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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/

Cisco open sources toolkit for tracing AI model lineage

https://blogs.cisco.com/ai/model-provenance-kit
1•hsanthan•3m ago•0 comments

Swival: A coding agent for any model

https://swival.dev/
1•handfuloflight•4m ago•0 comments

Uantifying Voter Biases in Online Platforms: An Instrumental Variable Approach

https://arxiv.org/abs/1910.00757
1•smooke•5m ago•0 comments

Steep fertilizer and fuel prices could squeeze US farmers for months to come

https://www.wpr.org/news/steep-fertilizer-fuel-prices-squeeze-us-farmers-months-come
1•_tk_•6m ago•0 comments

Show HN: Vanilla-scroll-sky: CSS-only modern scroll-driven storytelling sections

https://github.com/ulrischa/vanilla-scroll-sky
1•ulrischa•6m ago•0 comments

Migrating from Supabase

https://blog.val.town/blog/migrating-from-supabase/
2•gurjeet•9m ago•0 comments

Do we even need a better GitHub?

https://www.aviator.co/blog/do-we-even-need-a-better-github/
2•tonkkatonka•9m ago•0 comments

Stable Specialization in Rust

https://goldstein.lol/posts/stable-specialization/
1•PaulHoule•9m ago•0 comments

Claude will use all SpaceX Colossus datacenter capacity

https://twitter.com/NVIDIAAI/status/2052082412994383936
3•kristianpaul•12m ago•1 comments

When do we know someone has died

https://blog.computationalcomplexity.org/2026/05/when-do-we-know-someone-has-died.html
1•speckx•13m ago•0 comments

Multipath Reliable Connection spec published

https://www.opencompute.org/documents/ocp-mrc-1-0-pdf
1•jabl•13m ago•0 comments

Olaf: Bringing an Animated Character to Life in the Physical World

https://arxiv.org/abs/2512.16705
1•programd•13m ago•0 comments

Bell Laboratories Record (August 1941) [pdf]

https://www.worldradiohistory.com/Archive-Bell-Laboratories-Record/40s/Bell-Laboratories-Record-1...
2•zuhayeer•14m ago•0 comments

MIT’s virtual violin offers luthiers a new design tool

https://arstechnica.com/science/2026/05/mits-virtual-violin-offers-luthiers-a-new-design-tool/
2•smushy•14m ago•0 comments

Free and Simple Chess Analysis

https://www.g6chess.com/
1•mantegna•14m ago•1 comments

Supercomputer networking to accelerate large scale AI training

https://openai.com/index/mrc-supercomputer-networking/
1•dataking•15m ago•0 comments

xAI will be dissolved as a separate company

https://twitter.com/elonmusk/status/2052105373621121284
1•break_the_bank•16m ago•0 comments

Learning Advanced JavaScript (2008)

https://johnresig.com/apps/learn/
1•downbad_•18m ago•1 comments

Gypsy Woman Hardware Live Jam (2023) [video]

https://www.youtube.com/watch?v=_SSXALxZ3Hs
1•elvis70•19m ago•0 comments

Mainframe modernization is no longer optional for the AI-driven enterprise

https://thenewstack.io/open-mainframe-enterprise-modernization/
2•rbanffy•21m ago•0 comments

Let's Get EFF to Accept Monero Donations

https://monerocoalition.org/lets-get-eff-to-accept-monero-donations/
5•Cider9986•22m ago•0 comments

You can make more money buying MTG cards than the lottery

https://meadow.cafe/blog/0073-you-can-make-more-money-buying-mtg-cards-than-the-lottery/
2•speckx•25m ago•0 comments

Go-joker – a much faster Clojure interpreter written in Go and WASM

https://rcarmo.github.io/projects/go-joker/
7•rcarmo•25m ago•0 comments

ZAYA1-8B: Frontier intelligence density, trained on AMD

https://www.zyphra.com/post/zaya1-8b
3•mseri•26m ago•0 comments

Shadow – find which prompt change broke your AI agent

https://github.com/manav8498/Shadow
2•manav8498•27m ago•0 comments

Upcoming El Niño: The World Is About to Get a Preview of Life in 2035

https://www.nytimes.com/2026/05/06/opinion/el-nino-climate.html
5•puttycat•29m ago•0 comments

Planting Trees and Dreaming of Software

https://jerodsanto.net/2026/05/planting-trees-software-dreams/
1•herbertl•30m ago•0 comments

Hackers Hate AI Slop More Than You Do

https://www.wired.com/story/cybercriminals-are-complaining-about-ai-slop-flooding-their-forums/
9•aledevv•31m ago•1 comments

An aggregate of payment usage data released by businesses that accept Monero

https://monerostats.org/
1•Cider9986•31m ago•0 comments

A Fundamental FX Factor Model

https://dm13450.github.io/2026/04/19/A-Fundamental-FX-Factor-Model.md.html
1•dm13450•32m ago•0 comments