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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/

Amazon axes 16,000 jobs as it pushes AI and efficiency

https://www.reuters.com/legal/litigation/amazon-cuts-16000-jobs-globally-broader-restructuring-20...
1•DGAP•39s ago•0 comments

Challenger: The disaster five people saw coming

https://www.abc.net.au/news/science/2026-01-28/space-shuttle-challenger-disaster-nasa-explosion-v...
1•Brajeshwar•1m ago•0 comments

A Lesson in Coexistence

https://aeon.co/essays/lessons-in-pluralism-from-a-17th-century-african-town
1•Brajeshwar•1m ago•0 comments

Drawings of the elements of CMS detector, in the style of Leonardo da Vinci

https://cds.cern.ch/record/1157741/
1•nill0•1m ago•0 comments

Tiny sensor could transform head injury detection

https://medicalxpress.com/news/2026-01-tiny-sensor-injury.html
1•PaulHoule•1m ago•0 comments

Modernizing Virginia's Court Notification System to Reduce Failures to Appear

https://www.rstreet.org/commentary/modernizing-virginias-court-notification-system-to-reduce-fail...
1•hn_acker•4m ago•0 comments

Ask HN: Can a MMO be vibe coded?

1•radicalethics•4m ago•0 comments

Trump claims secret 'discombobulator' weapon was used to help capture Maduro

https://www.msn.com/en-us/news/world/trump-claims-secret-discombobulator-weapon-was-used-to-help-...
1•zaikunzhang•4m ago•0 comments

Show HN: EloLup – where a reaction interface became a way to consume content

https://elolup.com/
1•Strugly•5m ago•0 comments

Show HN: Simple, elegant, beautiful HTTP error status pages [CSS only]

https://github.com/AntiKippi/errorpages
1•AntiKippi•6m ago•0 comments

Slopcraft and the LLM Society

https://habla.news/hodlbod/tools-for-anti-conviviality
2•jonstaab•7m ago•0 comments

Show HN: We built a cheaper, simpler 24/7 proactive agent than moltbot

https://memu.bot/
1•k_kiki•7m ago•0 comments

Show HN: Prefill – Partial application for React components

https://www.xoid.dev/blog/introducing-prefill
1•onurkerimov•8m ago•1 comments

Show HN: Universal DeepSeek OCR 2 – CPU, MPS, CUDA Support

https://github.com/Dogacel/Universal-DeepSeek-OCR-2
1•dogacel•8m ago•0 comments

A Scheme Primer (2025)

https://files.spritely.institute/papers/scheme-primer.html
1•thomasjb•9m ago•0 comments

Show HN: We built a type-safe Python ORM for RedisGraph/FalkorDB

2•hello-tmst•9m ago•0 comments

Controlling your (personal) data with a Solid-based data vault is reality (2025)

https://medium.com/ing-blog/controlling-your-personal-data-with-a-solid-based-data-vault-is-reali...
1•terespuwash•11m ago•1 comments

Dole Kemp 96 Web Site

https://www.dolekemp96.org/main.htm
11•DamnInteresting•12m ago•2 comments

We Found 5 Ways to Hack Any Developer Using Google Gemini CLI

https://twitter.com/Zaddyzaddy/status/2016532572650733820
1•zaddyzaddy•15m ago•0 comments

Removing analytics from all my sites

https://baty.net/posts/2026/01/removing-analytics-from-baty-net/
2•tolerance•16m ago•0 comments

Linux kernel community has a contingency plan to replace Linus Torvalds

https://github.com/torvalds/linux/commit/102606402f4f5943266160e263c450fdfe4dd981
2•speckx•17m ago•1 comments

Show HN: BarrierX: Win back lost enterprise deals by analyzing that others close

https://barrierx.ai/
1•IAMsterdam•17m ago•0 comments

Software Has Its Lean Manufacturing Moment

https://mediansofproduction.substack.com/p/software-has-its-lean-manufacturing
1•arcsincosin•17m ago•1 comments

Principles for Human-Rights Centred Application of the DSA: A Global Perspective

https://www.eff.org/document/principles-human-rights-centred-application-dsa-global-perspective
2•hn_acker•19m ago•1 comments

Excessive Bold

https://martinfowler.com/bliki/ExcessiveBold.html
1•TangerineDream•19m ago•1 comments

Ukraine says more than 80% of enemy targets now destroyed by drones

https://www.defensenews.com/global/europe/2026/01/28/ukraine-says-more-than-80-of-enemy-targets-n...
10•Geonode•19m ago•0 comments

Clawdbot and the Era of AI in a Box

https://www.hadijaveed.me/2026/01/28/clawdbot-beyond-the-hype/
1•hjaveed•22m ago•1 comments

NetNewsWire 7.0

https://netnewswire.blog/2026/01/27/netnewswire-for-mac.html
1•petecooper•23m ago•0 comments

China lags behind US at AI frontier but could quickly catch up, say experts

https://www.theguardian.com/world/2026/jan/28/china-lags-behind-us-at-ai-frontier-but-could-quick...
1•c420•23m ago•0 comments

Show HN: A tiny typing game to keep your fingers moving

https://chaart.itch.io/typestraw
2•the_real_tjaart•23m ago•0 comments