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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/

Show HN: Three philosophers vote on your questions

https://sage-verdict.vercel.app/
1•notkant•2m ago•0 comments

Order to limit Starshield for Ukraine came from inside White House, sources say

https://www.yahoo.com/news/articles/exclusive-order-limit-starshield-ukraine-230733575.html
2•pseudolus•5m ago•1 comments

GHC 9.14.1 is now bootstrappable from C via Hugs and MicroHs

https://discourse.haskell.org/t/what-s-needed-to-bootstrap-ghc-with-hugs/6205?page=5
1•internet_points•5m ago•0 comments

Where Your Data Lives Matters: EU Data Residency and Why We Run in Europe-West4

https://docent.digital/blog/eu-data-residency
2•hamedniavand•5m ago•0 comments

We reverse-engineered Blender and made it open source. Introducing BlenderCraft

https://reddit.com/r/blender/comments/1x79j0p/we_did_it_we_reverseengineered_blender_with_ai/
2•haunter•8m ago•0 comments

Creatine may help shield the brain from damage linked to gut inflammation

https://medicalxpress.com/news/2026-10-popular-sports-supplement-shield-brain.html
1•pseudolus•8m ago•0 comments

Writing Books with AI: How Do Manually Written Books Stay Relevant?

https://www.ssp.sh/brain/writing-books-with-ai-study/
2•zazuke•8m ago•0 comments

CVE-2026-99999: Linux IPv4: validate checksum_start before completing checksum

https://app.opencve.io/cve/CVE-2026-99999
1•rwmj•9m ago•0 comments

Pedantle – a game to find the words in a Wikipedia page

https://pedantle.certitudes.org/
1•thinkingemote•12m ago•0 comments

Unified Harness Protocol

https://unifiedharnessprotocol.org/
1•ilreb•13m ago•0 comments

The Case for Lowercase

https://www.wired.com/story/the-case-for-lowercase/
2•FinnLobsien•15m ago•1 comments

The People's Graphic Design Archive

https://peoplesgdarchive.org/
1•amar-laksh•19m ago•0 comments

Geoffrey Hinton: 'We're creating alien beings. I'm willing to choose humans'

https://www.theguardian.com/us-news/2026/oct/13/geoffrey-hinton-trump-ai-tech
5•Michelangelo11•20m ago•0 comments

C64-hw-SIM simulates the motherboard of the Commodore 64

https://github.com/antirez/c64-hw-simulator
2•sohkamyung•21m ago•0 comments

Python 3.14 Subinterpreters vs. Celery. Here is why my RAM usage dropped by 48%

https://pypi.org/project/solid-jobs-py/
2•nicolasva•21m ago•0 comments

Ask HN: Has anyone started using OpenAI Agents API

1•pitifulsurround•21m ago•0 comments

Behind the Scenes of Paper Writing

https://www.sophielwang.com/blog/paper-writing
2•sharma-arjun•23m ago•0 comments

Japan mistakenly issues warning for magnitude 9.9 earthquake

https://bnonews.com/index.php/2026/10/japan-mistakenly-issues-warning-for-magnitude-9-9-earthquake/
3•Shank•25m ago•1 comments

AI Safety Is Not a Corporate Plot

https://www.astralcodexten.com/p/ai-safety-is-not-a-corporate-plot
1•Michelangelo11•26m ago•0 comments

Unihertz won't release the GPL'd kernel source, so I ported LineageOS anyway

https://osquera.com/blog/unihertz-jellystar-lineageos-port/
3•osquera•31m ago•1 comments

Porn showing choking or incest to be banned in UK from early November

https://www.bbc.co.uk/news/articles/cmpqgepejr2ro
2•b800h•31m ago•3 comments

Neophyte combines capture and browser automation to capture product flows

https://neophyte.run/
1•cruink•31m ago•1 comments

Studio.Design Was Breached

https://violet353984.studio.site/updates/unauthorized-access-2026-10
1•amanverasia•32m ago•0 comments

Reverse Engineering Hong Kong's New Traffic Lights

https://thereallo.dev/blog/reverse-engineering-hong-kong-traffic-lights
1•tnychn•34m ago•0 comments

Ask HN: What world do you want to live in?

1•dfps•35m ago•1 comments

I recreated the Vision Pro palm-flip gesture on Apple Watch

https://github.com/Ag3497120/SpatialCue
1•kofuudai•35m ago•0 comments

Ledger Unveils $899 Smartphone After $90M Crypto Theft

https://www.bloomberg.com/news/articles/2026-10-15/ledger-unveils-899-smartphone-like-device-afte...
1•SXX•35m ago•0 comments

Streaming a coding agent's UI in Flutter: what broke and how we fixed it

https://getpullrequest.com/blogs/streaming-agent-ui-in-flutter
1•narayanahari•39m ago•0 comments

Quantum Encoding Agents

https://arxiv.org/abs/2609.31902
1•greekanalyst•47m ago•0 comments

LibreNT – how AI slop infects Windows clean-room engineering

https://github.com/ahmedarif193/LiberNT
2•AIslopsucks•49m ago•1 comments