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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/

The tax strategy used by the rich to pay 0% income tax

https://www.bloomberg.com/features/2026-aqr-tax-loss-harvesting-billionaires/
1•iamacyborg•52s ago•0 comments

Show HN: View GitHub PDFs in the browser, the easy way

https://pdfgithub.com
1•bogdannbv•9m ago•0 comments

Europe Wants to Break Free from American and Chinese Technology. But How?

https://www.nytimes.com/2026/07/16/world/europe/digital-autonomy-ai.html
2•jamesblonde•9m ago•0 comments

Ask HN: In post AI world, who is responsible if the code break?

2•pranshuchittora•11m ago•1 comments

Why is Anthropic's public writing style so unlike Claude's?

https://cmart.blog/claude-writing/
1•chrismartin•12m ago•0 comments

Grok.com is returning Cloudflare Error 521

1•linzhangrun•14m ago•0 comments

LinkedIn says it won't be spending big on AI hardware this year

https://www.techradar.com/pro/linkedin-says-it-wont-be-spending-big-on-ai-hardware-this-year-but-...
1•01-_-•19m ago•0 comments

Apple challenges the UK's second attempt to gain access to iCloud data

https://www.euronews.com/next/2026/08/04/apple-challenges-the-uks-second-attempt-to-gain-access-t...
2•01-_-•20m ago•0 comments

A Common Thread

https://blog.oxplot.com/a-common-thread/
2•oxplot•20m ago•0 comments

reCAPTCHA-like verification now requires you to run curl – bash

1•dudalev•21m ago•2 comments

AI Futures Model: Timelines and Takeoff

https://www.aifuturesmodel.com/
1•m-novikov•22m ago•0 comments

How to Speak to City Councils About Public Safety Technology [pdf]

https://www.documentcloud.org/documents/28531454-flockbook/
1•Cider9986•22m ago•0 comments

What nobody tells you about writing agent skills

https://twitter.com/posthog/status/2084345938089316582
1•tosh•23m ago•0 comments

Understanding Dek Bass Through the Story of Bass Boss, DJ Khobir

https://pureemag.substack.com/p/idhar-attack-understanding-dek-bass
1•gregsadetsky•25m ago•1 comments

Tell HN: If you can hear this, you are the reaistance

1•reinitctxoffset•27m ago•0 comments

What Is Open Source Developer Relations?

https://opensourceonpurpose.substack.com/p/what-is-open-source-developer-relations
1•eigenBasis•30m ago•0 comments

The AI Revolution – History Repeating Itself – On Sentience

https://www.alanbonnici.com/2026/07/the-ai-revolution-history-repeating.html
1•TTMO•30m ago•0 comments

Quack: Turn DuckDB into a client-server database

https://duckdb.org/quack/
1•janandonly•31m ago•0 comments

When Every AI Trend Becomes a New Discipline [video]

https://www.youtube.com/watch?v=2myd3cgqe2k
1•v-mdev•33m ago•0 comments

First Draft of a Report on the EDVAC (von Neumann, 1945) [pdf]

https://web.mit.edu/sts.035/www/PDFs/edvac.pdf
1•thedreammachine•35m ago•0 comments

I wasted four months waiting for Anthropic to review my MCP

https://joshsymonds.com/blog/anthropic-hates-developers/
1•Veraticus•36m ago•0 comments

What I Want to Tell You About Orbs

https://ampcode.com/notes/what-i-want-to-tell-you-about-orbs
1•tosh•38m ago•0 comments

A Norwegian government agency made a parody of the enshittification phenomenon [video]

https://www.youtube.com/watch?v=T4Upf_B9RLQ
5•acadapter•42m ago•0 comments

Voice notes shouldn't cross the ocean. Keep your thoughts private

https://derogab.com/2026/08/01/AI-Notes/
1•derogab•44m ago•0 comments

The frontier of GPQA-Dumb models

https://github.com/ninjahawk/bongochat
1•ninjahawk1•45m ago•1 comments

Show HN: Ragleap-RAG – RAG engine that documents what it doesn't do yet

https://github.com/antonyrag/ragleap-core
1•antonyragleap•49m ago•0 comments

Show HN: ArtDeck – An infinite canvas for collecting and studying references

https://getartdeck.com/
1•artdeck•50m ago•0 comments

He Wasn't Chasing Mountains

https://hasskhan.substack.com/p/he-wasnt-chasing-mountains
1•pradeepchhetri•51m ago•0 comments

Bloody Awful Work Creeps in When Standards Are Relaxed

https://dailysceptic.org/2026/08/02/bloody-awful-work-creeps-in-when-standards-are-relaxed/
2•Michelangelo11•52m ago•0 comments

Apple says MacBook Neo is pulling schools away from Windows and Chromebooks

https://9to5mac.com/2026/08/01/apple-says-macbook-neo-is-pulling-schools-away-from-windows-and-ch...
3•gslin•52m ago•0 comments