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Bloom's two sigma problem (2020)

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

Comments

trane_project•8mo 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/

Ship Types, Not Docs

https://shiptypes.com/
2•rozenmd•2m ago•0 comments

Show HN: Itsyhome – Control HomeKit from your Mac menu bar (open source)

https://itsyhome.app
1•nixus76•2m ago•1 comments

60x1.com (2006)

https://web.archive.org/web/20060217220247/http://www.1111111111111111111111111111111111111111111...
1•nycdatasci•3m ago•0 comments

Minority births make up the majority in the US for the first time

https://abc7.com/post/minority-births-make-majority-us-first-time-new-study-finds/18516357/
1•lxm•4m ago•1 comments

Recieving Some 'Smart' Spam (2008)

https://ryandoyle.net/posts/recieving-some-smart-spam/
1•jruohonen•5m ago•0 comments

AI Coding Assistants Copying All Code to China

https://www.schneier.com/blog/archives/2026/02/ai-coding-assistants-secretly-copying-all-code-to-...
1•metahost•5m ago•0 comments

I'm still not using GUIs: A guide to the terminal (2019)

https://www.lucasfcosta.com/blog/terminal-guide-2019
1•speckx•5m ago•0 comments

Tasker: Spec-driven development with Claude Code

https://github.com/Dowwie/tasker
1•Dowwie•6m ago•0 comments

Show HN: Vibe code on your mobile device

https://www.npmjs.com/package/aigo
1•wakandan•6m ago•0 comments

The Crown Made of Leaves

https://worldsensorium.com/the-crown-made-of-leaves/
1•dnetesn•6m ago•0 comments

Can We Protect Science?

https://nautil.us/can-we-protect-science-1264227/
1•dnetesn•7m ago•0 comments

Ask HN: Can you beat my score of 862,294 points in today's PluriSnake puzzle?

1•amichail•8m ago•0 comments

Free Online Courses

https://alison.com
1•geox•9m ago•0 comments

From Human Ergonomics to Agent Ergonomics

https://wesmckinney.com/blog/agent-ergonomics/
1•jbredeche•10m ago•0 comments

Let the Arms Race Begin

https://www.nytimes.com/2026/01/30/opinion/nuclear-treaty-deal-start.html
2•nomilk•10m ago•1 comments

Hongdown: An opinionated Markdown formatter in Rust

https://github.com/dahlia/hongdown
1•PaulHoule•10m ago•0 comments

Google AI helped IDF drones with targeting in 2024 breaching its own policies

https://www.washingtonpost.com/technology/2026/02/01/google-ai-israel-military/
8•bhouston•12m ago•1 comments

Rubber Duck Debugging

https://en.wikipedia.org/wiki/Rubber_duck_debugging
4•vinhnx•13m ago•0 comments

Validity of the Single Processor Approach (1967)

https://dl.acm.org/doi/epdf/10.1145/1465482.1465560
1•jruohonen•13m ago•0 comments

Bad Apple, but It's MathML

https://conflor.es/bad-apple-mathml
2•bkardell•13m ago•2 comments

CMA proposes package of measures to improve Google search services in UK

https://www.gov.uk/government/news/cma-proposes-package-of-measures-to-improve-google-search-serv...
1•robtherobber•14m ago•0 comments

Offosm: OSM that you can access while you're offline

https://github.com/altilunium/offosm
1•altilunium•18m ago•0 comments

The Internet's Latest Lie: Moltbook

https://startupfortune.com/the-internets-latest-lie-moltbook-has-no-autonomous-ai-agents-only-hum...
2•lu5t•19m ago•0 comments

Reimplementing Tor from Scratch for a Single-Hop Proxy

https://foxmoss.com/blog/kurrat/
2•foxmoss•19m ago•0 comments

A premature software standard has led to billions in losses

https://hugo0.com/blog/how-erc20-held-back-blockchain-payments-a-decade
1•montenegrohugo•19m ago•1 comments

Intro to Cstml (Or: XML Meets JSON)

https://docs.bablr.org/guides/cstml/
1•todsacerdoti•20m ago•0 comments

The Dependency Layer in Digital Sovereignty

https://nesbitt.io/2026/01/28/the-dependency-layer-in-digital-sovereignty.html
2•speckx•20m ago•0 comments

Valued at 800M after less than two years,Vega eyes the path blazed by Wiz

https://www.calcalistech.com/ctechnews/article/sjs00wc2ubx
1•myth_drannon•20m ago•0 comments

Hybrid pricing is the default now – here's the data

https://www.solvimon.com/blog/hybrid-pricing-is-the-default-now-heres-the-data
2•arnon•21m ago•0 comments

Why software stocks are getting pummeled

https://www.economist.com/business/2026/02/01/why-software-stocks-are-getting-pummelled
3•andsoitis•22m ago•1 comments