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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/

Show HN: Resilient, A composable async resilience toolkit for rust

https://github.com/resilient-rs/resilient
1•yofabr•46s ago•0 comments

Extensy – turn any prompt into a monetizable browser extension in 2 minutes

https://extensy.dev/
4•truetemir•3m ago•1 comments

Unprecedented 19 Day Type IV Radio Burst as a Corotating Electron Reservoir

https://iopscience.iop.org/article/10.3847/2041-8213/ae5537
1•fodmap•8m ago•0 comments

Social Media Zero (2017)

https://leejo.github.io/2017/09/27/social_media_zero/
2•chistev•9m ago•0 comments

The US space enterprise is desperately waiting for Starship–will it deliver?

https://arstechnica.com/space/2026/05/the-us-space-enterprise-is-desperately-waiting-for-starship...
1•rbanffy•9m ago•0 comments

I've created a platform where sites get paid not to show ads

https://medium.com/@laurynas.karvelis_95228/is-monetising-your-site-possible-without-serving-ads-...
1•luggage_bazooka•11m ago•0 comments

Elon Musk Loses OpenAI Lawsuit After Jury Finds It Was Filed Too Late

https://firethering.com/elon-musk-openai-lawsuit-lost/
1•steveharing1•13m ago•1 comments

I built a Slack client because:wave: was lagging

https://grant.dev/posts/built-a-slack-client
1•figmert•14m ago•0 comments

AI-driven development – It's a spectrum

https://avohq.io/blog/ai-driven-development-it-s-a-spectrum
1•adrianthedev•15m ago•0 comments

List of price of medieval items (2006)

https://medieval.ucdavis.edu/120D/Money.html
1•downbad_•18m ago•0 comments

Ask HN: How to enforce engineers to understand the code they are shipping

1•hchua•18m ago•0 comments

Why Education Startups Do Not Succeed (2011)

https://avichal.com/2011/10/07/why-education-startups-do-not-succeed/
1•downbad_•19m ago•0 comments

Show HN: Cervantes yet Another HN Reader

https://github.com/nhdez/cervantes
2•pelagicAustral•20m ago•0 comments

The highest ROI activity in AI isn't on your screen

https://layerx.xyz/blog/sim-recap
3•supermalvo•26m ago•0 comments

Hold-to-talk voice input for Pi Coding Agent

https://github.com/codexstar69/pi-listen
1•ankitg12•26m ago•0 comments

Department of Energy ends ALARA

https://nationalinterest.org/blog/energy-world/the-department-of-energy-ends-alara
1•leonidasrup•27m ago•0 comments

The Economist prepares for a two‑track Web: one for humans one for AI agents

https://digiday.com/media/the-economist-prepares-for-a-two-track-internet-one-for-humans-and-one-...
2•thm•33m ago•1 comments

Misconceptions about the Unix Philosophy

https://posixcafe.org/blogs/2024/01/05/0/
1•signa11•34m ago•0 comments

Badger Badger Badger Video Officially Preserved by British Film Institute

https://petapixel.com/2026/05/18/badger-badger-badger-video-officially-preserved-by-british-film-...
2•petecooper•35m ago•0 comments

How Remote Work Has Grown – and Shrunk – Since Covid

https://arilamstein.com/blog/2026/05/18/how-remote-work-has-grown-and-shrunk-since-covid/
2•lumpa•36m ago•0 comments

How to Build Multi-Asset Backtests for Real Trading Strategies

https://medium.com/@DolphinDB_Inc/how-to-build-multi-asset-backtests-for-real-trading-strategies-...
2•CrazyTomato•38m ago•1 comments

Access the properties within Markdown files

https://github.com/thiswillbeyourgithub/LogseqMarkdownParser
1•ankitg12•38m ago•0 comments

Solal

https://news.ycombinator.com/submit
1•speedcleme•39m ago•1 comments

Crypto Jesus tried to sell me an AI religion

https://oneonlyvan.substack.com/p/that-time-crypto-jesus-tried-to-sell
1•5tnvan•40m ago•1 comments

America's Data Center Count Is About to Nearly Double

https://www.apollo.com/wealth/the-daily-spark/americas-data-center-count-is-already-near-double
1•akyuu•40m ago•0 comments

US Government Finances Are Not Ready for a Recession

https://www.apollo.com/wealth/the-daily-spark/us-government-finances-are-not-ready-for-a-recession
1•akyuu•40m ago•0 comments

Stop paying $360/year to access your own email history

https://mailvaulty.com
1•khaledsabae•41m ago•0 comments

Amazon's Singapore retreat: Why its US playbook failed in Southeast Asia

https://www.channelnewsasia.com/business/amazon-singapore-end-local-fulfilment-ecommerce-6121221
2•xbmcuser•42m ago•1 comments

eXo MCP server: expose workplace tools to AI agents with OAuth

https://www.exoplatform.com/blog/introducing-exo-mcp-server-secure-ai-integrations-digital-workpl...
2•jaouanebrahim•46m ago•0 comments

Show HN: AI Coding Engineers that evolve with you

https://hatchery.shelter41.com/
1•DSpider•48m ago•0 comments