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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/

Early and Late-Stage Hypergrowth

https://lethain.com/early-late-stage-hypergrowth/
1•milkglass•4m ago•0 comments

No Smoking Gun

https://notoriousbfg.com/no-smoking-gun/
2•trwhite•5m ago•0 comments

Scientists Gave Cocaine to Salmon

https://www.wired.com/story/cocaine-fueled-wild-salmon-swam-twice-as-far-as-sober-ones/
1•ohjeez•10m ago•0 comments

Building a Web Framework from Scratch

1•NewSmoke38•10m ago•0 comments

Shipping todometer, Version 3

https://cassidoo.co/post/todometer-v3/
1•cassidoo•13m ago•0 comments

Building a daily AI news brief in 325 lines of Python

https://gist.github.com/Agentic-Intel/33fa978b281667bf0852d33f146c4528
1•Alex_Vance•14m ago•0 comments

Monero Ecosystem

https://monero.eco/
1•Cider9986•14m ago•0 comments

Theseus: Reverse-engineered reconstruction of the original Xbox 5960 dashboard

https://github.com/MrMilenko/Theseus
1•LorenDB•15m ago•0 comments

New research on analyzing and predicting token consumption of coding agents

https://arxiv.org/abs/2604.22750
2•jiaxinpei•17m ago•1 comments

Sluggers.fyi: Moneyball and Mario Super Sluggers

https://www.sluggers.fyi/
1•gsdv•20m ago•1 comments

xAI Is Reportedly Using Just 11% of Its 550k Nvidia GPUs

https://wccftech.com/xai-using-just-11-percent-gpus-while-meta-google-squeeze-out-much-more/
4•lossolo•20m ago•0 comments

Show HN: Playground for the Spectre Programming Language

https://spectrelang.org/playground
1•pizza_man•21m ago•0 comments

Show HN: Memory Safe Argon2 Implementation in Pure Swift 6

https://github.com/mimiclone/argon2-swift
1•mimiclone•31m ago•0 comments

I got tired of messy PTO spreadsheets, so I built a simple tool

https://myfreecalendar.app/
1•aliencillo•33m ago•0 comments

Three dead in suspected hantavirus outbreak on Atlantic cruise ship

https://www.bbc.co.uk/news/live/cjrzp08wx4vt
1•etiam•35m ago•0 comments

Compatibility Is a Feature

https://yusufaytas.com/compatibility-is-a-feature
7•riowashere•37m ago•0 comments

Breathtaking

https://aeon.co/essays/do-hold-your-breath-on-the-benefits-of-conscious-breathing
1•andsoitis•43m ago•0 comments

Street Fishing in the Canals of 'Little Venice' – Treviso, Italy

https://www.nytimes.com/2026/04/21/travel/treviso-italy-canal-fishing-little-venice-local-guide.html
1•bookofjoe•44m ago•1 comments

Reality Is a Shared Hallucination (1997)

http://reactor-core.org/reality-hallucination.html
1•downbad_•46m ago•2 comments

Show HN: VidMark – Frame.io-style timestamped comments for Google Drive

https://github.com/markksantos/VidMark
1•markksantos•50m ago•0 comments

Waveoverhangs – Steep overhangs without supports

https://waveoverhangs.com/
1•SpyCoder77•51m ago•0 comments

Jensen says Nvidia now has 'zero percent' market share in China

https://www.tomshardware.com/tech-industry/artificial-intelligence/jensen-says-nvidia-now-has-zer...
4•iamflimflam1•51m ago•1 comments

UAE Plans to Run 50% of Government on Agentic AI Within Two Years

https://www.mitsloanme.com/article/uae-plans-to-run-50-of-government-on-agentic-ai-within-two-years/
2•andsoitis•59m ago•0 comments

Icestream – enabling efficient streaming writes in Apache Iceberg

https://github.com/jordepic/Icestream
2•jordepic•59m ago•1 comments

Techm Studios

https://www.techmstudios.co.za
1•mtyide•59m ago•0 comments

Keeping HamClock Alive

https://hamclock.com/
1•Ariarule•1h ago•0 comments

I'm Fighting Two Wars

https://www.ft.com/content/95f501d0-1493-47b0-8ada-dc7c942036c9
1•merksittich•1h ago•1 comments

The Planet Is Dying but You've Got Work on Monday

https://collapse2050.substack.com/p/the-planet-is-dying-but-youve-got
1•vrganj•1h ago•0 comments

Milei Ends Argentina's Deficit After 123 Years – Global Finance Magazine

https://gfmag.com/economics-policy-regulation/argentina-milei-administration-eliminates-deficit/
6•bilsbie•1h ago•1 comments

Onion Futures Act

https://en.wikipedia.org/wiki/Onion_Futures_Act
3•xvirk•1h ago•0 comments