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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/

Who said a tech addict can't be comfortable far from home?

https://a.l3x.in/blog/my-travel-setup/
1•alexfortin•1m ago•0 comments

Did you say AI-mish?

https://medium.com/future-of-work-society-towards-the-quaternary/did-you-say-ai-mish-00ad15529e80
1•amelius•6m ago•0 comments

Devnote – Gittykat

https://akshy.codeberg.page/projects/devnote-gittykat.html
1•yhska•7m ago•0 comments

Scientists Hunting Dark Matter Found Something Strange

https://www.nytimes.com/2026/09/01/science/dark-matter.html
1•JumpCrisscross•7m ago•0 comments

Yes, We're Entering the Era of Artificial General Intelligence

https://www.wsj.com/cio-journal/yes-were-entering-the-era-of-artificial-general-intelligence-d9b0...
2•geox•8m ago•0 comments

Show HN: My portfolio website as a Windows 98 style web OS

https://linkdd.github.io/
2•linkdd•10m ago•0 comments

SSH on the Go

https://bencevans.io/blog/ssh-on-the-go
1•bencevans•11m ago•0 comments

Why NASA keeps sending astronauts to a gas station town in Utah

https://www.sfgate.com/travel/article/hanksville-utah-robbery-kitsch-22414764.php
1•cainxinth•11m ago•0 comments

Prediction markets have become America's new national pastime

https://www.theguardian.com/commentisfree/2026/sep/06/prediction-markets-gambling-american-pastime
2•pseudolus•12m ago•0 comments

L4Re Overview

https://l4re.org/overview/index.html
3•__patchbit__•13m ago•0 comments

3code is becoming a stable workhorse

https://capocasa.dev/3code-is-becoming-a-stable-workhorse
1•rainmaking•13m ago•0 comments

First Responders May Have to Push Tesla's Cybercabs, Turn Front Wheels by Hand

https://gizmodo.com/first-responders-may-have-to-push-teslas-cybercabs-turn-front-wheels-by-hand-...
1•gumby•13m ago•1 comments

Cyberwar Before There Was Cyber: Hacking WWII Electronic Bomb Fuses [pdf]

https://www.fh-campuswien.ac.at/fileadmin/redakteure/News/Dokumente/CL_Gutmann_Slides.pdf
1•Tomte•14m ago•0 comments

LocalXiv – Read ArXiv Papers on Your Mac or Kindle

https://github.com/Akhil-Theerthala/LocalXiv
1•silvervein•14m ago•0 comments

U.S. Hobby Horse Championships – yes it's here finally

https://www.youtube.com/watch?v=X6bltWyyc8s
2•artur_makly•15m ago•0 comments

GPT-6 Astra has autonomously completed Portal

https://twitter.com/cozyblazex/status/2096383114851533097
3•stared•16m ago•0 comments

Show HN: Testate – Git for Database

https://github.com/PT-Perkasa-Pilar-Utama/testate
2•maarut•17m ago•0 comments

The new Go JSON API: twice as fast, or 1.5x slower?

https://lemire.me/blog/2026/08/29/the-new-go-json-api-twice-as-fast-or-1-5x-slower/
1•valyala•19m ago•0 comments

Ancient European Union Public License v1.2

https://aeupl.org/
2•pelagicAustral•19m ago•0 comments

Show HN: I stopped using an LLM gateway and put rate-limits/fallback in-process

https://github.com/LakBud/vernLLM
2•Buddo•20m ago•1 comments

Claude Was Here

https://www.splitbrain.blog/p/claude-was-here
2•hapali•22m ago•0 comments

The Life of a Metric

https://victoriametrics.com/blog/the-life-of-a-metric/index.html
2•valyala•23m ago•1 comments

Notes on Incidents

https://www.seangoedecke.com/notes-on-incidents/
2•gfysfm•27m ago•0 comments

PyCon 2026 part 2 of my presentation: From prompt to Proof

https://www.petrostechchronicles.com/blog/How_I_Built_A_Signed_Audit_Trail
2•Aherontas•27m ago•1 comments

I'm a builder, I can build anything

https://wojsznis.eu/blog/2026/09/05/im-a-builder-i-can-build-anything/
2•_rwo•27m ago•0 comments

Gloria Steinem's Final Essay

https://www.newyorker.com/culture/life-and-letters/gloria-steinems-final-essay
1•JumpCrisscross•28m ago•1 comments

Show HN: Ramanujan – Multi-Model Agent for Research in Computational Maths

https://github.com/AniketWathore/Ramanujan
4•AniketWathore•28m ago•0 comments

Chinese banks purchasing Treasuries after wooing dollar deposits

https://www.reuters.com/world/asia-pacific/china-banks-buy-treasuries-boost-dollar-deposits-sourc...
2•JumpCrisscross•29m ago•0 comments

The pencil case model of creativity

https://dub.uu.nl/en/column/pencil-case-model-creativity
5•jruohonen•31m ago•0 comments

Astra still fails at creating acceptable Rotational Ambigram

2•das_vicky•34m ago•2 comments