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Bloom's two sigma problem (2020)

https://nintil.com/bloom-sigma
8•Tomte•12mo ago

Comments

trane_project•12mo 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/

Coding agents run on terminal memories. Bottle yours

https://visr.dev/changelog/bottle-terminal-memories
1•sourishkrout•25s ago•0 comments

US decennial labor flows and economic opportunity, 1910–2040

https://www.pnas.org/doi/10.1073/pnas.2601716123
1•paulpauper•38s ago•0 comments

HG Wells Interviews Stalin (1934)

https://www.newstatesman.com/long-reads/1934/10/h-g-wells-it-seems-me-i-am-more-left-you-mr-stalin
1•yubblegum•59s ago•0 comments

The AIs Are "One of Us"

https://marginalrevolution.com/marginalrevolution/2026/05/the-ais-are-one-of-us-now.html
1•paulpauper•1m ago•0 comments

Minnesota Becomes First State to Ban Prediction Markets

https://www.nytimes.com/2026/05/19/us/minnesota-prediction-market-ban.html
1•paulpauper•2m ago•0 comments

Show HN: Coherence – drift detector for AI-driven repos

https://github.com/fireharp/coherence
1•fireharp•2m ago•0 comments

Show HN: Online Jigsaw Puzzle: drag&drop an image or use a provided sample

https://abionic.itch.io/jigsaw-puzzler
1•abionic•3m ago•0 comments

Bitcoin Value Overflow Incident (CVE-2010-5139)

https://www.learnbitcoin.com/rabbit-hole/inflation-bug-postmortem
1•granya•5m ago•0 comments

The AI has come for my code

https://boston.conman.org/2026/05/19.1
1•speckx•6m ago•0 comments

Karpathy's autoresearch, 50 DPO experiments, 300 human judges

https://huggingface.co/blog/ProlificAI/autoresearch-hitl-experiment
1•bradfeh•6m ago•0 comments

AVX 512 will be the future (2022)

https://www.realworldtech.com/forum/?threadid=209249&curpostid=209596
1•tosh•7m ago•0 comments

Securing Your Gemini and Google API Keys

https://cloud.google.com/blog/topics/developers-practitioners/api-keys-are-open-secrets
1•minherz•7m ago•0 comments

Eli Lilly's New Weight-Loss Treatment Shows Promising Results

https://www.wsj.com/health/pharma/eli-lillys-new-weight-loss-treatment-shows-promising-results-ca...
1•brandonb•9m ago•0 comments

Web Serial Support in Firefox

https://hacks.mozilla.org/2026/05/web-serial-support-in-firefox/
2•tech234a•10m ago•1 comments

World Genesis: Autonomous Agent Civilization Simulator

https://github.com/GeoLambdaAI/world-genesis
1•Gtombri•11m ago•0 comments

Show HN: Synrix: hardware-verified memory routing for edge AI agents

https://github.com/AstronomikalOne/synrix-demo
1•Ryan_Synrix•11m ago•0 comments

Starbucks scraps AI inventory tool across North America

https://www.reuters.com/business/starbucks-scraps-ai-inventory-tool-across-north-america-2026-05-21/
4•louiereederson•13m ago•0 comments

Discover Meko: The Data Infrastructure for Agents That Work and Learn Together

https://www.yugabyte.com/blog/meko-data-infrastructure-for-agents-that-work-and-learn-together/
1•mooreds•14m ago•0 comments

Could Universal GLP-1 Drugs End the Obesity Epidemic?

https://www.cremieux.xyz/p/could-universal-glp-1-drugs-end-the
1•brandonb•14m ago•0 comments

SpaceX IPO filing lays bare losses and Musk control as it stakes future on AI

https://www.reuters.com/legal/transactional/bound-mars-elon-musks-spacex-unveils-filing-blockbust...
3•1vuio0pswjnm7•14m ago•0 comments

Pope Leo launches an AI commission days before he releases a papal letter

https://fortune.com/2026/05/18/pope-leo-ai-commission-papal-letter-anthropic-co-founder-christoph...
2•1vuio0pswjnm7•17m ago•0 comments

22% Layoff at ClickUp

https://twitter.com/dj_curfew/status/2057522382315929802
2•jscheel•17m ago•1 comments

The International Space Station is leaking again

https://arstechnica.com/space/2026/05/uh-oh-the-international-space-station-is-leaking-again/
1•LorenDB•20m ago•0 comments

Blog ran on Ubuntu 16.04 for 10 years. I migrated it to FreeBSD

https://crocidb.com/post/this-blog-ran-on-ubuntu-16-04-for-10-years-i-migrated-it-to-freebsd/
3•speckx•21m ago•0 comments

Movesia – Control the Unity Editor with Plain English Commands

https://movesia.com
1•DexOmg•23m ago•0 comments

Distribution Fine Tuning: A post-training step to make models write better

https://dft.rosmine.ai/
1•sgt•24m ago•0 comments

Volo: Flight tracker built for group travel, delays, gates, and real connections

https://apps.apple.com/us/app/volo-flight-tracking/id6756634383
1•darpanypatel1•25m ago•0 comments

Built a subscription tracker that uses email forwarding instead of bank linking

https://www.subalert.org
1•momolii•26m ago•1 comments

Show HN: AI readiness toolkit: AI two-minute CODE maturity check

https://github.com/bjcoombs/ai-native-toolkit
1•ben30•27m ago•0 comments

Schlitz beer ending production after 177 years

https://www.boston25news.com/news/trending/schlitz-beer-ending-production-after-177-years/ABPDGCI...
2•1vuio0pswjnm7•27m ago•0 comments