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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/

New VSCode Default Themes

https://code.visualstudio.com/updates/v1_113/
1•adityamwagh•39s ago•1 comments

How to Login to Gmail with Another Account (Step-by-Step Screenshots)

1•lamquick•1m ago•0 comments

US deploys uncrewed drone boats in conflict with Iran

https://www.reuters.com/business/aerospace-defense/us-deploys-uncrewed-drone-boats-conflict-with-...
2•JumpCrisscross•2m ago•0 comments

Insanely Fast Whisper - Blazingly fast audio transcriptions

https://github.com/Vaibhavs10/insanely-fast-whisper
1•Anon84•4m ago•0 comments

Japan research uncovers how coffee constituent limit growth of colorectal cancer

https://mainichi.jp/english/articles/20260326/p2a/00m/0sc/002000c
2•rawgabbit•6m ago•0 comments

A Primer on Long-Duration Life Support

https://mceglowski.substack.com/p/a-primer-on-long-duration-life-support
1•zdw•8m ago•0 comments

Show HN: My 'pet' project, a Tinder-esque experience for rescuing dogs and cats

https://rescueapet.benswork.space
2•player_piano•11m ago•0 comments

Memorial to IT Workers Who Have Fallen in Ukraine

https://dou.ua/memorial/
2•d-cc•12m ago•0 comments

Trump Weighs Sending Another 10k Ground Troops to the Middle East

https://www.wsj.com/livecoverage/iran-war-us-israel-news-updates/card/trump-weighs-sending-anothe...
2•Anon84•12m ago•1 comments

I made a pacakge that mocks your coding agent

https://twitter.com/alexgaoth/status/2030922676525805922
1•alexgaoth•15m ago•0 comments

App Store Connect analytics missing platform versions

https://lapcatsoftware.com/articles/2026/3/12.html
1•zdw•19m ago•0 comments

Hexagonal Tic-Tac-Toe

https://hex-tic-tac-toe.did.science/
1•zahlman•20m ago•1 comments

IP over Avian Carriers

https://en.wikipedia.org/wiki/IP_over_Avian_Carriers
1•dvrp•29m ago•1 comments

Show HN: ProxChat – A Local Buddylist

https://proxchat.1jd.org
1•tldrthelaw•30m ago•0 comments

How long airport security lines are linked to Trump's obsession

https://www.theguardian.com/us-news/2026/mar/23/airport-tsa-lines-trump-save-america-act-explained
4•abdelhousni•32m ago•0 comments

4plt: A Void Pubnix

https://zgd.4plt.ch/blog/1.html
1•openports•32m ago•0 comments

Gnat

https://github.com/galaxy-io/gnat
1•ikswolzok•33m ago•0 comments

Interoperable Randomness Beacons

https://csrc.nist.gov/Projects/interoperable-randomness-beacons/beacon-20
2•curiousObject•34m ago•0 comments

The Math Behind TurboQuant

https://www.baseten.co/blog/i-spent-31-hours-on-the-math-behind-turboquant-so-you-dont-have-to/
4•philipkiely•34m ago•3 comments

Our Approach to the Model Spec

https://openai.com/index/our-approach-to-the-model-spec/
1•gmays•34m ago•0 comments

ParaLLM Tmux Claude Code Control Plane

https://github.com/free-soellingeraj/paraLlmDirectory
2•A-Aron•35m ago•0 comments

Disney cancels $1B OpenAI partnership amid Sora shutdown plans

https://arstechnica.com/ai/2026/03/the-end-of-sora-also-means-the-end-of-disneys-1-billion-openai...
4•doener•37m ago•1 comments

Reddit Shows Up in the SERP for B2B SaaS

https://foundationinc.co/lab/reddit-b2b-saas
1•rsimmonds•37m ago•1 comments

House GOP leaders punt controversial FISA vote to April

https://www.politico.com/live-updates/2026/03/20/congress/fisa-reauthorization-vote-april-0083787...
1•doener•38m ago•0 comments

Redefining Location Privacy: New Tools and Improvements for Android 17

https://android-developers.googleblog.com/2026/03/location-privacy.html
1•ingve•38m ago•0 comments

Call your lawmakers – No AI-powered warrantless surveillance of Americans

https://act.demandprogress.org/call/callpage-702-ai-surveillance/?link_id=1&can_id=3b2cebf422aaa3...
3•doener•38m ago•0 comments

Using a VPN May Subject You to NSA Spying

https://www.wired.com/story/using-a-vpn-may-subject-you-to-nsa-spying/
2•rawgabbit•40m ago•0 comments

Don't Trust, Verify

https://daniel.haxx.se/blog/2026/03/26/dont-trust-verify/
3•donutshop•42m ago•0 comments

The cron job that always succeeded and never worked

https://www.crontify.com/blog/the-cron-job-that-always-succeeded-and-never-worked
1•vincentabolarin•44m ago•0 comments

Neal Stephenson: Reflections on the Latest and Greatest Death of the Metaverse

https://nealstephenson.substack.com/p/my-prodigal-brainchild
1•cl42•44m ago•0 comments