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Bloom's two sigma problem (2020)

https://nintil.com/bloom-sigma
8•Tomte•11mo ago

Comments

trane_project•11mo 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 importance of people who care

https://rachelandrew.co.uk/archives/2026/04/21/the-importance-of-people-who-care/
1•speckx•3m ago•0 comments

Fisherian Runaway in the Modern Economy

https://www.rosshartshorn.net/stuffrossthinksabout/fisherian_runaway/
1•rossdavidh•5m ago•0 comments

Why XOR a register with itself instead of subtracting

https://devblogs.microsoft.com/oldnewthing/20260421-00/?p=112247
1•LorenDB•6m ago•0 comments

Lessons in Changemaking from a Peace Corps '40 Under 40'

https://www.whitman.edu//whitman-stories/whitman-magazine/winter-2026/good-food-and-good-business...
1•mooreds•6m ago•0 comments

Per-image PCA characterization of the Kodak image suite (PDF and JSON)

https://github.com/PearsonZero/kodak-pcd0992-statistical-characterization/tree/main/baseline
1•PearsonZero•9m ago•0 comments

I Climb Trees – Learn Deep Learning – From Simon JD Prince

https://www.iclimbtrees.com/courses
1•aanet•10m ago•1 comments

Prevalence of psychiatric morbidity among gender-referred adolescents

https://onlinelibrary.wiley.com/doi/10.1111/apa.70533?msockid=290a3115732d64a00ee427c0727065dc
3•danielam•14m ago•0 comments

Looking for an Apartment the Landing

2•baijan•14m ago•0 comments

OpenAI Image 2.0 claims to generate an existing image

https://bengarcia.dev/openai-image-2-0-claimed-to-generate-an-existing-image
2•hahahacorn•16m ago•0 comments

California has more money than projected after admin miscalculated state budget

https://www.kcra.com/article/california-more-money-than-projected-newsom-miscalculated-budget/710...
2•littlexsparkee•18m ago•0 comments

Zindex – Diagram Infrastructure for Agents

https://zindex.ai/
3•_ben_•19m ago•1 comments

Running Faster to Go Nowhere: The AI Adoption Trap

https://educatedguesser.substack.com/p/running-faster-to-go-nowhere-the
3•jerrygarcia•21m ago•0 comments

Attention Is All You Need

5•raunaksingwi•21m ago•0 comments

GPT Image 2 Launch

https://twitter.com/arena/status/2046670703311884548
3•twtw99•22m ago•0 comments

Usmnt players designed the boldest kits in generations for World Cup 2026

https://www.theguardian.com/football/2026/mar/16/usmnt-kits-world-cup-2026
1•PaulHoule•24m ago•0 comments

Flex Routing (EU and EFTA) for Copilot LLM Data Processing

https://learn.microsoft.com/en-us/microsoft-365/copilot/copilot-flex-routing
1•raffael_de•25m ago•1 comments

I don't want your PRs anymore

https://dpc.pw/posts/i-dont-want-your-prs-anymore/
2•speckx•25m ago•0 comments

Courier: Real-Time Messaging for ESP32

https://interconnected.org/home/2026/04/21/courier
1•beardicus•25m ago•0 comments

Bond: A new AI social network that turns memories into discoveries

https://www.bond.now/
1•johndavisonr•27m ago•0 comments

Nothing ever dies. It merely becomes embarrassing

https://www.experimental-history.com/p/nothing-ever-dies-it-merely-becomes
1•paulpauper•27m ago•0 comments

The New Age of Performance Anxiety

https://www.theatlantic.com/culture/2026/04/screen-people-stage-fright-performance-anxiety/686803/
1•paulpauper•28m ago•0 comments

What It's Like to Live with an Experimental Brain Implant

https://spectrum.ieee.org/bci-user-experience
1•digital55•28m ago•0 comments

Wearable health tech might be Tim Cook's greatest legacy

https://www.theverge.com/tech/915976/tim-cook-john-ternus-apple-watch-health-tech-wearables
1•paulpauper•28m ago•0 comments

The Fossils 1969

https://www.youtube.com/watch?v=bn1uhSS1cDo
1•indigodaddy•28m ago•0 comments

Amtrak's "1MB" National Route Map PDF Is a 574MB File

https://www.amtrak.com/train-routes
3•tech234a•29m ago•2 comments

Iconiq, Go-To Wealth Adviser for Tech's Elite, Is Putting Billions into AI

https://www.bloomberg.com/news/articles/2026-04-17/iconiq-advisor-to-tech-billionaires-emerges-as...
1•petethomas•29m ago•0 comments

The power keeping wages low

https://text.npr.org/g-s1-118071
1•mooreds•29m ago•0 comments

InvenTree: Open-source inventory management system with OpenAPI

https://github.com/inventree/InvenTree
1•matmair•31m ago•1 comments

Brex founder open sourced his stack for running the company through OpenClaw

https://github.com/brexhq/CrabTrap
1•ofabioroma•32m ago•1 comments

Cube Sandbox: Instant, Concurrent, Secure and Lightweight Sandbox for AI Agents

https://docs.cubesandbox.ai/
1•bpierre•32m ago•0 comments