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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/

Ask HN: Debugging failure in large interconnected back end systems

1•Ifedayo_s•53s ago•0 comments

Quantum Information as Everything

https://vlatkovedral.substack.com/p/quantum-information-as-everything
1•ljosifov•3m ago•0 comments

Programmable artificial RNA condensates in mammalian cells

https://www.nature.com/articles/s41565-026-02164-7
1•PaulHoule•3m ago•0 comments

I care so much about energy per token

https://ziraph.com/blog/energy-per-token-vanity-sanity-reality
1•ABS•4m ago•0 comments

The Read Model Zoo: Projections Beyond Tables

https://docs.eventsourcingdb.io/blog/2026/06/08/the-read-model-zoo-projections-beyond-tables/
1•goloroden•5m ago•0 comments

Ideogram 4.0 Technical Details: Open model at the forefront of design

https://ideogram.ai/blog/ideogram-4.0/
1•simonpure•5m ago•0 comments

No Model Will Save Us: Pope Leo, the Miserostat, and AI's Woke Coders

https://www.wmbriggs.com/post/61049/
2•B1FF_PSUVM•6m ago•0 comments

Billions spent and hypothetical returns: the AI boom explained with six charts

https://www.theguardian.com/technology/2026/jun/07/billions-spent-hypothetical-returns-the-ai-boo...
4•billybuckwheat•6m ago•0 comments

AI Companion App

1•adminOfbaratrum•7m ago•0 comments

ChatGPT app hits 1B monthly active users in record time

https://www.reuters.com/technology/chatgpt-app-hits-1-billion-monthly-active-users-record-time-da...
1•geox•9m ago•0 comments

Why isn't the U.S. better at soccer?

https://www.natesilver.net/p/why-isnt-the-us-better-at-soccer
6•7777777phil•13m ago•0 comments

Show HN: CodeSage Pro – an AI copilot that reads the problem on the page

https://chromewebstore.google.com/detail/codesage-pro-—-universal/cbkkghdedpjamcicmnfpihehmgjemmhi
1•rsingh867•14m ago•0 comments

When robots take over jobs, who decides what they do?

https://lorenzopieri.com/robotic_commons/
2•lorepieri•15m ago•0 comments

Ask HN: What is happening with the Meta Ads dashboard?

1•ramon156•18m ago•0 comments

Iran says staff blocked from entering US after players given World Cup visas

https://www.bbc.com/news/articles/cy8286nqz87o
2•root-parent•19m ago•0 comments

After empty promises, string theory finds new uses

https://www.science.org/content/article/after-empty-promises-string-theory-finds-new-uses
2•tcp_handshaker•21m ago•0 comments

Pete Hegseth's D-Day speech on immigration condemned as 'grotesque stupidity'

https://www.theguardian.com/world/2026/jun/07/pete-hegseth-d-day-speech-immigration-grotesque-stu...
7•tcp_handshaker•23m ago•1 comments

Sorry Marc, it's just not that big

https://www.ft.com/content/dcc7c956-858c-4fed-9820-f87f73f7bf8d
3•tcp_handshaker•23m ago•1 comments

I thought journaling app users wanted more features. Turns out they wanted trust

https://www.indiehackers.com/post/i-thought-journaling-app-users-wanted-more-features-turns-out-t...
2•rozvibe•26m ago•1 comments

All existing World Cup predictor apps were buggy, so I've built a cool one

https://kibic.co
2•olekskw•26m ago•1 comments

The Illusion of Invulnerability in Cybersecurity

https://zeltser.com/illusion-of-invulnerability
3•walterbell•26m ago•0 comments

Author of Home Office report reveals attempts to compromise him

https://www.theguardian.com/uk-news/2026/jun/07/home-office-china-report-honey-traps-compromise-a...
4•ilamont•27m ago•0 comments

Show HN: AudioTap, record calls, transcribe and diarize locally

https://audiotap.app/
1•AquiGorka•27m ago•1 comments

Bird flu, screwworm monitoring among foreign aid programs killed by DOGE

https://www.agri-pulse.com/articles/22636-bird-flu-screwworm-monitoring-among-foreign-aid-program...
1•JumpCrisscross•28m ago•0 comments

Thi.ng – open-source building blocks for computational design and art

https://thi.ng
1•nmstoker•29m ago•0 comments

Using Jai's Unique and Powerful Compiler for Typesafe Units

https://www.forrestthewoods.com/blog/using-jais-unique-and-powerful-compiler-for-typesafe-units/
1•erenon•31m ago•0 comments

Building Glass for the Web

https://aave.com/design/building-glass-for-the-web
1•bjelkeman-again•33m ago•0 comments

Parallel Lives: A Local-Realistic Interpretation of "Nonlocal" Boxes

https://www.mdpi.com/1099-4300/21/1/87
2•anotherpaulg•35m ago•1 comments

Anatomy of a Restaurant in 2026

https://danoregan.substack.com/p/where-the-money-goes-anatomy-of-a-45a
1•dylancollins•36m ago•1 comments

Show HN: Omni – airgapped macOS multimodal search over local files

https://github.com/hanxiao/omni-macos/
1•artex_xh•38m ago•0 comments