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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/

GitHub Is Becoming a Giant AI Code Dump

https://maref.cc/en/blog/vibe-coding-crisis/
3•Athena-maref•4m ago•0 comments

Chinese supercomputer powered by homegrown chips tops global ranking

https://www.cnn.com/2026/06/24/tech/china-tops-world-supercomputer-ranking-intl-hnk
2•A_D_E_P_T•4m ago•0 comments

Outer Product as an Introduction to APL and a Pretty Cool Thing in General (2020) [video]

https://www.youtube.com/watch?v=WlUHw4hC4OY
1•tosh•7m ago•0 comments

The End of the Craftsman?

https://schrottner.at/2026/06/24/The-End-of-the-Craftsman.html
1•aepfli•10m ago•1 comments

Show HN: Project Cherub – New TempleOS Fork. Early Build ISO and Future Plans

1•Rubinoslaw•11m ago•0 comments

Gen Z earning more than millennials did at the same age, says thinktank

https://www.theguardian.com/money/2026/jun/22/gen-z-earning-more-millennials-same-age-resolution-...
3•mmarian•13m ago•0 comments

"Guerilla War Against Computers" (1969)

https://time.com/archive/6637500/frustrations-guerrilla-war-against-computers/
1•28304283409234•13m ago•0 comments

It's Well Past Time for a Four-Day Workweek

https://jacobin.com/2026/06/schor-four-day-workweek-labor
1•robtherobber•21m ago•0 comments

GloriousEggroll's Proton has been rebased on Proton 11

https://github.com/GloriousEggroll/proton-ge-custom/releases/tag/GE-Proton11-1
2•d3Xt3r•21m ago•0 comments

Seedance 2.5

https://www.seedance2ai.app/tools/seedance-2-5
1•linzhangrun•24m ago•0 comments

Anyone else feels many LLMs are heavily biased towards consumerism these days?

2•pyeri•26m ago•0 comments

We found a bug in the hyper HTTP library

https://blog.cloudflare.com/hyper-bug/
1•vsgherzi•28m ago•0 comments

Today's Office – The Location Independent Lifestyle (A 2018 Retrospective)

https://www.ssp.sh/blog/the-location-independent-lifestyle/
1•zazuke•29m ago•0 comments

Best Chrome Bookmark extension, Visually organized grid and ultra fast search

https://chromewebstore.google.com/detail/bookmarkr-—-visual-bookma/lianafemkbankodapdaokiefoffi...
1•mnomansd•34m ago•0 comments

The State of Startups 2026 – Survey results

https://supabase.com/state-of-startups
1•fmerian•35m ago•0 comments

What makes a good VM for a programming language?

https://github.com/dominexmacedon-docs/lopo-docs
1•dominex•35m ago•2 comments

Show HN: Hikaru Labs – A browser-based image toolbox

https://hikarulabs.xyz
2•CFBL•40m ago•1 comments

In Retrospect: Science – The Endless Frontier

https://www.nature.com/articles/466922a
4•teleforce•42m ago•0 comments

Jfsendit – A dead-simple way to send files straight from one browser to another

https://jfsendit.com/
1•coinfused•43m ago•0 comments

Google's YouTube settles social media addiction case with teen

https://www.bbc.co.uk/news/articles/cly81g7x73po
2•vinni2•44m ago•0 comments

New WingTask with TaskWarrior 3 sync support

https://wingtask.com/announcing-new-wingtask
1•Cort3z•47m ago•0 comments

Show HN: SQL MCP Server – 61.37% on DataAgentBench with GLM-5.2

https://github.com/gagarwal304/databridge
1•gagarwal123•48m ago•0 comments

Workdir: Open-source sandboxes for AI agents

https://workdir.dev/
1•handfuloflight•48m ago•0 comments

Digital Dugnad

https://digitaldugnad.eu/en/
1•bronlund•49m ago•0 comments

"Be Yourself" Only Works for People Who Aren't Annoying

https://www.cartoonshateher.com/p/be-yourself-only-works-for-people
2•Michelangelo11•49m ago•1 comments

SHOW HN: RainBreak App Mac – The AI doesn't need a break. But you do

https://rainbreak.franzai.com/
1•franze•50m ago•0 comments

What Happens When Claude Tests Your Web Application?

https://searchzee.com/blog/ai-agent-tests-web-application
1•rajkverma123•50m ago•0 comments

Crypto 2026 Accepted Papers

https://crypto.iacr.org/2026/acceptedpapers.php
1•altro•57m ago•0 comments

Show HN: dk

https://github.com/hq6/dk
1•hq6•59m ago•0 comments

The Importance of Establishing Boundaries with Your DOM: Stealing 1Password Keys

https://guyfischman.com/posts/1password-delegation/
3•guyfischman•1h ago•0 comments