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Bloom's two sigma problem (2020)

https://nintil.com/bloom-sigma
8•Tomte•11mo ago

Comments

trane_project•11mo 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/

Canada selected to host new multinational defence bank, sources say

https://www.theglobeandmail.com/business/article-canada-host-multinational-defence-bank/
1•harwoodr•58s ago•0 comments

Scaling Pain of Coding Agent Serving: Lessons from Debugging GLM-5 at Scale

https://z.ai/blog/scaling-pain
1•zixuanlimit•1m ago•0 comments

AI agent deletes company's database in seconds

https://www.msn.com/en-us/news/technology/ai-agent-deletes-company-s-entire-database-in-seconds/a...
1•galaxyLogic•4m ago•0 comments

Ask HN: What would you build on bitesize.io?

1•oan•4m ago•0 comments

Universal Linux Password Recovery Tool (Tweet)

https://twitter.com/junorouse/status/2049531916463063049
1•aizk•4m ago•0 comments

Tech Meta's Reality Labs lost over $4B in first quarter

https://www.cnbc.com/2026/04/29/metas-reality-labs-lost-over-4-billion-in-first-quarter.html
1•ZeidJ•5m ago•0 comments

Show HN: Stream iOS Simulators to a Browser Window

https://github.com/EvanBacon/serve-sim
1•EvanBacon•5m ago•0 comments

MiniRAT: A Go-based macOS RAT delivered via malicious NPM package

https://www.iru.com/blog/minirat
1•ZeidJ•5m ago•0 comments

"Young with Experience" Paradox: Einstein's Twin as a Critique of Modern Hiring

https://zenodo.org/records/19898846
1•Serena_Zayn•9m ago•0 comments

Ask HN: Are there any good open-source chat apps?

2•smj-edison•11m ago•0 comments

"Rat Run" Sudoku Series by Marty Sears

https://logic-masters.de/Raetselportal/Raetsel/zeigen.php?chlang=en&id=000IFI
1•codechicago277•16m ago•0 comments

How dating app algorithms (likely) work in 2026

https://nsokolsky.substack.com/p/how-dating-app-algorithms-likely
1•paulpauper•18m ago•0 comments

The Copernican Model Was More Simple

https://jonasanksher.substack.com/p/the-copernican-model-actually-was
1•paulpauper•18m ago•0 comments

Most Swiss back initiative to cap population at 10M

https://www.reuters.com/world/europe/most-swiss-back-initiative-cap-population-10-million-poll-sh...
1•baal80spam•18m ago•0 comments

Show HN: Claude Code Web UI

https://github.com/alexjbarnes/cockpit
1•recouptreadmill•18m ago•0 comments

Hi, looking for Tester for my TD game

https://testflight.apple.com/join/unh5x9Vh
3•pompeii•21m ago•1 comments

US accuses China of industrial-scale AI model distillation, will share Intel

https://thenextweb.com/news/us-white-house-ai-model-distillation-china-theft
5•gmays•23m ago•2 comments

MCP server that lets agents get human opinions in real-time

https://github.com/impel-intelligence/datapoint-mcp
1•chancemehmu•24m ago•0 comments

'Metajets' could allow future spaceships to be propelled by nothing but light

https://newatlas.com/space-systems/metajets-light-propelled-spaceships/
1•breve•25m ago•0 comments

I benchmarked Claude Code's caveman plugin against "be brief."

https://www.maxtaylor.me/articles/i-benchmarked-caveman-against-two-words
1•max-t-dev•27m ago•0 comments

SYNQ – Give ChatGPT and Claude permanent, local memory

1•Tamatarr•28m ago•0 comments

Agent-Augmented Meetings (2003)

https://link.springer.com/chapter/10.1007/978-1-4419-9200-0_2
2•thatxliner•29m ago•0 comments

Ask HN: Are you OK with DeepSeek and other labs reading your data?

1•davidbjaffe•30m ago•0 comments

First USMC MQ-58 Valkyrie CCA Drones to Arrive in 2029

https://www.twz.com/air/first-usmc-mq-58-valkyrie-cca-drones-to-arrive-in-2029
2•breve•30m ago•0 comments

Why everyone is quietly quitting OpenClaw [video]

https://www.youtube.com/watch?v=urAMvpPhtqo
1•nvahalik•30m ago•0 comments

China Is America's Military Equal Now and in Future Fights, Marine General Warns

https://www.twz.com/sea/china-is-americas-military-equal-now-and-in-any-future-fight-marine-gener...
4•breve•33m ago•0 comments

Mac Studio: Anything > 96GB of RAM Is Unavailable

https://tapbots.social/@paul/116489066337152245
1•doener•33m ago•0 comments

I accidentally made law enforcement shut down their fake honeypot

https://lina.sh/blog/ddos-honeypot
5•fishgoesblub•35m ago•0 comments

Show HN: Free tool to verify legal citations

https://secondseat.ai/verify
1•gabelev•35m ago•0 comments

Stock trading: focus on value, not price

https://smartmoneyguides.quora.com/
1•hennix22•36m ago•0 comments