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Bloom's two sigma problem (2020)

https://nintil.com/bloom-sigma
8•Tomte•11mo ago

Comments

trane_project•11mo 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/

Oregon's Non-Affiliated Surge and the Socialist Realignment Nobody Talks About

https://fullstack.ing/posts/the-flight-from-party-oregons-non-affiliated-surge-and-the-socialist-...
1•fullstacking•7m ago•0 comments

Humanity on the Page

https://www.commonwealmagazine.org/writing-artificial-intelligence-ai-rand-richards-cooper
1•cainxinth•7m ago•0 comments

Show HN: TTS Studio: AI-Powered Text-to-Speech Tool

https://tts.haroun.dev/
2•shmayro•8m ago•0 comments

I got infected with a crypto-miner via misconfigured qBittorrent

https://blog.vasi.li/well-i-got-hacked/
1•vsviridov•12m ago•0 comments

What Software Engineers Can Learn from the Aviation Industry

https://mwalterskirchen.dev/blog/piloting-agentic-engineering/
2•pseudolus•16m ago•0 comments

NASA's Curiosity and Perseverance rovers capture Mars panoramas [video]

https://www.space.com/astronomy/mars/nasas-curiosity-and-perseverance-rovers-capture-sweeping-mar...
2•teleforce•19m ago•0 comments

A Report on Burnout in Open Source Software Communities (2025) [pdf]

https://mirandaheath.website/static/oss_burnout_report_mh_25.pdf
3•susam•20m ago•0 comments

New v2 UALink specification aims to catch up to NVLink

https://www.networkworld.com/article/4155357/new-v2-ualink-specification-aims-to-catch-up-to-nvli...
2•mindcrime•20m ago•0 comments

Keep Android Open: Why Free Android Matters

https://tux.re/forum/viewtopic.php?t=203
4•tux033•20m ago•0 comments

On Taste

https://endler.dev/2026/taste/
2•lwhsiao•24m ago•0 comments

Palantir Workers Are Finally Noticing the Skulls on Their Caps

https://www.techdirt.com/2026/04/30/palantir-workers-are-finally-noticing-the-skulls-on-their-caps/
5•throawayonthe•25m ago•1 comments

WolfCOSE: Zero alloc, PQC, MISRA-C, FIPS 140-3 built with wolfCrypt

https://github.com/aidangarske/wolfCOSE
2•aidangarske•25m ago•0 comments

AI Companies Can't Regulate Themselves. They Should Regulate Each Other

https://www.lawfaremedia.org/article/ai-companies-can-t-regulate-themselves-they-should-regulate-...
1•nedruod•27m ago•0 comments

Pentagon officials broadly detail $55B drone plan under DAWG

https://breakingdefense.com/2026/04/pentagon-officials-broadly-detail-55-billion-drone-plan-under...
1•thegdsks•28m ago•0 comments

Show HN: News on the Go

https://hncast.com/
2•ynarwal__•28m ago•0 comments

Industrial Policy for the Intelligence Age [pdf]

https://cdn.openai.com/pdf/561e7512-253e-424b-9734-ef4098440601/Industrial%20Policy%20for%20the%2...
1•avaer•33m ago•0 comments

A Programmer's Guide to Common Lisp

https://archive.org/details/a-programmers-guide-to-common-lisp
6•jellinek•35m ago•1 comments

Running a custom trained Piper TTS model on Raspberry Pi Zero 2W

https://old.reddit.com/r/LocalLLM/comments/1t0xho8/running_a_custom_trained_piper_tts_model_on/
1•yakkomajuri•36m ago•0 comments

Disabling the new AF_ALG by default in gnulib (from 2018)

https://lists.gnu.org/archive/html/coreutils/2018-06/msg00034.html
2•dxdxdt•36m ago•0 comments

Copy-Fail: Linux Privilege Escalation

https://copy.fail/#affected
2•joatmon-snoo•37m ago•1 comments

Bitcoin Is Venice (2021)

https://allenfarrington.medium.com/bitcoin-is-venice-bitcoin-is-741cc7d22e9
1•simonebrunozzi•37m ago•0 comments

Active exploitation of cPanel/WHM critical vulnerability

https://www.cyber.gov.au/about-us/view-all-content/alerts-and-advisories/active-exploitation-of-c...
1•Svoka•37m ago•0 comments

'Empire of Skulls' book review: When phrenology raced ahead

https://www.wsj.com/arts-culture/books/empire-of-skulls-review-when-phrenology-raced-ahead-1c1fdab0
4•hhs•38m ago•1 comments

Is Rise of the Robots (1994) the worst game?

https://old.reddit.com/r/amiga/comments/1t1407x/is_rise_of_the_robots_1994_actually_the_worst/
1•doener•38m ago•0 comments

Ask HN: Any nice project ideas that you know you'll never bring to life

1•atilimcetin•40m ago•0 comments

New study finds task switching raises risk in transplant surgeries

https://news.vt.edu/articles/2026/04/pamplin-bit-research-organ-transplant-task-switching.html
1•hhs•42m ago•0 comments

GameStop is preparing offer for eBay

https://finance.yahoo.com/markets/stocks/articles/gamestop-preparing-offer-ebay-wsj-212703455.html
2•avonmach•45m ago•0 comments

The downfall of OpenAI and who will follow

https://msukhareva.substack.com/p/the-downfall-of-openai-and-who-will
1•mnky9800n•50m ago•0 comments

Revolving doors weaken SEC oversight: study

https://news.mccombs.utexas.edu/research/revolving-doors-weaken-sec-oversight/
1•hhs•50m ago•0 comments

Why is an Oxford lecturer allowed to wear fake breasts to work?

https://www.andrewdoyle.org/p/why-is-an-oxford-lecturer-allowed
2•vlapsvlapszsz•50m ago•1 comments