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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/

Toward Self-Improving Agents

https://www.salesforce.com/news/stories/toward-self-improving-agents/?bc=HL
2•crsn•3m ago•0 comments

Using a Landline Phone in 2025

https://n1ugk.com/2025/09/using-a-landline-phone-in-2025/
2•austinallegro•9m ago•0 comments

Ensoniq EPS-16 Plus VST3 Emulator

https://github.com/mardlib/Ensoniq-EPS-16-Plus/tree/vst3-prototype
1•dijksterhuis•9m ago•0 comments

Hedgehog (Weapon)

https://en.wikipedia.org/wiki/Hedgehog_(weapon)
1•petethomas•11m ago•0 comments

98.css

https://jdan.github.io/98.css/#status-bar
2•lopespm•18m ago•1 comments

Building watchable digital twins of 64 World Cup games

https://rogerdickey.com/building-watchable-digital-twins-of-64-world-cup-games/
2•rogerdickey•18m ago•0 comments

Show HN: Ohnrscript – A systems language and HTTP unikernel in JavaScript syntax

https://github.com/Ohnrshyp/Ohnrscript
2•focusjordan•19m ago•0 comments

Snailmail Club

https://sketchkids.com/
2•engraveprice•23m ago•0 comments

Government withdraws reporter subpoenas for NYT after admitting legal errors

https://apnews.com/article/usmediatimesair-force-one-42429e4d4da8accc42b6c3ddf3f4fed5
2•petethomas•23m ago•1 comments

Linux from Scratch Security Advisories

https://www.linuxfromscratch.org/advisories/
2•turtleyacht•24m ago•1 comments

Show HN: Run GLM-4.5-Air(110B)on a 16GBRAM consumer machine

https://github.com/FedericoTs/quantprobe
1•federicoTXTS•24m ago•0 comments

Yorba – Software for a Quieter Internet

https://www.yorba.co/
1•cbystrom•25m ago•1 comments

I built for one user. Myself

https://www.indiehackers.com/post/i-built-for-one-user-myself-84ef3ca242
2•Pooja_Tansei•26m ago•0 comments

Sierra Is Acquiring Takeoff

https://sierra.ai/blog/sierra-acquires-takeoff
2•doppp•26m ago•0 comments

MX2 – A next-generation mail protocol sandbox in Python

https://github.com/EgonRuiter/mx2-sandbox
1•HankiePlankie•29m ago•0 comments

Someone Call Tesla a Robotaxi, or SpaceX, Quick

https://www.bloomberg.com/opinion/articles/2026-07-23/tesla-disappoints-on-earnings-and-its-robot...
2•petethomas•33m ago•0 comments

How to Score Goals, Statistically

https://www.datawrapper.de/blog/football-goals-analysis
2•gmays•34m ago•0 comments

Handwritten-edit benchmark: Fable 5 is #1, Opus 4.8 regresses 55% on miscounting

https://dorrit.pairsys.ai/
2•svcrunch•34m ago•1 comments

AI Kill Switch Act: Official Bill Text by Reps. Lieu and Moran (2026)

https://lieu.house.gov/media-center/press-releases/reps-lieu-and-moran-introduce-bill-require-kil...
2•Jimmc414•36m ago•0 comments

What is the shortest paper in the history of mathematics? (2015)

https://hsm.stackexchange.com/questions/3099/what-is-the-shortest-paper-in-the-history-of-mathema...
1•azeemba•38m ago•0 comments

Show HN: Mumble Dictation – local dictation that learns your vocabulary

1•tarafans7•38m ago•0 comments

Agents Found Three RCEs as SYSTEM (and root) on Bing Image Search

https://xbow.com/blog/bing-images-rce-vulnerabilities
3•fedek_•38m ago•0 comments

The Ads on Apple News Continue to Suck, but at Least There Are a Lot of Them

https://daringfireball.net/2026/07/ads_on_apple_news_suck
1•CharlesW•39m ago•0 comments

A coding agent in 5 files, plus a skeptic that catches fake fixes

https://github.com/Saivineeth147/skeptic
1•Vineeth147•40m ago•0 comments

DKSplit – Fast Word Segmentation for Python

https://github.com/ABTdomain/dksplit
1•rzk•40m ago•1 comments

Show HN: Bookshelf – book quotes that appear between Claude Code and Codex turns

https://github.com/Amal-David/bookshelf
3•amaldavid•42m ago•0 comments

New flapping robot swims and flies like a diving bird

https://news.mit.edu/2026/new-flapping-robot-swims-and-flies-like-diving-bird-0709
2•Jimmc414•42m ago•0 comments

Which AI models understand insurance work?

https://www.coveragecat.com/ai/leaderboard
1•botacode•45m ago•0 comments

Solar Open 2: Korea's Sovereign Foundation Model, Built for Agentic Use

https://www.upstage.ai/blog/en/solar-open-2
3•maxloh•46m ago•0 comments

Why care about programming languages

https://ebellani.github.io/blog/2026/why-care-about-programming-languages/
4•rbanffy•47m ago•0 comments