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Bloom's two sigma problem (2020)

https://nintil.com/bloom-sigma
8•Tomte•1y ago

Comments

trane_project•1y 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/

Cell therapy successful in treating rheumatoid arthritis

https://www.charite.de/en/service/press_reports/artikel/detail/cell_therapy_successful_in_treatin...
1•geox•53s ago•0 comments

Header-only C++20 sorting and selection for unsigned 32-bit and 64-bit integers

https://github.com/morishuz/RadixKit
1•oryx1729•2m ago•0 comments

George Orwell's essay on the atomic bomb anticipates Nineteen Eighty-Four

https://blog.plover.com/book/Orwell-atom-bomb.html
2•speckx•3m ago•0 comments

OpenGEMM: Open-source B200 GEMM kernels

https://github.com/aramesh10/OpenGEMM/tree/main
1•adityar2•5m ago•1 comments

Ask HN: How can I browse HN in dark mode?

4•herodoturtle•5m ago•2 comments

Show HN: Surraura – audio on your Mac in a simulated environment (Helps my ADHD)

1•jahala•6m ago•0 comments

Switching to GNU Guix: A Beginner's Perspective

https://whhone.com/posts/switching-to-gnu-guix/
2•signa11•6m ago•0 comments

Golang developers should try Odin

https://rm4n0s.github.io/posts/2-go-devs-should-learn-odin/
2•signa11•8m ago•0 comments

DeepDog 2: Outperforms Gemini and OpenAI deep research at a fraction of the cost

https://github.com/beneadie/deep_dog_2
2•beneadie01•9m ago•1 comments

Pennsylvania Data Center Limits Are a Threat to Gas Firms, Trade Group Says

https://www.bloomberg.com/news/articles/2026-09-11/pennsylvania-data-center-limits-are-a-threat-t...
1•cdrnsf•9m ago•0 comments

Did Trump Permanently Damage U.S.–Canada Relations? [video]

https://www.youtube.com/watch?v=lsRhHpwZfOk
2•mooreds•14m ago•1 comments

Flectar Mail – native cross-platform email client

https://flectar.com/mail/
1•bj-rn•15m ago•0 comments

Romania soccer introduces black card to 'combat abusive behaviour' from parents

https://www.nytimes.com/athletic/7586821/2026/09/12/football-black-card-referee/
3•thunderbong•15m ago•0 comments

The Smoital System – A method of timekeeping on Mars based on UTC

https://www.benjoffe.com/smoitus
1•mooreds•16m ago•0 comments

A fast, free, and open-source local AWS service emulator built for developers

https://floci.io/floci/
2•mooreds•17m ago•0 comments

Iris-mini – open search agent on Qwen3.6-35B-A3B

https://github.com/AllSpark-Research/Iris
1•iamsyr•17m ago•0 comments

Former CEO of AI Company Joonko Pleads Guilty to Securities Fraud

https://www.justice.gov/usao-sdny/pr/founder-and-former-ceo-artificial-intelligence-company-plead...
1•stikit•18m ago•0 comments

Recurrent Looped Transformer

https://yifanzhang-pro.github.io/recurrent-looped-tranformer/
2•meffmadd•19m ago•0 comments

Branch Ergonomic Chair Pro (Sega Edition) Review: Comfy, Not Boring

https://www.wired.com/review/branch-ergonomic-chair-pro-sega-edition/
1•joozio•22m ago•0 comments

Show HN: 1Baton – a no-code tool for chaining API calls

https://1baton.com
2•sagivy•25m ago•0 comments

MIT: Report on AI Use in Teaching, Learning, and Research Training

https://aiandeducation.mit.edu/
1•trauco•27m ago•0 comments

Mushroom leather may be ready for mass production

https://www.anthropocenemagazine.org/2026/09/plastic-free-fungus-based-leather-is-going-big/
2•speckx•30m ago•0 comments

David Sacks: OpenAI and Anthropic Don't Need Regulations to Pace Frontier Models

https://twitter.com/DavidSacks/status/2098973625252708460
23•kolanos•31m ago•2 comments

The Art and Science of Listening

https://www.gatesnotes.com/home/home-page-topic/reader/the-art-and-science-of-listening
1•andsoitis•32m ago•0 comments

A Cheesehead's View of the World

https://scottsumner.substack.com/p/a-cheeseheads-view-of-the-world
1•paulpauper•33m ago•0 comments

Rapidly scaling online storage to serve over 1B ChatGPT users

https://openai.com/index/scaling-storage-one-billion-users-part-one/
2•porridgeraisin•33m ago•0 comments

Iran 'blew the hell out of' base in Bahrain, acting Navy Secretary admits

https://taskandpurpose.com/news/navy-base-bahrain-iran-damage/
7•ilamont•33m ago•0 comments

Preventing AI Collusion: Are you paying attention now?

https://aiprospects.substack.com/p/preventing-ai-collusion-are-you-paying
1•paulpauper•34m ago•0 comments

A simple model of AI-aided economic growth

https://marginalrevolution.com/marginalrevolution/2026/09/a-simple-model-of-ai-aided-economic-gro...
3•paulpauper•34m ago•0 comments

Zuse Computer Museum Forced to Close

https://www.i-programmer.info/news/82-heritage/19142-zuse-computer-museum-forced-to-close.html
1•vitplister•36m ago•0 comments