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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/

•22s ago

Warp for Desktop and Cloudflare for Teams

https://blog.cloudflare.com/warp-for-desktop/
1•bagana•31s ago•0 comments

Ads and tracking infiltrated TVs. Now they're coming for monitors

https://arstechnica.com/gadgets/2026/08/ads-and-tracking-infiltrated-tvs-now-theyre-coming-for-mo...
1•theanonymousone•2m ago•0 comments

Anthropic Gets Ready to Vie for Defense Contracts Again

https://prospect.org/2026/08/27/anthropic-reenlists-for-war-defense-department-ai/
1•h2si•3m ago•0 comments

Single file apps with Gleam and Bun

https://alistair.sh/gleam-bun-apps
1•crowdhailer•3m ago•0 comments

Why do OpenAI's GPT-2 weights beat mine? Part four: digging into dropout

https://www.gilesthomas.com/2026/08/why-do-openai-gpt2-weights-beat-mine-4-ift-dropout
1•gpjt•3m ago•0 comments

I said Route 53 was a database. Colin took it personally

https://shitposting.ai/r53fs/
1•cperciva•4m ago•0 comments

A philosopher's guide to thinking for yourself in an age built to think for you

https://bigthink.com/series/full-interview/philosophy-of-stupidity/
1•thunderbong•4m ago•0 comments

Ask HN: Was Quad9 ECS down for anyone else today at UTC 1PM?

1•opengrass•5m ago•0 comments

NASA Astronaut Jonny Kim Departs Agency to Continue Military Service

https://www.nasa.gov/news-release/nasa-astronaut-jonny-kim-departs-agency-to-continue-military-se...
1•MarcoDewey•5m ago•0 comments

Liquid Glass and the Mac's low priority

https://ilyabirman.net/meanwhile/all/liquid-glass-on-mac/
1•speckx•6m ago•0 comments

We bought the same "verified" lead list three times

https://verdictonly.com/
1•jonasun147852•7m ago•0 comments

OpenAI's Reboot

https://time.com/article/2026/08/26/openai-sam-altman-interview/
1•giuliomagnifico•8m ago•0 comments

FSF job opportunity: Systems Integration Administrator

https://www.fsf.org/news/2026-job-opportunity-fsf-systems-integration-administrator
1•infognu•9m ago•0 comments

Welcome to Needle Nation

https://www.nytimes.com/2026/08/17/well/needle-injections-peptides-glp1-drugs-botox.html
1•bookofjoe•9m ago•1 comments

The flat-pack skyscraper: how wood can shape the cities of the future

https://www.theguardian.com/news/ng-interactive/2026/aug/27/the-flat-pack-skyscraper-how-wood-can...
1•pseudolus•10m ago•0 comments

Rob Pike's 5 Rules of Programming

https://web.archive.org/web/20260314210910/https://users.ece.utexas.edu/~adnan/pike.html
1•r3trohack3r•10m ago•0 comments

PS1 type rendering in Godot 4

https://calinp.eu/blog/psx-type-rendering/
1•Funes-•11m ago•0 comments

London: Drawn Like a Painting

https://sheets.works/data-viz/london
1•lordbubbles•13m ago•0 comments

How to Deploy Your Model

https://htdym.sailresearch.com/
1•bobstax•15m ago•0 comments

Anthropic Announces Hardware Interface Standard (Model Hardware Standard, MHS)

https://twitter.com/AnthropicAI/status/2093038426140651791
4•zof3•17m ago•0 comments

History of the Atlantic Cable and Undersea Communications

https://atlantic-cable.com/
1•CaesarA•17m ago•0 comments

Poll: Are You Aphantastic

1•andrewla•18m ago•4 comments

A Training Cluster for This Economy

https://derekrodriguez.dev/a-training-cluster-for-this-economy/
1•dwrodri•19m ago•0 comments

Don't use a free iPhone that just turns up at your home

https://appleinsider.com/articles/26/08/27/psa-dont-use-a-free-iphone-that-just-turns-up-at-your-...
3•speckx•21m ago•0 comments

Show HN: Scrub Every Single Mention of Agents from the Browser

1•aihatterer•22m ago•0 comments

CIA Has a Gen Z Problem – Young Spies Are Just Not 'Feeling It'

https://spyscape.com/article/the-cia-has-a-gen-z-problem-young-spies-are-just-not-feeling-it
3•jumpocelot•24m ago•0 comments

Trump signs order to rename Lake Ontario as Lake America

https://www.reuters.com/world/us/trump-signs-order-rename-lake-ontario-lake-america-2026-08-27/
8•cdrnsf•24m ago•7 comments

ClickHouse winning this observability "war"?

https://clickhouse.com/blog/is-clickhouse-winning-the-observability-wars
1•gingenio•26m ago•0 comments

Nvidia Starts Pac as AI Chip Maker Builds DC Influence Force

https://news.bgov.com/bloomberg-government-news/nvidia-starts-a-pac-as-ai-chip-maker-buids-influe...
3•rarisma•27m ago•0 comments