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Bloom's two sigma problem (2020)

https://nintil.com/bloom-sigma
8•Tomte•10mo ago

Comments

trane_project•10mo 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/

Sperm Whales Speak with a Complex Alphabet and Even Have 'Vowels,' Study Finds

https://gizmodo.com/sperm-whales-speak-with-their-own-unique-alphabet-scientists-found-they-even-...
2•Brajeshwar•2m ago•0 comments

Dependencies Are Someone Else's Attack Surface

https://quodeq.ai/blog/supply-chain-attack-surface/
1•nicksergeant•2m ago•0 comments

Show HN: Sentinel – LLM browser automation using 10x fewer tokens

https://www.isoldex.ai/
1•isoldex•3m ago•0 comments

The Common AI Provider: LLM and AI Agent Support for Apache Airflow

https://airflow.apache.org/blog/common-ai-provider/
1•jonbaer•4m ago•0 comments

Apple's 'AI coding bootcamp' could help its engineers fix Siri

https://appleinsider.com/articles/26/04/15/apples-ai-coding-bootcamp-could-help-its-engineers-mak...
1•speckx•5m ago•0 comments

A system that maps relationships across mixed data sources

https://github.com/Lumen-Labs/brainapi2
1•Chrisszz•7m ago•0 comments

You Own Your Role, We Own the Outcome

https://pointc.co/you-own-your-role-we-own-the-outcome/
1•benwerd•7m ago•0 comments

Qwen3.6-35B-A3B:Now Open-Source

https://twitter.com/Alibaba_Qwen/status/2044768734234243427
1•alexellisuk•7m ago•1 comments

Using 100ms Rooms with HLS

https://andrewarrow.substack.com/p/using-100ms-rooms-with-hls
1•fcpguru•8m ago•0 comments

What hackers talk about when they talk about AI

https://arxiv.org/abs/2602.14783
1•foruhar•8m ago•0 comments

What happens when code becomes abundant

https://zendesk.engineering/what-happens-when-code-becomes-abundant-cc3239c4561b
1•satyrnein•9m ago•0 comments

Show HN: EDDI – Multi-agent AI engine where agent logic lives in JSON, not code

https://github.com/labsai/EDDI
1•ginccc•9m ago•0 comments

A time travel debugger for WebAssembly

https://github.com/friendlymatthew/gabagool/tree/main/gabagool-debug-adapter
1•friendlymatthew•11m ago•0 comments

Show HN: FortyOne OSS – an SMS-first multi-tenant AI assistant platform

https://github.com/glitchnsec/fortyone-oss/
1•glitchnsec•11m ago•1 comments

Rsloop – an event loop for asyncio written in Rust

https://github.com/RustedBytes/rsloop
1•whalesalad•12m ago•0 comments

Agentic Reasoning in Practice: Making Sense of Structured and Unstructured Data

https://www.databricks.com/blog/agentic-reasoning-practice-making-sense-structured-and-unstructur...
1•tanelpoder•12m ago•0 comments

Grand Jury May Expose Reddit User for ICE-Related Remarks

https://www.military.com/daily-news/2026/04/14/chilling-effect-grand-jury-may-expose-reddit-user-...
1•geox•14m ago•0 comments

Study: AI Use Appears to Have a "Boiling Frog" Effect on Human Cognition

https://futurism.com/artificial-intelligence/ai-boiling-frog-human-cognition-study
1•Leomuck•15m ago•0 comments

Show HN: Run AI tool calls in your user's environment and access local data

https://www.alien.dev/docs/quickstart
1•alongub•16m ago•0 comments

Game Devs Explain the Tricks Involved with Letting You Pause a Game

https://kotaku.com/video-game-devs-explain-how-pausing-works-and-sometimes-it-gets-weird-2000686339
2•speckx•16m ago•0 comments

Show HN: Self hosted fan out restreaming

https://github.com/muxshed/shed
1•paulgardiner•16m ago•0 comments

Show HN: ocrbase – PDF/IMG –>.MD/JSON Model-Agnostic OCR API

https://github.com/ocrbase-hq/ocrbase
1•adammajcher•17m ago•0 comments

Vompeccc: A Modular Completion Framework for Emacs

https://www.chiply.dev/post-vompeccc
1•chiply•17m ago•0 comments

Solar and wind energy are shielding world from worst impacts of Iran war

https://www.independent.co.uk/climate-change/news/solar-wind-energy-iran-war-hormuz-oil-gas-price...
1•robtherobber•17m ago•0 comments

Best VPNs in 2026 for privacy and security

https://blog.alcazarsec.com/posts/best-vpns-for-privacy-2026
1•alcazar•19m ago•0 comments

Data center boom meets resistance in Maine as lawmakers pass a yearlong freeze

https://apnews.com/article/data-centers-moratoriums-maine-artificial-intelligence-ai-aa63ba087d5a...
1•1vuio0pswjnm7•21m ago•0 comments

LLM agents for schematic and PCB generation in power electronics [pdf]

https://engrxiv.org/preprint/view/6706/version/8726
2•mmhetric•22m ago•0 comments

Debloating your async Rust even further

https://clouedoc.dev/articles/debloating-async-rust-more/
1•clouedoc•22m ago•0 comments

Show HN: Home Memory – A local DB of my house, down to cables and pipes

https://github.com/impactjo/home-memory
1•impactjo•23m ago•1 comments

Snap is cutting 1k workers in the latest tech layoff

https://www.latimes.com/business/story/2026-04-15/snap-is-cutting-1-000-workers-in-latest-tech-la...
2•1vuio0pswjnm7•24m ago•0 comments