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Bloom's two sigma problem (2020)

https://nintil.com/bloom-sigma
8•Tomte•10mo ago

Comments

trane_project•10mo 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/

The "Passive Income" trap ate a generation of entrepreneurs

https://www.joanwestenberg.com/the-passive-income-trap-ate-a-generation-of-entrepreneurs/
3•devonnull•1m ago•0 comments

Timeplus Released AgentGuard – Real-Time Security Detection for AI Agents

https://www.timeplus.com/post/agentguard
1•gangtao•1m ago•0 comments

The Rise of Marketing Speak

https://sustainableviews.substack.com/p/the-rise-of-marketing-speak
1•rzk•2m ago•0 comments

Break Bricks on Any Webpage

https://github.com/canalun/brick-break-anywhere
1•indigodaddy•2m ago•0 comments

The Mystery in the Medicine Cabinet

https://asteriskmag.com/issues/14/the-mystery-in-the-medicine-cabinet
1•downsplat•2m ago•1 comments

SEC's Power to Force Fraudsters to Disgorge Gains Returns to U.S. Supreme Court

https://www.law.com/nationallawjournal/2026/04/16/secs-power-to-force-fraudsters-to-disgorge-gain...
1•1vuio0pswjnm7•5m ago•0 comments

Doom with LaTex

https://julienlargetpiet.tech/articles/dissecting-latex-revenge-four-years-later.html
1•random__duck•5m ago•0 comments

Netflix Chair Reed Hastings to Leave Board in June

https://www.wsj.com/business/media/netflix-chair-reed-hastings-to-leave-board-in-june-6d887c27
1•fortran77•8m ago•1 comments

Sekreets – Real-Time Scanning of Leaked AI API Keys on GitHub

https://sekreets.vercel.app/
2•certyfreak•11m ago•0 comments

Startup Wars: How George Lucas Produced Star Wars Like a Startup

https://bertolami.com/blog/startup-wars
1•specular•12m ago•0 comments

SFML 3.1 Is Released

https://github.com/SFML/SFML/releases/tag/3.1.0
1•eXpl0it3r•12m ago•0 comments

Ask HN: Opus 4.7 – is anyone measuring the real token cost on agentic tasks?

1•nicola_alessi•13m ago•0 comments

Show HN: The Public Tab – See every federal dollar flowing through your district

https://thepublictab.com/
1•jaaacckz•13m ago•2 comments

Ask HN: Agent orchestrators / UIs you use on top of Claude?

1•nyellin•14m ago•0 comments

Why Engineering Managers shouldn't be expected to code

https://dev.jimgrey.net/2026/03/25/the-player-coach-trap-why-engineering-managers-shouldnt-be-exp...
1•saeedesmaili•15m ago•0 comments

Perplexity Personal Computer

https://www.perplexity.ai/hub/blog/personal-computer-is-here
1•Yukonv•17m ago•0 comments

Artificial Intelligence Index Report [pdf]

https://hai.stanford.edu/assets/files/ai_index_report_2026.pdf
1•danielmorozoff•17m ago•0 comments

Show HN I made my vacation rental bookable by AI agents–no Airbnb, 0% commission

https://hemmabo-mcp-server.vercel.app/.well-known/mcp.json
1•Freezone•17m ago•2 comments

Electron 41 Released

https://www.electronjs.org/blog/electron-41-0
2•andrewstetsenko•18m ago•0 comments

The Pandaverse

https://www.theremingoat.com/blog/the-pandaverse
1•ecliptik•18m ago•0 comments

Sir-Bench – benchmark for security incident response agents

https://arxiv.org/abs/2604.12040
3•dan_l2•18m ago•2 comments

Single-agent AI coding is a nightmare for engineers

https://twitter.com/MilksandMatcha/status/2044863551186309460
1•sarahxc•18m ago•0 comments

How to make your one-on-ones more productive

https://effortbox.com/blog/how-to-make-your-one-on-one-more-productive/
1•andreylangovoy•19m ago•0 comments

Who's paying for tokens and why? (The Anthropic 1000)

https://www.robinsloan.com/lab/ai-spend/
2•speckx•22m ago•1 comments

Finding a duplicated item in an array of N integers in the range 1 to N − 1

https://devblogs.microsoft.com/oldnewthing/20260413-00/?p=112227
1•ibobev•22m ago•0 comments

Our new AI code policy: No AI

https://screenshotbot.io/blog/no-ai
2•kitallis•23m ago•0 comments

Show HN: AI compatibility without compromises

https://supercompat.com
1•Nedomas•24m ago•0 comments

GOP finalizing draft national privacy law that would preempt states

https://www.politico.com/news/2026/04/16/gop-national-privacy-law-technology-00876794
2•Cider9986•24m ago•0 comments

Modular Monolith: dependencies and communication between Modules

https://binaryigor.com/modular-monolith-dependencies-and-communication.html
1•PaulHoule•27m ago•0 comments

Mechanisms of introspective awareness in LLMs [pdf]

https://arxiv.org/abs/2603.21396
1•ryeights•28m ago•0 comments