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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/

Show HN: Multi-agent-shogun – tmux and YAML mailbox for parallel AI agents

https://github.com/yohey-w/multi-agent-shogun
1•oshio_shoppaize•21s ago•0 comments

Gitmeh: AI-powered Git commits for the terminally lazy

https://github.com/ryanhellyer/gitmeh
1•ingve•3m ago•0 comments

The etymology of Arctic and Antarctic (2018)

https://uselessetymology.com/2018/01/01/the-etymology-of-arctic-and-antarctic/
1•jawns•8m ago•0 comments

Revealing hidden turbulent structures from limited observations and equations

https://phys.org/news/2026-02-revealing-hidden-turbulent-limited-equations.html
1•bikenaga•9m ago•0 comments

The Big Money in Today's Economy Is Going to Capital, Not Labor

https://www.wsj.com/economy/jobs/capital-labor-wealth-economy-2fcf6c2f
3•xen_relay•10m ago•0 comments

Ask HN: What is your monthly AI spending?

2•tipiirai•11m ago•0 comments

America isn't exceptional – it's the exception

https://www.not-ship.com/america-isnt-exceptional-its-the-exception/
1•gaws•13m ago•0 comments

Weil Anima

https://www.math.columbia.edu/~woit/wordpress/?p=15456
1•jjgreen•14m ago•0 comments

Why I Co-Founded SAIR

https://www.youtube.com/watch?v=Z5GKnb4H_bM
1•doppp•15m ago•0 comments

Recreating an Ancient Pump (with no moving parts)

https://practical.engineering/blog/2026/1/6/recreating-an-ancient-pump-with-no-moving-parts
1•xg15•15m ago•0 comments

The Human Source – LinkedIn but without lunatics

https://thehumansource.com
2•salbertengo•16m ago•0 comments

Linux 7.0 Officially Concluding the Rust Experiment

https://www.phoronix.com/news/Linux-7.0-Rust
2•antimora•16m ago•0 comments

Ads in ChatGPT

https://help.openai.com/en/articles/20001047-ads-in-chatgpt
5•petethomas•17m ago•0 comments

Windows Notepad App Remote Code Execution Vulnerability

https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-20841
4•dunder_cat•19m ago•0 comments

The death of Open Banking for hobbyists

https://indigo.spot/cashcat-open-banking
1•lemonaise•21m ago•0 comments

FDA declines to review Moderna's mRNA flu shot

https://www.nbcnews.com/health/health-news/fda-declines-review-modernas-mrna-flu-shot-rcna258436
2•bikenaga•21m ago•0 comments

FDA Refuses to Review Moderna Flu Vaccine

https://www.nytimes.com/2026/02/10/health/fda-moderna-mrna-flu-vaccine.html
9•xnx•22m ago•0 comments

Experimental: Add xx-zones protocol for window positioning in zones

https://gitlab.freedesktop.org/wayland/wayland-protocols/-/commit/81632409f6c80fd01b0f3e0284c7984...
1•sho_hn•24m ago•0 comments

We rendered and embedded one million CAD files

https://cad-search-three.vercel.app/
2•DavidFerris•25m ago•4 comments

Hacktivist scrapes over 500k stalkerware customers' payment records

https://techcrunch.com/2026/02/09/hacktivist-scrapes-over-500000-stalkerware-customers-payment-re...
2•iamnothere•25m ago•0 comments

Uifork

https://github.com/sambernhardt/uifork
1•handfuloflight•26m ago•0 comments

Against Captcha: Why Koen Verifies with Kanji

https://koen.social/posts/bdcf9238-070c-4574-8efa-3ad4f42f5237/against-captcha-why-koen-verifies-...
1•projectazorian•27m ago•1 comments

LED Sign Simulator

https://led.dominick.cc
1•dominick-cc•28m ago•1 comments

Developer Marketing Engineer. Species yet to be discovered

https://developerled.substack.com/p/developer-marketing-engineer
1•yoimkonrad•28m ago•0 comments

A new modular security and system‑monitoring suite (feedback welcome)

1•j0hnsm1th•29m ago•0 comments

ArcFolderArchiver – Leave Arc without leaving your folders/spaces

https://github.com/flawnn/ArcFolderArchiver
1•flawn•29m ago•0 comments

India Data Center Safe Harbor Shows US States Must Stop Handouts

https://news.bloombergtax.com/tax-insights-and-commentary/india-data-center-safe-harbor-shows-us-...
1•tldrthelaw•30m ago•0 comments

Wealth Manager Stocks Sink as New AI Tool Sparks Disruption Fear

https://www.bloomberg.com/news/articles/2026-02-10/wealth-manager-stocks-sink-as-new-ai-tool-spar...
2•petethomas•30m ago•0 comments

The quirky geology behind Olympic curling stones

https://www.scientificamerican.com/article/the-quirky-geology-behind-olympic-curling-stones/
2•c420•30m ago•0 comments

Will consciousness be the only thing humans have left?

1•syntex•32m ago•1 comments