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Bloom's two sigma problem (2020)

https://nintil.com/bloom-sigma
8•Tomte•7mo ago

Comments

trane_project•7mo 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/

The Last Intellectual

https://www.nplusonemag.com/online-only/online-only/the-last-intellectual/
1•samclemens•1m ago•0 comments

Ask HN: Any real prompt injections in the wild?

2•singularity2001•2m ago•0 comments

TEE.fail: Breaking Tees via DDR5 Memory Bus Interposition

https://tee.fail
2•internet_points•2m ago•1 comments

Building a Real PDF Editor with Replit – A True Case

https://navi.tools/blog/building-a-online-pdf-editor-with-replit-ai-agent
1•zack119•2m ago•0 comments

My Gripes with Prolog

https://buttondown.com/hillelwayne/archive/my-gripes-with-prolog/
1•RebelPotato•4m ago•0 comments

The Golden Thread

https://roe.dev/blog/the-golden-thread
1•Andugal•4m ago•0 comments

Grok was finally updated to stop undressing women and children, X Safety says

https://arstechnica.com/tech-policy/2026/01/musk-still-defending-groks-partial-nudes-as-californi...
2•ndsipa_pomu•12m ago•0 comments

Opening the AWS European Sovereign Cloud

https://aws.amazon.com/blogs/aws/opening-the-aws-european-sovereign-cloud/
1•nickcotter•14m ago•0 comments

Ravers are swapping dancefloors for chessboards

https://www.huckmag.com/article/ravers-swapping-dancefloors-chess-boards-pieces-knight-sober-club...
1•mellosouls•14m ago•0 comments

The shameful defenestration of Tim [Peters]

https://chrismcdonough.substack.com/p/the-shameful-defenestration-of-tim
1•fabatka•22m ago•0 comments

Use reference documentation tools with AI agents

https://www.stromcapital.fi/blog/reference-documentation-tools
1•ronistrom•24m ago•0 comments

US tech giants allying with European far-right to strip back EU rules

https://www.brusselstimes.com/1916422/us-tech-giants-allying-with-european-far-right-to-strip-bac...
1•saubeidl•28m ago•0 comments

Q.ANT Second-Generation Photonic Processor to Power the Next Wave of AI and HPC

https://qant.com/press-releases/q-ant-unveils-its-second-generation-photonic-processor-to-power-t...
1•cgeier•29m ago•0 comments

Raspberry Pi's New AI Hat Adds 8GB of RAM for Local LLMs

https://www.jeffgeerling.com/blog/2026/raspberry-pi-ai-hat-2/
9•ingve•29m ago•1 comments

Free Online Calculators

https://freeonlinecal.com
1•eashish93•32m ago•0 comments

Laravel Livewire

https://livewire.laravel.com/
1•MarcellusDrum•32m ago•0 comments

Show HN: Win-link-router – route tel: links to WhatsApp (Windows)

https://github.com/karmaniverous/win-link-router
1•karmaniverous•35m ago•1 comments

OpenAI Partners with Cerebras

https://openai.com/index/cerebras-partnership/
1•rcarmo•36m ago•0 comments

Richard Linklater's love letter to the New Wave

https://observer.co.uk/culture/film/article/richard-linklaters-love-letter-to-the-new-wave
2•tintinnabula•36m ago•0 comments

Have Taken Up Farming

https://dylan.gr/1768295794
2•djnaraps•39m ago•0 comments

Show HN: Semantic search for MTG

https://mtgbuilder.ai/search
1•Strift•40m ago•0 comments

Zhipu AI breaks US chip reliance with first major model trained on Huawei stack

https://www.scmp.com/tech/tech-war/article/3339869/zhipu-ai-breaks-us-chip-reliance-first-major-m...
1•thunderbong•45m ago•0 comments

After Every Clue

https://www.thenation.com/article/society/seymour-hersh-cover-up/
1•petethomas•45m ago•0 comments

Passenger 6.1.1

https://blog.phusion.nl/passenger-6-1-1/
1•amalinovic•45m ago•0 comments

Move Over, ChatGPT

https://www.theatlantic.com/technology/2026/01/claude-code-ai-hype/685617/
2•petethomas•47m ago•0 comments

Ask HN: Are you worried, and care, about AI stealing your code/secrets?

1•fnoef•48m ago•4 comments

Raspberry Pi AI HAT+ 2: Generative AI on Raspberry Pi 5

https://www.raspberrypi.com/news/introducing-the-raspberry-pi-ai-hat-plus-2-generative-ai-on-rasp...
4•schappim•52m ago•0 comments

A letter to those who fired tech writers because of AI

https://passo.uno/letter-those-who-fired-tech-writers-ai/
1•theletterf•54m ago•0 comments

AI tools boost individual scientists but could limit research as a whole

https://www.nature.com/articles/d41586-025-04092-3
2•oliverulerich•58m ago•0 comments

Bags and the Creator Economy

https://steve-yegge.medium.com/bags-and-the-creator-economy-249b924a621a
1•casparvitch•1h ago•0 comments