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Bloom's two sigma problem (2020)

https://nintil.com/bloom-sigma
8•Tomte•1y ago

Comments

trane_project•1y 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/

AI Has Come for Serif Fonts

https://www.wired.com/story/ai-has-come-for-serif-fonts/
1•unprovable•1m ago•0 comments

UK PM Starmer set to ban 'harmful' social media for under-16s

https://www.reuters.com/legal/litigation/uk-pm-starmer-set-ban-harmful-social-media-under-16s-202...
4•geox•19m ago•3 comments

The Cypherpunk Library

https://www.cypherpunkbooks.com
3•yu3zhou4•22m ago•0 comments

LLMs and Performative Productivity

https://joshcollinsworth.com/blog/productivity
1•gregnavis•23m ago•0 comments

Owning Your Dependencies

https://thestoicprogrammer.substack.com/p/owning-your-dependencies
2•birdculture•28m ago•1 comments

In Defense of YAML

https://opensource.posit.co/blog/2026-05-21_in-defense-of-yaml/
1•theanonymousone•32m ago•0 comments

Show HN: Free read-only script to find wasted AWS spend

https://cloudbudgetmaster.com/tools/aws-waste-finder/
1•samarth0211•32m ago•0 comments

The GitHub Copilot Bill Came Due. Here's What Engineering Leaders Should Do

https://blog.kilo.ai/p/the-github-copilot-bill-came-due
2•Aireen5858•38m ago•0 comments

Dao Heart 3.13 a symbolic safety layer for value drift and AI alignment research

https://github.com/Mankirat47/Dao-Heart-3.13
1•Mankirat47•40m ago•0 comments

OneDrive data now has an expiry date

https://ms365news.com/blogs/f/your-onedrive-data-now-has-an-expiry-data
3•taubek•43m ago•0 comments

String theory may be inevitable from basic assumptions about the universe

https://www.science.org/content/article/after-empty-promises-string-theory-finds-new-uses
1•isaacfrond•44m ago•0 comments

GitHub is (partially) down again. Do you look for alternatives?

1•Hypnosis6173•46m ago•1 comments

Bitcoin pump to $63,700 triggers the most short liquidations since late April

https://www.coindesk.com/markets/2026/06/08/bitcoin-pump-to-usd63-700-triggers-the-most-short-liq...
1•Varun-Sakhuja•48m ago•1 comments

Mimo v2.5 is better deal than DeepSeek v4 flash

1•shivang2607•49m ago•0 comments

Show HN: Image-3D: photo to 3D splat that runs in the browser

https://mukba.ng/image-3d/
1•mnorris•51m ago•0 comments

The EU Open Source Strategy

https://digital-strategy.ec.europa.eu/en/policies/open-source-strategy
5•vrganj•54m ago•0 comments

DoomBench – benchmarking data stacks running Doom

https://cedardb.com/blog/doombench/
2•krishadi•56m ago•0 comments

GitHub Is Down

https://www.githubstatus.com/incidents/m7n7sm0sr1pz
39•cosuhi•1h ago•31 comments

Atlantic 'cold blob' likely caused by weakening AMOC near a tipping point

https://phys.org/news/2026-06-atlantic-cold-blob-weakening-ocean.html
2•btilly•1h ago•0 comments

A Languages Visualization Experiment

https://github.com/PEZ/languages-visualizations/
1•tosh•1h ago•0 comments

AI Has a Measurement Problem – And it's everyone's problem

https://luisgardea.substack.com/p/ai-has-a-measurement-problem
2•gallardo147•1h ago•1 comments

A 'Miraculous Transformation': How Kim Jong-Un Fortified North Korea

https://www.nytimes.com/2026/06/08/world/asia/north-korea-kim-jong-un-pandemic-economy.html
1•JumpCrisscross•1h ago•0 comments

Turn your architecture into a queryable knowledge graph (renders to Excalidraw)

https://github.com/BV-Venky/excalidraw-architect-mcp
2•Venky1729•1h ago•0 comments

Age verification tech could put children at greater risk, says think tank

https://www.computerweekly.com/news/366643835/Age-verification-tech-could-put-children-at-greater...
9•robtherobber•1h ago•0 comments

Minimal, Meaningful, Comfortable, Durable Bracelets for Dads

https://glintandluck.com/blogs/news/best-dad-bracelet-ideas-for-father-s-day-meaningful-gift-guide
2•Chris_taka•1h ago•0 comments

Show HN: Pingtrace

https://github.com/skhell/pingtrace
2•skhell•1h ago•0 comments

Gen Z turn to 'dopamine sites' for quick comfort

https://www.koreatimes.co.kr/lifestyle/trends/20260527/gen-z-turn-to-dopamine-sites-for-quick-com...
5•jnakano89•1h ago•2 comments

Show HN: Live Voice Translation Interpreter [video]

https://www.youtube.com/shorts/H1alb-d1fOo
1•julienreszka•1h ago•0 comments

Show HN: AI Boost – an MCP for accessing your everyday patterns

https://www.ai-boost.io/
1•npiano•1h ago•0 comments

NexusOS v2.0 – A zero-dependency pipeline streaming server chaos to Parquet

https://huggingface.co/datasets/Amman-shah/ecommerce-production-incident-postmortems
1•nexus_os•1h ago•0 comments