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Bloom's two sigma problem (2020)

https://nintil.com/bloom-sigma
8•Tomte•6mo ago

Comments

trane_project•6mo 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/

Why Junior Developers Shouldn't Generate Production Code with AI

https://tskulbru.dev/posts/ai-junior-developers-learning-trap/
1•fiskeben•26s ago•0 comments

C2PM(Color to Pixel Map)

1•Yukesh_J•4m ago•0 comments

RunOS Is Now Open to Everyone

https://runos.com/blog/runos-open-to-everyone.html
1•tylerreed•5m ago•0 comments

Show HN: Guftaguu – Anonymous Chat and Real-Time Games (No Login Required)

https://guftaguu.vercel.app
1•SeeYouInHelL•7m ago•0 comments

The making of a monster (that doesn't always exist)

https://writesobereditsober.substack.com/p/the-making-of-a-monster-that-doesnt
1•binning•8m ago•0 comments

I'm Glad My Mom Died

https://en.wikipedia.org/wiki/I%27m_Glad_My_Mom_Died
1•chistev•8m ago•0 comments

Rivian unveils its own in-house RAP1 AI chip and ACM3 self-driving platform

https://www.tomshardware.com/tech-industry/rivian-unveils-its-own-in-house-rap1-ai-chip-and-acm3-...
1•cebert•8m ago•0 comments

'Already had a profound effect': parents react to Australia's social media ban

https://www.theguardian.com/australia-news/ng-interactive/2025/dec/10/parents-react-to-australias...
1•binning•10m ago•0 comments

The Story of Two Monks and a Woman (On Letting Go)

https://www.craftdeology.com/the-story-of-the-two-monks-and-a-woman-on-letting-go/
1•thunderbong•10m ago•0 comments

Sexual predators target girls in mixed changing rooms

https://www.telegraph.co.uk/news/2025/12/09/sexual-predators-target-girls-mixed-changing-rooms-wr...
1•binning•13m ago•0 comments

Tibetan Activists Say China Has Detained Protesters Who Staged Act of Defiance

https://www.wsj.com/world/asia/tibetan-activists-say-china-has-detained-protesters-who-staged-rar...
1•JumpCrisscross•14m ago•0 comments

Just: A Command Runner

https://lwn.net/Articles/1047715/
1•sohkamyung•14m ago•0 comments

In 1844, Chess Was Online

https://spectrum.ieee.org/telegraph-chess
2•sohkamyung•16m ago•0 comments

How to Decide What's Right for Your Business in 2026

1•Olivia8•19m ago•0 comments

Nature's many attempts to evolve a Nostr

https://newsletter.squishy.computer/p/natures-many-attempts-to-evolve-a
1•birdculture•20m ago•0 comments

Show HN: Made a quick tool to test controller stick sensitivities and curves

https://gamepadtuner.com
1•ridwanc•21m ago•0 comments

Database Anonymiser

https://github.com/mnnayeck/db-anonymiser
1•nmnayeck•21m ago•1 comments

Ask HN: ArXiv Endorsement as Independent Researcher

1•7777777phil•23m ago•0 comments

CodeClash

https://codeclash.ai/
1•falcor84•25m ago•0 comments

Show HN: LogDeck – Container management and logs viewer for self-hosters

https://github.com/AmoabaKelvin/logdeck
1•KelvinAmoaba•27m ago•0 comments

How to Identify AI-Written Web Fiction

https://recordcrash.substack.com/p/how-to-identify-ai-written-web-fiction
3•networked•28m ago•1 comments

What happens when the coding becomes the least interesting part of the work

https://obie.medium.com/what-happens-when-the-coding-becomes-the-least-interesting-part-of-the-wo...
2•avivby•29m ago•0 comments

How to Launch on Hacker News (2012) [video]

https://www.youtube.com/watch?v=KjbQU6LmZzQ
2•ensocode•33m ago•0 comments

Is it just me or is fedora becoming mainstream

https://old.reddit.com/r/Fedora/comments/1pkk5k8/is_it_just_me_or_is_fedora_becoming_mainstream/
2•sipofwater•37m ago•0 comments

Programmer Network Platform

https://programmer.network
1•agjs•38m ago•0 comments

Installing Every NixOS Package

https://unnamed.website/posts/installing-every-nixos-package/
1•OuterVale•42m ago•0 comments

Ask HN: What is Fullstack Engineering?

1•grandimam•45m ago•1 comments

Algorithms do widen the divide: Social media feeds shape political polarization

https://english.elpais.com/technology/2025-11-27/algorithms-do-widen-the-divide-social-media-feed...
2•PaulHoule•46m ago•0 comments

Atlassian Security Bulletin – December 11 2025

https://confluence.atlassian.com/security/security-bulletin-december-11-2025-1689616574.html
1•gjvc•48m ago•0 comments

Southeast Asia seeks its place in space

https://www.technologyreview.com/2025/12/12/1129235/dispatch-thai-space-expo-southeast-asia-explo...
1•fleahunter•50m ago•0 comments