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Bloom's two sigma problem (2020)

https://nintil.com/bloom-sigma
8•Tomte•7mo ago

Comments

trane_project•7mo 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/

Xmas cookies under X-rays

https://europeancorrespondent.com/en/r/xmas-cookies-under-xrays
1•giuliomagnifico•2m ago•0 comments

'60 Minutes' Report on Cecot That Bari Weiss Censored Is Now Internet Contraband

https://daringfireball.net/linked/2025/12/22/60-minutes-cecot-samizdat
2•MaysonL•3m ago•0 comments

Show HN: Luxury Yacht, a Kubernetes management app

https://github.com/luxury-yacht/app
1•johnj-hn•6m ago•0 comments

FDA approves first GLP-1 weight loss pill

https://www.novonordisk.com/news-and-media/news-and-ir-materials/news-details.html
1•jshchnz•6m ago•2 comments

Welcome to the Weird, Wonderful British Ritual of Panto Theater

https://www.bloomberg.com/news/articles/2025-12-22/welcome-to-the-weird-wonderful-british-ritual-...
2•helsinkiandrew•9m ago•2 comments

TempleOS: FlightSim and FirstPersonShooter [video] [REPOST 2015]

https://www.youtube.com/watch?v=sIbcud3E36s
1•felipelalli•12m ago•1 comments

iOS 26.3 Brings AirPods-Like Pairing to Third-Party Devices in EU Under DMA

https://www.macrumors.com/2025/12/22/ios-26-3-dma-airpods-pairing/
3•Tomte•13m ago•0 comments

Show HN: A vibe-coded database GUI

https://seaquel.app
2•mootoday•20m ago•0 comments

Scamp (Suite for Computer-Assisted Music in Python)

https://scamp.marcevanstein.com
1•bthallplz•22m ago•0 comments

60 Minutes prison segment postponed by CBS briefly viewed in Canada on Global TV

https://www.cbc.ca/news/canada/cbs-60-minutes-report-el-salvador-cecot-global-9.7025912
18•throwawaysleep•24m ago•2 comments

Show HN: We built an AI Humanizer to fix unnatural AI writing

https://dechecker.ai/ai-humanizer
1•GrammarChecker•24m ago•0 comments

Starlog Is Prolog with Nested Predicate Calls

https://github.com/luciangreen/prolog_to_starlog
1•luciangreen128•28m ago•0 comments

Frederick Douglass on the Book That Changed His Life

https://derekbishton.com/frederick-douglass-on-the-book-that-changed-his-life/
1•shrubble•36m ago•1 comments

After Power Outage, SF Wonders: Can Robot Taxis Handle a Big Earthquake?

https://www.nytimes.com/2025/12/22/us/waymo-san-francisco-power-earthquake.html
2•mikhael•37m ago•0 comments

Memelang: An Axial Grammar for LLM-Generated Vector-Relational Queries

https://arxiv.org/abs/2512.17967
1•bri-holt•38m ago•0 comments

Grok's Phone Number

https://x.ai/legal/faq#can-i-phone-text-or-message-grok
1•swatson741•41m ago•0 comments

The AI History That Explains Fears of a Bubble

https://time.com/7340901/ai-history-bubble-benchmarks/
1•chrchr•48m ago•0 comments

Unverified Rumor Trump Admin in Talks with Edward Snowden for a Full Pardon

https://x.com/i/trending/2003299623616549167
4•annon3845•50m ago•1 comments

Aisora2.com

https://aisora2.com/
1•businesszh•54m ago•0 comments

Yes, AGI Can Happen – A Computational Perspective

https://danfu.org/notes/agi/
1•gmays•56m ago•0 comments

Show HN: Nønos – a zero-state OS that runs in RAM

https://docs.nonos.systems/building-nonos-os/running-in-qemu
1•mighty_moran•59m ago•1 comments

AI Data Center Gold Rush Driven by 1000's of Newcomers

https://www.bloomberg.com/graphics/2025-ai-data-center-ownership/
1•1vuio0pswjnm7•1h ago•0 comments

Houdini and the Magic of Logistics

https://www.tandfonline.com/doi/full/10.1080/17530350.2025.2471601#abstract
1•Tomte•1h ago•0 comments

Your chatbot keeps a file on you

https://www.washingtonpost.com/technology/2025/12/22/ai-privacy-settings-chatgpt-gemini-claude-co...
3•1vuio0pswjnm7•1h ago•1 comments

Could Torontonians soon ride self-driving taxis? That's Waymo's plan

https://www.cbc.ca/news/canada/toronto/waymo-self-driving-taxis-toronto-9.7023379
2•amichail•1h ago•0 comments

Alloconda: Zig toolkit for writing CPython extensions

https://github.com/mattrobenolt/alloconda
2•mattrobenolt•1h ago•0 comments

Show HN: CineCLI – Browse and torrent movies directly from your terminal

https://github.com/eyeblech/cinecli
3•samsep10l•1h ago•1 comments

Unix "find" expressions compiled to bytecode

https://nullprogram.com/blog/2025/12/23/
2•signa11•1h ago•0 comments

In Which My Situation Is Discussed

https://ascii.textfiles.com/archives/5783
3•Tomte•1h ago•0 comments

South Atlantic Anomaly

https://en.wikipedia.org/wiki/South_Atlantic_Anomaly
1•sixthDot•1h ago•2 comments