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Bloom's two sigma problem (2020)

https://nintil.com/bloom-sigma
8•Tomte•9mo ago

Comments

trane_project•9mo 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/

Please, please, please stop using passkeys for encrypting user data

https://blog.timcappalli.me/p/passkeys-prf-warning/
1•zdw•33s ago•0 comments

Book Review: 'A World Appears,' by Michael Pollan

https://www.nytimes.com/2026/02/27/books/review/a-world-appears-michael-pollan.html
1•lxm•2m ago•0 comments

Jemini Deep Research

https://twitter.com/jmailarchive/status/2027516806806835548
2•jbegley•4m ago•0 comments

Ancient Killer Is Rapidly Gaining Resistance to Antibiotics, Scientists Warn

https://www.sciencealert.com/ancient-killer-is-rapidly-gaining-resistance-to-antibiotics-scientis...
1•thelastgallon•4m ago•0 comments

Burger King is testing AI headsets that will know if employees say 'welcome'

https://abc7.com/post/burger-king-is-testing-ai-headsets-will-know-employees-say-welcome-thank/18...
1•lxm•5m ago•0 comments

Elementary OS 8.1.1 Available Now

https://blog.elementary.io/os-8-1-1-available-now/
1•todsacerdoti•6m ago•0 comments

The Rise and Fall of a 3-D Printing Empire

https://www.nytimes.com/2026/02/27/business/3d-printing-industry.html
1•thelastgallon•9m ago•0 comments

Easel: What's New? (Feb 2026)

https://easel.games/blog/2026-feb-update
1•BSTRhino•11m ago•1 comments

OpenAI Executes Agreement with Dept of War for Classified Environment Deployment

https://twitter.com/sama/status/2027578652477821175
7•eoskx•13m ago•1 comments

I Trained My Own AI It Beat ChatGPT [video]

https://www.youtube.com/watch?v=aV4j5pXLP-I
1•yomismoaqui•13m ago•0 comments

"Tonight, we reached an agreement with the Dept. of War to deploy our models"

https://twitter.com/sama/status/2027578508042723599
6•davidbarker•14m ago•0 comments

Liberland

https://en.wikipedia.org/wiki/Liberland
1•pinkmuffinere•15m ago•0 comments

Bootc and OSTree: Modernizing Linux System Deployment

https://a-cup-of.coffee/blog/ostree-bootc/
1•mrtedbear•16m ago•0 comments

Kola Superdeep Borehole

https://www.davidsmythe.org/kola/kola.htm
1•DriftRegion•17m ago•0 comments

Rtk – reduce Claude Code token usage

https://github.com/rtk-ai/rtk
1•RyanShook•19m ago•0 comments

A "Rose" Made of Galaxies Highlights Hubble's 21st Anniversary

https://science.nasa.gov/asset/hubble/a-rose-made-of-galaxies-highlights-hubbles-21st-anniversary/
1•tzury•19m ago•0 comments

Show HN: Local memory for AI assistants – zero-cost Telegram history search

https://github.com/tituss-bit/openclaw-local-memory
1•tituss-bit•20m ago•0 comments

Deep Learning: Our Year 1990-1991

https://people.idsia.ch/~juergen/blog.html
1•vinhnx•20m ago•0 comments

Deep Learning: Our Year 1990-1991

https://arxiv.org/abs/2005.05744
1•vinhnx•21m ago•0 comments

WhatsApp Encryption, a Lawsuit, and a Lot of Noise

https://blog.cryptographyengineering.com/2026/02/02/whatsapp-encryption-a-lawsuit-and-a-lot-of-no...
1•Betelbuddy•21m ago•0 comments

Croatia declared free of landmines after 31 years

https://glashrvatske.hrt.hr/en/domestic/croatia-declared-free-of-landmines-after-31-years-12593533
3•toomuchtodo•23m ago•1 comments

I built the first multiplayer prompt-hacking game: Agent Has A Secret

https://agenthasasecret.com/
1•arm32•24m ago•1 comments

Coding Agents Wrote a Chess Engine in Pure TeX

https://blog.mathieuacher.com/TeXCCChessEngine/
1•azhenley•26m ago•0 comments

Building a Minimal Transformer for 10-digit Addition

https://alexlitzenberger.com/blog/post.html?post=/building_a_minimal_transformer_for_10_digit_add...
2•alexlitz•27m ago•0 comments

How Codex Is Built

https://newsletter.pragmaticengineer.com/p/how-codex-is-built
2•vinhnx•29m ago•0 comments

We don't have to have unsupervised killer robots

https://www.theverge.com/ai-artificial-intelligence/885963/anthropic-dod-pentagon-tech-workers-ai...
4•layer8•31m ago•0 comments

Nintendo adds spyware to re-release of Game Boy Advance ROM from 2004

https://xcancel.com/meatball_132/status/2027448890438439278
2•Lammy•34m ago•0 comments

Anthropic says it will challenge Pentagon supply chain risk designation in court

https://www.reuters.com/world/us/anthropic-says-it-will-challenge-pentagons-supply-chain-risk-des...
29•Jimmc414•35m ago•0 comments

The Mini PET 40/80 (2022)

http://blog.tynemouthsoftware.co.uk/2022/02/the-mini-pet-4080.html
2•erickhill•36m ago•0 comments

Sam Altman's 'Human Verification' Startup Leans on Consumer Brands

https://www.wsj.com/cmo-today/sam-altmans-human-verification-startup-leans-on-consumer-brands-787...
1•petethomas•41m ago•0 comments