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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/

Judgment Cannot Be Prompted

https://www.tsoon.com/posts/judgment-cannot-be-prompted/
1•mooreds•1m ago•0 comments

Field vs. Google, Inc

https://en.wikipedia.org/wiki/Field_v._Google,_Inc.
1•altilunium•2m ago•0 comments

Grok 4.3 is way cheaper and better than before

https://felloai.com/grok-4-3-review/
1•LV14•2m ago•0 comments

OWASP Agent Security Regression Harness

https://github.com/OWASP/Agent-Security-Regression-Harness
1•mertsatilmaz•2m ago•0 comments

Screw You Realtek

https://www.growse.com/2026/05/02/screw-you-realtek.html
1•fanf2•2m ago•0 comments

Data theft: Teen arrested over hacking of French government website

https://www.france24.com/en/data-thieft-a-15-year-old-minor-arrested
1•RockstarSprain•3m ago•0 comments

Things I Think I Think About Data Privacy

https://blogs.newardassociates.com/blog/2026/titit-data-privacy.html
1•mooreds•4m ago•0 comments

Claude Code, Copilot and Codex got hacked. Attackers went for the credentials

https://venturebeat.com/security/six-exploits-broke-ai-coding-agents-iam-never-saw-them
1•mooreds•4m ago•0 comments

24 Years Ago Today, Bethesda Changed Open World RPG Video Games Forever

https://www.mensjournal.com/entertainment/24-years-ago-today-bethesda-changed-open-world-rpg-vide...
1•Alupis•4m ago•0 comments

sRGB profile comparison

https://ninedegreesbelow.com/photography/srgb-profile-comparison.html
1•Retr0id•8m ago•0 comments

Roll your own local AI coding agents to save money

https://www.theregister.com/2026/05/02/local_ai_coding_agents/
1•samizdis•9m ago•0 comments

How a dose of MDMA transformed a white supremacist

https://www.bbc.com/future/article/20230614-how-a-dose-of-mdma-transformed-a-white-supremacist
2•hochmartinez•11m ago•0 comments

Show HN: Vdiff – CLI to help you review AI-generated code

1•fforbeck•14m ago•0 comments

The cruelty of teaching computing science (EWD 1036)

https://www.cs.utexas.edu/~EWD/transcriptions/EWD10xx/EWD1036.html
1•tosh•17m ago•0 comments

Internet of Agents

1•niketmk2000•18m ago•0 comments

Interoperability for LLM Applications

1•niketmk2000•19m ago•0 comments

The longest railway tunnel is being built under the Alps

https://www.euronews.com/my-europe/2026/05/01/world-record-made-in-europe-the-worlds-longest-rail...
1•akyuu•21m ago•0 comments

Next Dog May Live Longer

https://www.theatlantic.com/science/2026/05/celine-halioua-loyal-pet-longevity/687005/
1•Brajeshwar•25m ago•0 comments

The only schema language AI speaks is JSON Schema

https://www.sourcemeta.com/blog/ai-only-speaks-json-schema/
1•BerislavLopac•32m ago•0 comments

Why Andromeda Is Both 2.5M Years Away and Just Around the Corner

https://joshpearlson.com/articles/posts/closest-galaxy-time-dilation/closest-galaxy-time-dilation...
1•jcpearlson•34m ago•0 comments

Mini PC for local LLMs in 2026

https://terminalbytes.com/best-mini-pc-for-local-llm-2026/
21•charlieirish•34m ago•9 comments

World AI Agents–35 AI Models (Claude, GPT, Llama)via One OpenAIcompatible API

https://world-ai-agents.com
2•fazyyy•40m ago•1 comments

Microsoft brings a Linux-style window trick to Windows 11 via PowerToys

https://www.windowslatest.com/2026/05/01/i-tested-powertoys-new-linux-style-window-controls-on-wi...
3•thunderbong•40m ago•0 comments

Touch Typing Number Keys

https://susam.net/touch-typing-number-keys.html
1•susam•40m ago•0 comments

See what 4D shapes look like (interactive grapher)

https://github.com/kpwdv0/4d-grapher
1•kpwd•44m ago•0 comments

Tripwire: An experiment in zip bombing bad actors

https://func.lol/x/tripwire
2•zdw•45m ago•1 comments

Self-declared 'King of Switzerland' builds empire of 117,000 square metres

https://www.dailymail.com/news/article-15778351/Self-declared-King-Switzerland-builds-empire-117-...
4•tosh•56m ago•0 comments

How to detect paying Cloudflare customers

https://bloomberry.com/blog/how-to-detect-paid-cloudflare-customers-vs-free/
1•AznHisoka•57m ago•0 comments

A Private (PQ Safe) E-Mail Provider You Can Verify End to End

https://bmail.ag/verify
2•rasengan•58m ago•0 comments

Show HN: Threej games – open-source gaming portal

https://threej.in
5•threejin•59m ago•1 comments