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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/

Ask HN: How did you set up a multi-agent orchestration for personal use?

1•cromka•3m ago•0 comments

A Deep Dive on China's "LineShine" All-CPU, Exaflops-Class Supercomputer

https://www.nextplatform.com/hpc/2026/06/25/a-deep-dive-on-chinas-lineshine-all-cpu-exaflops-clas...
1•jonbaer•12m ago•0 comments

Anthropic's philosopher answers your questions [video]

https://www.youtube.com/watch?v=I9aGC6Ui3eE
2•binyu•14m ago•1 comments

Om Malik – Silicon Valley Has an Empathy Vacuum (Nov 2016)

https://www.newyorker.com/business/currency/silicon-valley-has-an-empathy-vacuum
2•rmason•17m ago•1 comments

Van Halen test

https://en.wikipedia.org/wiki/Van_Halen_test
4•teleforce•19m ago•0 comments

Show HN: FastPlay, a fast minimal Windows video player built in Rust

https://github.com/CalvinSturm/FastPlay
1•CalvinSturm•21m ago•0 comments

Investors bet on AI again after Micron reports 346% sales jump

https://www.cnn.com/2026/06/25/business/micron-results-ai-stocks-volatility
1•dabinat•23m ago•0 comments

Steve Jobs felt certain Apple would never have existed without making blue boxes

https://macdailynews.com/2024/06/19/steve-jobs-felt-certain-apple-would-never-have-existed-withou...
2•SockThief•25m ago•0 comments

Popular Adblock for YouTube extension contains remote code execution

https://www.island.io/blog/badblocker-11-million-users-one-server-call-away-from-compromise
2•fastest963•31m ago•0 comments

Claude AI's link handling and fix

https://www.FoolQuest.com/
2•Aaron_Agassi•33m ago•0 comments

Show HN: A field recording of the underground. The engineers and producers

https://2inch.fm/
2•shawnzam•34m ago•1 comments

Wall Street Embraces the Dollar as Warsh's Fed Activates Bulls

https://www.bloomberg.com/news/articles/2026-06-25/wall-street-embraces-the-dollar-as-warsh-s-fed...
3•petethomas•35m ago•0 comments

Tropius: Detect AI Tropes in Prose

https://tangled.org/desertthunder.dev/tropius
2•birdculture•38m ago•0 comments

Ask HN: Anyone Here Work for Google? Specifically on the Google SMB Newsletter?

2•VladVladikoff•41m ago•0 comments

Trump administration asks to hold OpenAI's next model

https://www.axios.com/2026/06/25/trump-administration-openai-gpt-model-release
6•dramebaaz•43m ago•1 comments

Show HN: Replyt – Track which Reddit discussions become customers

https://replyt.co
4•hectorguedea•43m ago•0 comments

Ask HN: Norway bans AI in elementary schools

3•mellosty•46m ago•3 comments

This isn't a PPT. Repo speaks

2•hblqzj•50m ago•0 comments

Show HN: Pw-whip, a bridge between PipeWire and WHIP

https://github.com/jech/pw-whip/
3•jech•53m ago•0 comments

Poll

6•krapp•53m ago•2 comments

Deep Dive into IBM's new NanoStack 0.7nm Process Node for Chips – 666 MTr/mm2

https://morethanmoore.substack.com/p/ibms-announces-07nm-process-node
4•IanCutress•54m ago•0 comments

Hollywood-backed nonprofit launches machine-readable AI consent registry

https://rslmedia.org/
2•navs•56m ago•0 comments

The Garbage Collection Handbook: The Art of Automatic Memory Management (2nd Ed)

https://gchandbook.org/
11•teleforce•1h ago•1 comments

AI doesn't take jobs. It takes tasks

https://www.nextgig.rocks/dash/how-ai-changes-jobs
4•poseidon_sg•1h ago•1 comments

How do you tackle a backlog of deferred maintenance you didn't create?

3•zeelex•1h ago•0 comments

Elasto Mania Ported to WebAssembly

https://joshumax.github.io/elma-web/
2•joshumax•1h ago•0 comments

Show HN: HoprLabs – a Python lab for prototyping AI math ideas

https://github.com/TangibleResearch/HoprLabs
3•reboy•1h ago•0 comments

Oracle workforce shrinks by about 21,000 employees amid AI adoption

https://finance.yahoo.com/technology/ai/articles/oracle-workforce-shrinks-13-204431510.html
4•akyuu•1h ago•0 comments

Ford could bring F1-inspired 'skunkworks' EVs to Europe

https://www.autocar.co.uk/car-news/electric-cars/ford-could-bring-f1-inspired-skunkworks-evs-europe
3•breve•1h ago•1 comments

Show HN: DeepSeek Flash inverted the economics of agent products

https://www.rtrvr.ai/blog/code-as-plan-deepseek-flash-text-only-browser-agent
8•arjunchint•1h ago•0 comments