ARM Has a JavaScript Instruction

https://notnotp.com/notes/til-why-arm-has-a-js-instruction/
3•cod1r•15m ago•0 comments

I replaced doomscrolling with coding from my couch

https://kibbler.dev/
2•kewun•17m ago•1 comments

Covibes Covibing is for humans and AI

https://covibes.ai/
1•gpi•17m ago•0 comments

I Am Tired of Praise of Byproduct

https://win-vector.com/2026/01/10/i-am-tired-of-praise-of-byproduct/
2•jmount•20m ago•0 comments

Maduro's Crypto-Backed Oil Deals Put Tether at Center of Venezuela Money Drama

https://www.wsj.com/finance/currencies/maduros-crypto-backed-oil-deals-put-tether-at-center-of-ve...
1•JumpCrisscross•24m ago•0 comments

Jj Tug

https://shaddy.dev/notes/jj-tug/
1•todsacerdoti•25m ago•0 comments

The 5 European sites to honour David Bowie on the 10th anniversary of his death

https://www.euronews.com/culture/2026/01/10/the-five-european-sites-to-honour-david-bowie-on-the-...
1•thm•25m ago•0 comments

Logseq: A privacy-first, open-source platform for knowledge management

https://github.com/logseq/logseq
1•tosh•25m ago•0 comments

Show HN: Debrify – Open-source cross-platform debrid manager for Android

https://github.com/varunsalian/debrify
1•varun002•27m ago•0 comments

Rats caught on camera hunting flying bats

https://scienceclock.com/rats-caught-on-camera-hunting-flying-bats-for-the-first-time/
1•akg130522•27m ago•0 comments

Testing ECC NMI in a cubesat boot loader: intentional flash corruption for STM32

https://blog.010.one/Dont-snipe-me-in-space-intentional-flash-corruption-for-stm32-microcontrollers
1•fanf2•30m ago•0 comments

Surviving Rome – the surprising truths about everyday life in the empire

https://www.ft.com/content/aa498151-6ccb-45bc-9519-c38bcbc50c6e
6•bookofjoe•30m ago•1 comments

Evidence of upright walking found in 7M-year-old fossils

https://phys.org/news/2025-12-evidence-upright-million-year-sahelanthropus.html
1•geox•31m ago•0 comments

750k year old hominins from Morocco basal to the Homo sapiens lineage

https://www.nature.com/articles/s41586-025-09914-y
1•Anon84•31m ago•0 comments

Show HN: Shunting – train logic puzzles for young kids

https://lostmsu.github.io/Shunting/
1•lostmsu•32m ago•0 comments

Xzone malloc: memory allocator for Apple OS platforms

https://github.com/apple-oss-distributions/libmalloc/blob/af3c5dc3a540eeec030930b35b1349f4de40020...
3•PaulHoule•34m ago•0 comments

Protecting Humanity's Musical Heritage

https://projecttimestamper.org/blog/music/
2•arthuredelstein•35m ago•0 comments

When Governments Block Free Speech, Block Legal Reach with Offshore Web Hosting

https://cheapskatesguide.org/articles/offshore-web-hosting.html
4•worldofmatthew•38m ago•0 comments

Trump's Steep Science Budget Cuts to Be Turned Back by Congress

https://www.nytimes.com/2026/01/10/science/trump-science-budget-cuts-congress.html
3•MilnerRoute•38m ago•0 comments

Waywo. Because work doesn't have to be polished to be shared

https://medium.com/deliveroo-design/waywo-because-work-doesnt-have-to-be-polished-to-be-shared-2f...
1•herbertl•39m ago•0 comments

George Saunders Says Ditching These Three Delusions Can Save You

https://www.nytimes.com/2026/01/10/magazine/george-saunders-interview.html
1•mitchbob•41m ago•1 comments