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Bloom's two sigma problem (2020)

https://nintil.com/bloom-sigma
8•Tomte•11mo ago

Comments

trane_project•11mo 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/

Apollo Comms Restoration: setup operational, perform nav update from Houston [video]

https://www.youtube.com/watch?v=VdJBgpocB7I
1•fortran77•2m ago•0 comments

Personalsit.es

https://personalsit.es
1•OuterVale•2m ago•0 comments

Apple's treatment of AI coding apps could be shifting with Replit update

https://appleinsider.com/articles/26/05/15/apples-treatment-of-ai-coding-apps-could-be-shifting-w...
1•vickychijwani•2m ago•0 comments

Models finding vulnerabilities is not the primary source of cybersecurity risk

https://www.lesswrong.com/posts/gutiw8MBrYDiD2u5z/models-finding-software-vulnerabilities-is-not-...
2•alentodorov•8m ago•0 comments

Show HN: Thuki – local Al overlay for macOS (double-tap Control, no API key)

https://www.thuki.app
1•logan_ng•12m ago•0 comments

Don't Outsource the Learning

https://twitter.com/addyosmani/status/2056078124346228860
1•pretext•13m ago•0 comments

Chrome iOS Broken on HN etc.

1•alphaomegacode•14m ago•0 comments

Open-Source, Plugin-Driven Geospatial Intelligence Engine

https://github.com/silvertakana/worldwideview
1•huragok•14m ago•0 comments

The two oldest printing presses

https://museumplantinmoretus.be/en/worlds-two-oldest-printing-presses
1•janpot•15m ago•0 comments

Michael Jackson returns to Billboard Hot 100

https://liveclip.substack.com/p/michael-jackson-returns-to-top-20-billboard
1•firasd•15m ago•0 comments

Show HN: Maravel-Framework v20.0-RC – Extends Benchmark Lead over Laravel/Lumen

https://github.com/macropay-solutions/maravelith/releases/tag/20.0.0-RC7
1•marius-ciclistu•16m ago•0 comments

New Design For The FreeBSD Website

https://www.freebsd.org/
1•signa11•20m ago•0 comments

The Gentle Singularity; the Fast Takeoff

https://www.prinzai.com/p/the-gentle-singularity-the-fast-takeoff
1•pretext•21m ago•0 comments

MouseClaw – a pixel-art desktop AI pet for macOS (hold to speak)

https://edwin-hao-ai.github.io/MouseClaw/
2•edwinhao•25m ago•0 comments

Can we cite Wikipedia? What if it was more reliable than its detractors? (2025)

https://arxiv.org/abs/2509.02462
1•Glitch752•26m ago•0 comments

Zdroid: Zed Editor Ported to Android

https://github.com/Dylanmurzello/zed-android-port
2•goodburb•31m ago•0 comments

3months ago, I predicted OpenClaw wouldn't uninstall cleanly and prepared for it

https://github.com/oswarld/openshears
1•haebom•33m ago•2 comments

Semantic IDs for finding vulnerable code at scale

https://shrikar.com/writing/semantic-ids-for-vulnerable-code
1•shrikar•35m ago•0 comments

Étienne Ghys: The Shape of Letters: From Leonardo da Vinci to Donald Knuth

https://www.youtube.com/watch?v=1OIxzewWilc
4•tzury•37m ago•0 comments

Ask HN: Why we use Git wrong?

1•modinfo•39m ago•0 comments

The Aussie gov just screwed startup founders. my musings

https://ghuntley.com/livid/
3•ghuntley•42m ago•0 comments

Blockchain for beginners: a brief explainer with demo

https://www.seangoedecke.com/blockchain-for-beginners/
1•argee•43m ago•1 comments

Is the Weight-Loss Drug Revolution Causing a Frailty Epidemic?

https://www.wsj.com/health/pharma/glp-1-weight-muscle-loss-frailty-ca277a24
1•0in•44m ago•0 comments

Freelang – a Libc-free, direct sys/kernel call language with weird concurrency

https://freelang.dev
10•keepamovin•44m ago•5 comments

MemEye: A Visual-Centric Evaluation Framework for Multimodal Agent Memory

https://huggingface.co/papers/2605.15128
1•maxloh•46m ago•0 comments

Review: Sylve on FreeBSD, one big security hole

https://distrowatch.com/weekly-mobile.php?issue=20260518#sylve
1•jandeboevrie•47m ago•0 comments

YouTube, Snap and TikTok settle school district's social media addiction claims

https://www.reuters.com/world/us/youtube-snap-settle-school-districts-social-media-addiction-clai...
1•1vuio0pswjnm7•48m ago•0 comments

The CEO Agenda 2025

https://www.oliverwymanforum.com/ceo-agenda/how-ceos-navigate-geopolitics-trade-technology-people...
1•1vuio0pswjnm7•50m ago•0 comments

Ex-Google CEO Eric Schmidt Fails to Read Room on AI, Gets Booed into Oblivion

https://gizmodo.com/ex-google-ceo-eric-schmidt-fails-to-read-room-on-ai-gets-booed-to-oblivion-20...
2•imichael•50m ago•1 comments

Usual implementation of attention transformers (SDPA) is kind of bad, actually

https://gist.github.com/celoyd/6bf10122c3f5f7e64b0c684704e4ffb2
1•teleforce•52m ago•0 comments