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Bloom's two sigma problem (2020)

https://nintil.com/bloom-sigma
8•Tomte•12mo ago

Comments

trane_project•12mo 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/

zellij-org/awesome-zellij: A list of resources for zellij

https://github.com/zellij-org/awesome-zellij
1•y1n0•2m ago•0 comments

I've Spent 25 Years Studying Loneliness. AI Is About to Make It Worse

https://fortune.com/2026/05/23/loneliness-researcher-ai-companions-social-disconnection-warning/
2•Brajeshwar•5m ago•0 comments

'Future of work' on agenda as NZ govt digital leaders head to Microsoft US HQ

https://www.rnz.co.nz/news/political/596121/future-of-work-on-agenda-as-nz-govt-digital-leaders-h...
4•billybuckwheat•8m ago•0 comments

Garden Grove chemical threat: 40000 evacuated as overheated tank faces explosion

https://www.cnn.com/2026/05/22/us/chemical-spill-orange-county-california
1•amelius•8m ago•0 comments

Edit components and host your website

https://slatehut.com
1•isandeep1995•14m ago•0 comments

Show HN: Runners? This One for You

https://runnerapp.pro/
1•dortal•14m ago•0 comments

Prompts are technical debt too

https://www.seangoedecke.com/prompts-are-technical-debt-too/
1•saikatsg•15m ago•0 comments

Code review is not about catching bugs

https://www.davidpoll.com/2026/02/code-review-is-not-about-catching-bugs/
1•ville•16m ago•0 comments

GateGraph – a gate that decides if an AI agent action may proceed before it runs

https://github.com/humancoreai/Gategraph
1•humancore•19m ago•0 comments

Air France and Airbus found guilty of manslaughter over 2009 plane crash

https://www.bbc.com/news/articles/czd2qmdvmq6o
3•baal80spam•21m ago•0 comments

Planescape: Torment, Part 1: From the Tabletop

https://www.filfre.net/2026/05/planescape-torment-part-1-from-the-tabletop/
1•birdculture•23m ago•0 comments

Claude doesn't know what time it is

https://blog.danielyj.com/blog/please-give-it-a-clock
3•bear_with_me•30m ago•1 comments

European households waste > 70 kg of food per capita yearly

https://www.sciencedirect.com/science/article/pii/S0956053X26002060
1•rustoo•32m ago•0 comments

Google's Gmail to Offer 1GB Email Storage? (2004)

https://m.slashdot.org/story/44639
3•chistev•32m ago•0 comments

Free Quick Fix Design Tools

https://quickfix.tools/design/
1•mlongo•32m ago•1 comments

Ask HN: Why disparage AI while attributing ideas to AI when written with it?

1•amichail•32m ago•6 comments

Show HN: nsS3ui – A non sucking GUI for S3

1•isuleman•34m ago•2 comments

Mercor AI post-training for generalist experts – referral

https://work.mercor.com/jobs/list_AAABnd0_i7HkvuPZUt1LkbpI/generalist-expert
1•elsadek•34m ago•0 comments

Python 1.0.0 is out (1994)

https://groups.google.com/g/comp.lang.misc/c/_QUzdEGFwCo
1•downbad_•36m ago•0 comments

Show HN: Vibe-coded Steam, but in the browser

https://gameghost.manus.space/
5•astlouis44•36m ago•0 comments

GitHub Copilot App

https://github.com/github/app
2•saikatsg•38m ago•1 comments

Reid (Hoffman) AI (2025)

https://2025.siliconvalley.video/speaker/reid-ai/
1•gnabgib•39m ago•0 comments

Using games/cards to learn new skills

1•dominikz•40m ago•0 comments

CLI Printing Press

https://printingpress.dev/
1•archb•42m ago•0 comments

The Particle Comes Alive: Modeling a Particle in Thermal Bath; Langevin Dynamics

https://chillphysicsenjoyer.substack.com/p/the-particle-comes-alive
2•crescit_eundo•47m ago•0 comments

Data Fundamentals Primer for Learning LLM

https://algo-rhythm.dev/en/data/
9•vlumm•48m ago•1 comments

Execs Are Deploying Digital Twins to Do Their Work

https://www.wsj.com/tech/ai/execs-are-deploying-digital-twins-to-do-their-work-9547b375
3•Brajeshwar•48m ago•0 comments

Data Centers Now Consume 6% of US Electricity–and the Backlash Has Begun

https://singularityhub.com/2026/05/22/data-centers-now-consume-6-of-electricity-in-the-us-and-the...
3•cdrnsf•48m ago•1 comments

Agent Is Still a Hardcoded Workflow. It Is Not a Digital Employee Yet

https://kimura.yumiwillems.com/p/your-agent-is-still-a-hardcoded-workflow
3•BehaviorGraph•49m ago•0 comments

When Steve Jobs Grew Up

https://www.thefp.com/p/steve-jobs-leadership-transformation
3•Michelangelo11•51m ago•0 comments