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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/

Flock CEO Tailed by PI to Ensure No Crimes or Cheating on Wife

https://ipvm.com/reports/priv-invest-flock-ceo
1•jhonovich•1m ago•0 comments

AI Is on Its Last Legs [video]

https://www.youtube.com/watch?v=zdsoe_OsnHw
1•Bender•2m ago•0 comments

Hims and Hers sent user health data to social media giants bombshell FTC lawsuit

https://nypost.com/2026/07/29/business/hims-hers-sent-users-health-data-to-social-media-giants-de...
2•randycupertino•3m ago•1 comments

Barry's Economics: The Science of the Immigration Grift [video]

https://www.youtube.com/watch?v=_OWqzhwsWXM
1•kklisura•4m ago•0 comments

Jorge – minimal site generator with Markdown and org-mode support

https://github.com/facundoolano/jorge
1•facundo_olano•5m ago•0 comments

Large-Scale Code Refactoring with AI

https://swiftace.org/posts/large-scale-code-refactoring-with-ai
1•aakashns•5m ago•0 comments

Can you make ChatGPT follow instructions?

https://ramblingafter.substack.com/p/can-you-make-chatgpt-follow-instructions
1•paulpauper•6m ago•0 comments

Towards a Liberatory Technology, Murray Bookchin (1965)

https://theanarchistlibrary.org/library/lewis-herber-murray-bookchin-towards-a-liberatory-technology
1•mxmilkiib•7m ago•0 comments

The Seam Is the Label

https://vuvko.net/blog/patched-objects/
1•vuvko•8m ago•0 comments

AI Workers Ask U.S. Government for Tools to Slow AI Before a Crisis

https://www.ainews.com/p/ai-workers-us-government-tools-slow-ai-before-crisis
1•ashurandi•9m ago•0 comments

Fibonacci Recursion Drone Synthesizer

https://github.com/wraithsys/fibonacci-synth
2•wraithsys•12m ago•0 comments

What I did in the hedonium shockwave, by Emma, age six and a half

https://www.lesswrong.com/posts/rgXQuG8KXtxugSG6H/what-i-did-in-the-hedonium-shockwave-by-emma-ag...
2•paulpauper•15m ago•0 comments

5% public sample of provenanced OT/ICS security training datasets

https://huggingface.co/datasets/Lateos/Defensive-LLM
2•leochong•15m ago•0 comments

Semiconductor Fabs IV: The Safety

https://nomagicpill.substack.com/p/semiconductor-fabs-iv-the-safety
2•paulpauper•16m ago•0 comments

A Philosophy for AI Agents

https://ideal.iroha1203.dev/a-philosophy-for-ai-agents-1d743e970853
2•iroha1203•16m ago•0 comments

How to lead engineers who don't report to you

https://www.softwareengineeringtimes.com/p/how-to-lead-engineers-who-dont-report
2•RyanSMurphyTech•16m ago•1 comments

New Observatory Captures More Than Half a Million Galaxies in a Single Image

https://nautil.us/new-observatory-captures-more-than-half-a-million-galaxies-in-a-single-image-12...
3•Brajeshwar•18m ago•0 comments

A tiny, private clipboard history app for macOS Native Swift

https://github.com/xvertile/SwiftPaste
2•daan-dj•18m ago•0 comments

Why are German heat pumps more expensive?

https://janrosenow.substack.com/p/why-are-german-heat-pumps-so-much
2•DamonHD•20m ago•0 comments

St13 Python package for trend analysis of financial markets

https://github.com/street13capital/st13
2•kensoh•21m ago•1 comments

OpenChamber: An Agentic Development Environment

https://openchamber.dev/
2•hexomancer•25m ago•0 comments

Browser's new page that shows quotes inspired by your AI chats history

https://musing.wiki
2•pghqdev•25m ago•0 comments

Toronto mayor wants to ban surveillance pricing. Does she have the power?

https://www.torontotoday.ca/local/city-hall/chow-ban-surveillance-pricing-power-toronto-grocers-m...
2•jprs•26m ago•1 comments

Show HN: Open-source playground to red-team AI agents against public prompts

https://playground.fabraix.com/
5•zachdotai•26m ago•1 comments

Ask HN: What are you working on? (August 2026)

12•david927•29m ago•24 comments

Google Caught AI Faking Creativity in Every Office in America [video]

https://www.youtube.com/watch?v=Z_O6Lwj1yjQ
5•Bender•29m ago•0 comments

The Meme Factory: The Indonesians Making Money Off Facebook Outrage

https://netbajura.blogspot.com/2026/08/inside-meme-factory-how-indonesians-are.html
4•AllForAll•30m ago•0 comments

Production Imminent: 40 Solar-Charging Aptera EVs Coming Soon

https://frequal.com/aptera/ProductionImminent.html
6•TeaVMFan•33m ago•2 comments

Notable Sandwiches #145: Yakisoba-Pan

https://buttondown.com/theswordandthesandwich/archive/notable-sandwiches-145-yakisoba-pan/
3•mooreds•33m ago•0 comments

How long will the Grateful Dead's songs survive?

https://text.npr.org/nx-s1-5901986
3•mooreds•35m ago•0 comments