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Bloom's two sigma problem (2020)

https://nintil.com/bloom-sigma
8•Tomte•6mo ago

Comments

trane_project•6mo 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/

Weird FFmpeg Use Cases

https://www.twitch.tv/videos/2635259036
1•implabinash•1m ago•1 comments

Nvidia CUDA Tile

https://developer.nvidia.com/cuda/tile
3•elkguy•3m ago•0 comments

PRC State-Sponsored Actors Use Malware Across Public Sector and IT Systems

https://www.cisa.gov/news-events/alerts/2025/12/04/prc-state-sponsored-actors-use-brickstorm-malw...
2•gslin•4m ago•0 comments

Vpternlog: Signed Saturation

https://wunkolo.github.io/post/2025/12/vpternlog-signed-saturation/
1•mfiguiere•4m ago•0 comments

Nanopositioning Metrology, Gödel, and Bootstraps

https://www.pi-usa.us/en/tech-blog/nanopositioning-metrology-goedel-and-bootstraps
1•nill0•4m ago•0 comments

Show HN: A fun sustainability marketplace for teams

https://createamarketplace.com/social-marketplace
1•cladian•5m ago•0 comments

Nano Banana Pro – AI Image Editor with Perfect Text Rendering and 4K

https://nanobanana.org
1•MikeMoh•9m ago•0 comments

Warner Bros has Entered Exclusive Deal Talks with Netflix

https://www.bloomberg.com/news/articles/2025-12-05/warner-bros-is-said-to-begin-exclusive-deal-ta...
1•mfiguiere•11m ago•2 comments

High Friction Learning Habits: Why Your "Second Brain" Is Failing

https://medium.com/@awabs/jit-learning-why-just-in-case-information-gets-deleted-by-your-brain-15...
1•Awab•13m ago•0 comments

NeuralRemaster: Phase-Preserving Diffusion for Structure-Aligned Generation

https://www.youtube.com/watch?v=pqmdsO1L45w
1•E-Reverance•21m ago•0 comments

Review: Surreal Numbers

https://signoregalilei.com/2025/11/26/review-surreal-numbers/
1•surprisetalk•24m ago•0 comments

A Man I Want to Meet the Most

https://chillphysicsenjoyer.substack.com/p/the-man-i-want-to-meet-the-most
1•surprisetalk•24m ago•0 comments

Rabbit Hole Learning

https://seated.ro/posts/rabbit-hole-learning.html
2•surprisetalk•24m ago•0 comments

The "Pretend to Work" Loophole of China [video]

https://www.youtube.com/watch?v=W7VJLipgiuQ
1•surprisetalk•25m ago•0 comments

Trump: Japan's 'Cute' Kei Cars Are Coming to America

https://www.motor1.com/news/780870/trump-kei-cars-coming-america/
4•harambae•29m ago•0 comments

Rethink Talks New Transcoding Report and Future of VVC, AV1, and Lcevc

https://www.streamingmedia.com/Articles/ReadArticle.aspx?ArticleID=172602
2•breve•31m ago•0 comments

Samsung unveils first multi-folding phone as competition set to heat up

https://www.reuters.com/business/media-telecom/samsung-unveils-first-multi-folding-phone-competit...
1•mgh2•31m ago•0 comments

Show HN: Vibe Commander

https://github.com/AvitalTamir/vibecommander
2•fatliverfreddy•44m ago•0 comments

Bcachefs 1.33.0 – Reconcile

https://lore.kernel.org/linux-bcachefs/slvis5ybvo7ch3vxh5yb6turapyq7hai2tddwjriicfxqivnpn@xdpb25w...
2•RGBCube•45m ago•0 comments

Updating My Bash Prompt

https://martianlantern.github.io/2025/11/updating-my-bash-prompt/
2•martianlantern•55m ago•0 comments

Robotgo v1.0.0 and Pro, easy build automation, auto test, computer use

https://github.com/go-vgo/robotgo/releases/tag/v1.0.0
2•veni0•56m ago•0 comments

South Korea developing app that shows real-time location of stalkers

https://www.bbc.com/news/articles/cp84y7jx2pzo
4•1659447091•56m ago•0 comments

The Long, Knotty, World-Spanning Story of String

https://hakaimagazine.com/features/the-long-knotty-world-spanning-story-of-string/
2•bookofjoe•58m ago•0 comments

Blogging in 2025: Screaming into the Void

https://askmike.org/articles/blogging-in-2025-screaming-into-the-void/
2•askmike•59m ago•0 comments

Apple iOS 27 to Be No-Frills 'Snow Leopard' Update

https://www.bloomberg.com/news/newsletters/2025-11-23/apple-ios-27-snow-leopard-like-quality-focu...
1•dlx•1h ago•1 comments

Billionaire UBS Clients Plot Private Equity Funds' Retreat

https://www.bloomberg.com/news/articles/2025-12-04/billionaire-ubs-clients-plot-retreat-from-priv...
1•petethomas•1h ago•0 comments

EU plans five AI gigafactories with 100k high-performance AI chips

https://the-decoder.com/eu-plans-five-ai-gigafactories-with-100000-high-performance-ai-chips/
3•Vaslo•1h ago•1 comments

Stacktower: An Accidental Deep Dive

https://stacktower.io/
3•signa11•1h ago•1 comments

CDC vaccine panel realizes again it has no idea what it's doing, delays big vote

https://arstechnica.com/health/2025/12/cdc-vaccine-panel-realizes-again-it-has-no-idea-what-its-d...
10•voxadam•1h ago•1 comments

Ukraine's 'Crazy' New Drone Tech [video]

https://www.youtube.com/watch?v=bsy5xzdKahU
1•thomassmith65•1h ago•0 comments