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Bloom's two sigma problem (2020)

https://nintil.com/bloom-sigma
8•Tomte•10mo ago

Comments

trane_project•10mo 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/

DarkSword Exploit Chain, Unpackaged

https://github.com/DarKDevz/DarKSward
1•lode•23s ago•0 comments

Show HN: Feed.news – A public news feed for anything you care about

https://feed.news/
1•marche101•1m ago•0 comments

American Diner Gothic

https://www.thenewatlantis.com/publications/american-diner-gothic
2•rienbdj•5m ago•0 comments

The Download: reawakening frozen brains, and the AI Hype Index returns

https://www.technologyreview.com/2026/03/25/1134636/the-download-reawakening-frozen-brains-and-th...
1•joozio•8m ago•0 comments

Granola raises $125M at $1.5B valuation

https://techcrunch.com/2026/03/25/granola-raises-125m-hits-1-5b-valuation-as-it-expands-from-meet...
3•doppp•12m ago•0 comments

Show HN: Find Customer Service Phone Numbers

https://dialindex.com
1•yosid•14m ago•0 comments

Two year old Android Bluetooth bug fixed, no more root required for librepods

https://issuetracker.google.com/issues/371713238
1•Lunar5227•15m ago•1 comments

FreeBSD remote DoS vulnerability via TCP – FreeBSD-SA-26:06.tcp

https://www.freebsd.org/security/advisories/FreeBSD-SA-26:06.tcp.asc
1•ggeorg•15m ago•1 comments

Spectre GCR Mac emulator for Atari ST manual (1989)

https://archive.org/details/Spectre_GCR_Manual_Macintosh_emulator_1989
1•TMWNN•17m ago•1 comments

Gerard of Cremona

https://en.wikipedia.org/wiki/Gerard_of_Cremona
1•teleforce•20m ago•0 comments

Rich Content AI Chat

https://99helpers.com/tools/ai-chat
1•nickk81•22m ago•1 comments

Accidental $70k Google Pixel Lock Screen Bypass

https://bugs.xdavidhu.me/google/2022/11/10/accidental-70k-google-pixel-lock-screen-bypass/
1•Jacobinski•25m ago•0 comments

Porting Go's io package to C

https://antonz.org/porting-go-io/
2•ingve•28m ago•1 comments

Skeleton of Three Musketeers' d'Artagnan may have been found under Dutch church

https://news.sky.com/story/skeleton-of-three-musketeers-dartagnan-may-have-been-found-under-dutch...
2•austinallegro•32m ago•0 comments

Wittgenstein's Contribution to Philosophy [video]

https://www.youtube.com/watch?v=sVKWlEq09tQ
1•daverol•35m ago•0 comments

Honda and Sony Scrap EVs

https://www.ft.com/content/b85869e1-0f69-4ab3-aa30-1d63d60ee3c9
1•mnming•37m ago•0 comments

macOS 26.4 Introduces New Security Feature for Terminal Commands

https://www.macrumors.com/2026/03/25/macos-26-4-terminal-security-feature/
1•tosh•37m ago•0 comments

70% of new software engineering papers on ArXiv are LLM related

https://shape-of-code.com/2026/03/22/70-of-new-software-engineering-papers-on-arxiv-are-llm-related/
1•jruohonen•39m ago•1 comments

The Sensor Debate: Vision, Lidar, and the Path to Real Autonomy

https://www.nuro.ai/blog/the-sensor-debate-vision-lidar
1•Jadrago•42m ago•0 comments

Crypto regime detection API: 10 weighted signals, 9 data sources

https://getregime.com
1•GunnarThor•43m ago•0 comments

Swift 6.3 Released

https://www.swift.org/blog/swift-6.3-released/
4•ingve•45m ago•0 comments

Solved Game

https://en.wikipedia.org/wiki/Solved_game
2•thunderbong•45m ago•0 comments

Is X down?

3•avnsv•50m ago•6 comments

Building apps after a 9-to-5 without burning out

https://bacist.com/avoid-burnout/
2•baCist•52m ago•0 comments

Polymarket affiliates are spreading misinformation on X

https://www.cjr.org/tow_center/polymarket-affiliates-are-spreading-misinformation-on-x.php
1•giuliomagnifico•52m ago•0 comments

Show HN: I built a free alternative to Screen Studio and Focusee

https://rookieclip.com/
1•this-is-shreya•53m ago•1 comments

Architecture Is Not a Blueprint. It's a Set of Decisions

https://scottmillett.medium.com/architecture-is-not-a-blueprint-its-a-set-of-decisions-61c4692f5222
1•kiyanwang•53m ago•0 comments

Show HN: Book Grounded AI Learning

https://teach-me.replit.app/
1•techypicky•55m ago•1 comments

Duso

https://duso.rocks/
2•kentbrew•55m ago•1 comments

Show HN: I built a selfhosted Wanderlog alternative with real-time collaboration

https://github.com/mauriceboe/NOMAD
1•mauriceboe•57m ago•0 comments