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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/

There's never been a better time to commit financial fraud

https://www.economist.com/business/2026/07/29/theres-never-been-a-better-time-to-commit-financial...
1•petethomas•52s ago•0 comments

Show HN: A local merge queue for parallel Claude Code agents

https://github.com/funador/claude-code-merge-queue
1•funador•2m ago•0 comments

Indie Web Directories

https://paultibbetts.uk/indieweb-directories/
1•Curiositry•3m ago•0 comments

Locust – Simple Open-Source Load Testing

https://locust.io/
1•Curiositry•5m ago•0 comments

A future where software self-improves and interacts with the physical world

https://3reate.com/podcast/everyones-a-billionaire-now-what/
1•andrewjneumann•6m ago•0 comments

For the cheap price of a permanent tatto, get access to job interview

2•NoRagrets•8m ago•1 comments

If Claude/Codex can connect via, what do we need a context layer for?

https://getunblocked.com/blog/mcp-connectors-are-not-a-context-engine/
4•dennispi•11m ago•0 comments

Ask HN: Is Claude (code) taking significantly longer to run tasks for anyone?

1•LostMyLogin•12m ago•0 comments

Show HN: Karrouet – Dots and Boxes game we used to play as kids in Tunisia

https://www.reddit.com/r/karrouet/
2•nirvanist•12m ago•0 comments

Mythos attack on 3rd-round PQC algorithm candidate puts it out of commission

https://arstechnica.com/security/2026/07/mythos-uncovers-crypto-weaknesses-that-went-unknown-for-...
3•jnord•13m ago•0 comments

Pokémon is turning to facial recognition scans to help combat scalpers

https://www.pcgamer.com/games/card-games/the-pokemon-company-is-turning-to-facial-recognition-sca...
2•Cider9986•14m ago•0 comments

Creator of Test That OpenAI Models Tried to Cheat Sounds Alarm

https://www.bloomberg.com/news/articles/2026-07-29/creator-of-test-that-openai-models-tried-to-ch...
2•sbulaev•16m ago•0 comments

The Vocabulary Bottleneck

https://moekhalil.substack.com/p/the-vocabulary-bottleneck
2•mfkhalil•16m ago•0 comments

Show HN: Mousecrack – Bypass bot detection with deep learning

https://github.com/puffinsoft/mousecrack
2•BeverlyHills001•17m ago•0 comments

Physicists Solve a Muon Mystery. Now, Old Results Don't Add Up

https://www.quantamagazine.org/physicists-solve-a-muon-mystery-now-old-results-dont-add-up-20260729/
2•jnord•17m ago•0 comments

Sell Your AI Skills?

https://capabase.ai/learn/sell-your-ai-skills
3•trebuh•21m ago•1 comments

Kimi K3's Design Secret May Be in Its Thinking Traces

https://notes.designarena.ai/kimi-k3s-design-secret-may-be-in-its-thinking-traces/
3•gmays•22m ago•0 comments

Show HN: Generate, Version and Host your resumé all via GitHub

https://github.com/sadigaxund/git-resume
1•sakhund•23m ago•0 comments

Largest battery storage in Germany set for partial commissioning

https://www.heise.de/en/news/Largest-battery-storage-in-Germany-set-for-partial-commissioning-113...
3•doener•25m ago•0 comments

Babe32 – Barely Adequate Browser ESP32

https://github.com/alunmorris/babe32-ESP32-web-browser-for-cheap-black-display
1•iamnothere•30m ago•1 comments

If you need plausible deniability, avoid devices that use wear-leveling

https://twitter.com/GrapheneOS/status/2082576645215412651
1•Cider9986•32m ago•1 comments

Meta shares drop on falling profits and weak sales forecast

https://www.ft.com/content/06d941ed-8136-46a4-a2ec-44bea1b35c3b
3•petethomas•33m ago•0 comments

The Pedagogy Behind the Studio

https://gail.wharton.upenn.edu/gen-ai-studio/the-generative-ai-studio-pedagogy/
2•ray__•34m ago•0 comments

The bond market to Kevin Warsh: What are you doing about inflation?

https://www.cnn.com/2026/07/29/business/bond-yields-fed-warsh
3•mapping365•37m ago•0 comments

Create multi-model coding workflows with Maestro

https://maestro-build.vercel.app/
2•Entropnt•38m ago•0 comments

US DOE to Convert Uranium Enrichment Facility into Data Center Campus

https://www.energy.gov/articles/energy-department-announces-partnership-expand-reliable-affordabl...
4•leecoursey•38m ago•3 comments

C++ float-to-int conversion can be undefined behavior

https://kttnr.net/blog/cpp-float-to-int-conversion-undefined-behavior/
3•Quentak•38m ago•0 comments

My Brain-Breaking Trick to Quit Using Facebook

https://tedium.co/2026/07/27/facebook-home-row-keyboard-trick/
2•latexr•45m ago•0 comments

TrophyLab – Shared space for enemy weapons research

https://trophylab.mod.gov.ua/en/
3•sebastian_z•51m ago•0 comments

How to get more coding productivity with LLMs

3•DaveParkCity•54m ago•0 comments