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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/

I don't want to hear your elevator pitch

https://petterhol.me/2026/07/21/i-dont-want-to-hear-your-elevator-pitch/
1•Anon84•48s ago•0 comments

It was OpenAI that accidentally breached Hugging Face

https://www.axios.com/2026/07/21/openai-says-hugging-face-breach-caused-by-one-its-models
1•seatac76•1m ago•0 comments

AI Thinks the Internet Is Reddit. We Have 8,616 Answers Proving It

https://growtika.com/blog/reddit-ai-visibility-research
1•Growtika•1m ago•0 comments

The Danielson-Lanczos FFT method and bit-reversal

https://khilavm.github.io/blog/2025/danielson-lanczos-fft/
1•khilavm•2m ago•0 comments

From Seed Scripts to Desired-State Reference Data in PostgreSQL

https://vvka-141.github.io/pgmi/articles/desired-state-reference-data-postgresql/
1•aevlampiev•2m ago•0 comments

Show HN: MindCache – An open-source agentic memory system for LLMs

https://github.com/faisalhussain-devs/MindCache/tree/collapsed_tree
1•Faisal9876•3m ago•0 comments

Show HN: Datalevin – a simple, fast, and versatile Datalog database

https://github.com/datalevin/datalevin
2•huahaiy•4m ago•0 comments

From Payroll to Pyongyang: The DPRK IT Worker Money Trail

https://www.dtex.ai/blog/dprk-it-worker-money-trail/
2•speckx•4m ago•0 comments

A Brief Deep History of Literacy

https://substack.com/sign-in
1•nuclearbob•4m ago•0 comments

Airbus to test folding wings for next generation of bestselling planes

https://www.theguardian.com/business/2026/jul/21/airbus-to-test-folding-wings-for-next-generation...
1•n1b0m•5m ago•0 comments

Everything Is an Energy Source: The Potential of Micropower Collection

https://www.japan.go.jp/kizuna/2026/06/potential_micropower_collection.html
1•sjreese•6m ago•1 comments

Amazon SES introduces pricing plans

https://aws.amazon.com/about-aws/whats-new/2026/07/amazon-ses-pricing-plans/
1•dabinat•6m ago•0 comments

The agent principal-agent problem

https://crawshaw.io/blog/agent-principal-agent
1•stevekrouse•8m ago•0 comments

If You Lack Inspiration, Talk to People

https://photoni.st/index.php/2026/07/17/if-you-lack-inspiration-talk-to-people/
1•speckx•8m ago•0 comments

Show HN: Rememori – agent memory in pure TypeScript, zero dependencies

https://rememori.dev
1•GiorgioDotcom•10m ago•0 comments

VGMaps: The Video Game Atlas

https://vgmaps.com/
1•bpierre•12m ago•0 comments

Ambykit

https://github.com/ambystechcom/AmbyKit
1•tavobarrientos•12m ago•1 comments

I Vibe Coded an Inflation-Resistant Currency

https://www.masonforest.com/blockchain/cryptocurrency/bitcoin-dance/2026/07/21/i-vibe-coded-an-in...
1•masonforest2•13m ago•0 comments

I trained a 30M-param LLM from scratch and the scaling "floor" was a mirage

https://github.com/rishipadhye/my-LLM
1•rpadhye•15m ago•0 comments

Where Did All the Computer-Science Professors Go?

https://www.theatlantic.com/technology/2026/07/ai-companies-hiring-academics/688002/
3•enjoyyourlife•15m ago•0 comments

Show HN: TokenPath – token-level citations for LLM output, read from attention

https://tokenpath.ai
2•apoorvumang•19m ago•0 comments

Ramble Sessions with LLM's

https://twitter.com/karpathy/status/2079610838143623371
1•pretext•20m ago•0 comments

'VPNs are lawful technical tools,' says EU Court in landmark copyright ruling

https://www.techradar.com/vpn/vpn-privacy-security/vpns-are-lawful-technical-tools-says-eu-court-...
11•healsdata•23m ago•0 comments

N.J. MVC error registered 6,600 undocumented immigrants to vote

https://www.nj.com/politics/2026/07/thousands-of-undocumented-immigrants-were-registered-to-vote-...
2•speckx•28m ago•1 comments

Dementia symptoms that show up years before diagnosis

https://www.washingtonpost.com/wellness/2026/07/21/these-dementia-symptoms-can-show-up-years-befo...
1•brandonb•28m ago•0 comments

FBI Director Kash Patel Planning a Trip to Russia

https://www.reuters.com/world/us/fbi-director-kash-patel-planning-trip-russia-politico-reports-20...
8•Rooster61•28m ago•3 comments

Shardhash Protocol: Sharden Issuer

https://github.com/babakkarimib/shardhash
2•babakkarimib•29m ago•0 comments

OpenAI Shares Some Alignment Problems

https://thezvi.substack.com/p/openai-shares-some-alignment-problems
2•7777777phil•29m ago•0 comments

Jobflo is getting more useful

https://apps.apple.com/us/app/jobflo-private-job-tracker/id6759933192
1•jsrothwell•30m ago•0 comments

Pete Hegseth's Reckless Message to Helicopter Pilots

https://www.theatlantic.com/international/2026/07/hegseth-reckless-military-helicopter/688008/
6•Jtsummers•30m ago•0 comments