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Bloom's two sigma problem (2020)

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

Comments

trane_project•8mo 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/

Meredith Whittaker – AI Agent, AI Spy

https://www.youtube.com/watch?v=0ANECpNdt-4
1•max_•2m ago•0 comments

Confronted over Greenland Europe is ditching its softly-softly approach to Trump

https://www.bbc.co.uk/news/articles/c0lx7j1lrwro
1•treadump•4m ago•0 comments

I ported the OpenAI Codex review prompts to Gemini CLI

https://github.com/grainier/gemini-cli-codex-reviews
1•grainier•7m ago•1 comments

Software as Fast Fashion

https://tante.cc/2026/01/15/software-as-fast-fashion/
1•pantalaimon•7m ago•0 comments

A static site generator written in POSIX shell

https://aashvik.com/posts/shell-ssg/
1•todsacerdoti•9m ago•0 comments

VidSnoop – browser-based video analyzer (codec checker, metadata viewer)

https://www.vidsnoop.com/
1•androidparanoid•9m ago•1 comments

The Military Is Being Forced to Plan for an Unthinkable Betrayal

https://www.theatlantic.com/ideas/2026/01/us-military-trump-greenland/685677/
3•breve•10m ago•0 comments

My thoughts on Gas Town after 10k hours of Claude Code

https://simonhartcher.com/posts/2026-01-19-my-thoughts-on-gas-town-after-10000-hours-of-claude-code/
1•birdculture•13m ago•0 comments

Show HN: NetNerve AI-powered packet analysis that analyses.cap files

https://www.netnerve.online/
1•bhatshubham•14m ago•0 comments

Beddel Protocol serve as the 'API' for AIs to build secure software for us

https://www.npmjs.com/package/beddel
1•mesenga•16m ago•0 comments

A Personal AI Maturity Model (Paimm)

https://danielmiessler.com/blog/personal-ai-maturity-model
1•alexandrp001•17m ago•0 comments

Building an ECS Golden Path with Claude Code and AWS CDK

https://medium.com/zar-engineering/building-an-ecs-golden-path-with-claude-code-and-aws-cdk-d4a58...
1•obiefernandez•17m ago•0 comments

I'm Addicted to Being Useful

https://www.seangoedecke.com/addicted-to-being-useful/
1•swah•17m ago•0 comments

Show HN: Gemini-live-react – Real-time voice AI that works in the browser

1•loffloff•19m ago•0 comments

Sony's TV business is being taken over by Tcl

https://www.theverge.com/news/864263/sony-tcl-tv-business-partnership-takeover-announcement
1•phantomathkg•22m ago•0 comments

I built a typing practice tool because typing tests never helped me improve

1•amitgajbhare•23m ago•0 comments

Show HN: Leta – Command-line LSP client for agentic coders

https://github.com/andreasjansson/leta
1•fagerhult•24m ago•0 comments

Computer-Using Agents Are Transforming Lead Data Research

https://www.louisamayhanrahan.com/p/ai-advancements-in-data-research
1•louisamayh•24m ago•0 comments

Do startups need marketing services? (Insights from a seasoned marketing team)

https://amplift.ai/
1•our79511•25m ago•1 comments

India Ended 451 Years of Portuguese Rule in 36 Hours

https://en.wikipedia.org/wiki/Annexation_of_Goa
1•gyanchawdhary•27m ago•1 comments

A New Cognitive Perspective on Simplicity in System and Product Design (2024)

https://stefanlesser.substack.com/p/video-and-transcript-of-my-presentation
1•notagoodidea•27m ago•0 comments

When religion and sexism collide, women's health suffers

https://www.sltrib.com/opinion/commentary/2026/01/17/voices-how-sexism-religion-hurts/
1•binning•27m ago•0 comments

Anyone here has a usecase for Opern router but for TTS?

1•akshat77•28m ago•0 comments

Does women's discomfort matter?

https://thecritic.co.uk/does-womens-discomfort-matter/
1•binning•29m ago•0 comments

UK consulting on bringing in social media ban for under 16s

https://www.bbc.com/news/articles/cgm4xpyxp7lo
13•1659447091•29m ago•9 comments

Dr. Gladys West, mathematician whose work made GPS possible, dies at 95

https://thezebra.org/2026/01/18/dr-gladys-west-mathematician-whose-work-made-gps-possible-dies-at...
1•binning•29m ago•0 comments

Westermarck Effect

https://en.wikipedia.org/wiki/Westermarck_effect
1•thunderbong•33m ago•0 comments

Micron finds a way to make more DRAM with $1.8B chip plant purchase

https://www.theregister.com/2026/01/20/micron_powerchip_fab_acquisition/
2•ece•33m ago•0 comments

Show HN: Built Gitmore so non-technical founders can understand dev progress

1•inferno22•34m ago•0 comments

String Theory Can Now Describe a Universe That Has Dark Energy

https://www.quantamagazine.org/string-theory-can-now-describe-a-universe-that-has-dark-energy-202...
2•nsoonhui•34m ago•0 comments