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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/

Learning from Structure: Discord's Entity-Relationship Embeddings

https://discord.com/blog/learning-from-structure-discords-entity-relationship-embeddings
1•throwaway314155•3m ago•0 comments

An Elephant Is Blind Without the Hairs on Its Trunk

https://www.nytimes.com/2026/02/12/science/elephant-whiskers.html
1•bookofjoe•4m ago•1 comments

RFC Explorer – Explore over 9000 RFCs

https://rfcexplorer.net/
1•xillb•4m ago•0 comments

We Need to Stop Asking "Is This Better Than That"

https://doppelgangerdev.com/docs/software-isn-t-a-competition-it-s-a-map-of-our-frustrations
1•asernasr•8m ago•1 comments

Show HN: Built a news aggregator that collect AI news around the world

https://vvsearch.com/workspace/news-terminal
1•raugen•12m ago•0 comments

Will artificial snow save the ski industry in the long run, or curse it?

https://theconversation.com/will-artificial-snow-save-the-ski-industry-in-the-long-run-or-curse-i...
1•PaulHoule•12m ago•0 comments

Finding 100 Kernel Bugs Using Agent Swarms

https://ydinkin.substack.com/p/200-kernel-bugs-in-30-days
1•itkeman•12m ago•0 comments

Show HN: I made a 4D version of DOOM

https://hyperhell.itch.io/hyperhell
1•chronolitus•13m ago•0 comments

Tim Cook Warned by CIA That China Could Move on Taiwan by 2027

https://www.macrumors.com/2026/02/24/tim-cook-warned-by-cia-china-taiwan-2027/
3•mgh2•15m ago•1 comments

Show HN: Declare AI – open standard for AI content disclosure

https://declare-ai.github.io/declare-ai/declare-ai-devteam.html
1•BetterToBest•15m ago•1 comments

Apple Set a European iPhone Sales Record Last Year

https://www.macrumors.com/2026/02/24/apple-european-iphone-sales-record-2025/
1•mgh2•15m ago•0 comments

Show HN: Limits – Control layer for AI agents that take real actions

https://limits.dev
6•thesvp•15m ago•0 comments

Build a free job-winning resume and cover letter in minutes

https://resumecv.pro
1•pivlu•18m ago•1 comments

Data center outlook: half of 2026 pipeline may not materialize

https://www.sightlineclimate.com/research/data-center-outlook
1•toomuchtodo•20m ago•0 comments

Western Digital Sold Out All 2026 Hard Drive Production as AI Centers Scramble

https://247wallst.com/investing/2026/02/18/western-digital-sold-out-all-2026-hard-drive-productio...
1•vmg12•20m ago•0 comments

Being a Luddite Is Cool, but Have You Seen the Tapestries New Looms Are Making?

https://www.mcsweeneys.net/articles/being-a-luddite-is-cool-and-all-but-have-you-seen-the-hilario...
1•stmw•24m ago•0 comments

Show HN: Claude Automation Toolkit – 6 Python scripts for AI task automation

https://github.com/indoor47/summarize-docs
1•adamrunboy•25m ago•0 comments

The Weapons of Stargate [video]

https://www.youtube.com/watch?v=gMt6pzC_0dI
2•Kye•30m ago•0 comments

Capybara: A Unified Visual Creation Model

https://github.com/xgen-universe/Capybara
2•modinfo•31m ago•1 comments

secrets

https://github.com/umputun/secrets
1•indigodaddy•31m ago•0 comments

Programming is dead: a letter to junior and mid-level engineers

https://medium.com/@dbounds/programming-is-dead-a-letter-to-junior-and-mid-level-engineers-5b630f...
4•RobSpectre•31m ago•1 comments

Intelligence Yield: Efficiency of Frontier Models on METR Tasks

https://bmdragos.github.io/intelligence-yield/
2•gnopercept•33m ago•1 comments

Show HN: NeoShift BI – Build AI-analyzed data dashboards in minutes

2•DonWono•33m ago•0 comments

Show HN: The Agentic Workflow Engine That Lives Inside Your App

https://stabilize.rodmena.ai
2•rodmena•34m ago•0 comments

Persistent Prompts and Built in Search

2•lazybusy•35m ago•0 comments

New Claude Code Feature "Remote Control"

2•rob•36m ago•0 comments

What's Going on with the Price of Gold

https://www.bbc.com/news/articles/c87r2700dq8o
1•teleforce•36m ago•0 comments

Seedream 5.0 Lite API Pricing Breakdown

2•zaaaaooo•37m ago•1 comments

India AI Summit Decoded

https://twitter.com/twitter/status/2025755341279907976
2•stereoradonc•48m ago•0 comments

Remote Labor Index – Measuring AI Automation of Remote Work [pdf]

https://www.remotelabor.ai/paper.pdf
1•TheWiggles•48m ago•0 comments