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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/

Building Glimt

https://glimt.online/
1•Glimtonline•3m ago•0 comments

Math. Premium

https://calc.company
1•souvlakee•4m ago•0 comments

Show HN: Free ad-headline generator that labels the persuasion technique used

https://adcreator-ai.com/free/headline-generator
2•scholarnet-AI•11m ago•0 comments

Show HN: Modern C++ Build Tools for Module Feature

https://github.com/mcpp-community/mcpp
1•sunrisepeak•14m ago•0 comments

Show HN: Free 2-minute OSHA HazCom self-audit, no signup

https://sdsentry.0xpi.com/hazcom-self-audit.html
2•scholarnet-AI•14m ago•0 comments

Message your other Claude Code sessions

https://code.claude.com/docs/en/cross-session-messaging
1•adamfeldman•15m ago•0 comments

Hacked Amazon Echo Dot 2 and can run LLMs locally

https://www.reddit.com/r/homeassistant/s/X13006g0tS
1•albertoZurini•16m ago•0 comments

Black Hat USA 2026: The OpenAI–Hugging Face Incident [video]

https://www.youtube.com/watch?v=87DyyMV0kCY
1•mellosouls•20m ago•0 comments

Ginear – A Linear-like UI using GitHub Issues and Projects as the back end

https://github.com/leonschwanitz/ginear
1•leonschwanitz•21m ago•1 comments

A 15-minute backup audit for self-hosted homelabs

https://scholar.0xpi.com/blog/homelab-backup-audit-checklist
1•scholarnet-AI•22m ago•0 comments

I Built an MCP Server for JMeter Docs

https://qainsights.com/i-built-an-mcp-server-for-jmeter-docs-heres-how-to-connect-your-ai-agent-t...
1•qainsights•26m ago•1 comments

Cloudflare launches Kitesurf, a browser built for AI agents

https://techcrunch.com/2026/08/07/cloudflare-launches-kitesurf-a-browser-built-for-ai-agents/
2•justworks•28m ago•0 comments

Skill.md vs. Llms.txt: What Each File Does and When You Need Both

https://docsalot.dev/blog/skill-md-vs-llms-txt
1•mooreds•29m ago•0 comments

How to Support Rural Oregon Businesses Affected by Wildfire

https://reinventingrural.substack.com/p/how-to-support-rural-oregon-businesses
2•mooreds•31m ago•0 comments

MegaDev AI Workshop

https://mega.dev
1•beverett•38m ago•1 comments

Long Dark Blues

https://longdarkblues.com/
2•unacorner•38m ago•0 comments

Should AI labs be treated like the owners of dangerous animals?

https://www.economist.com/science-and-technology/2026/08/06/should-ai-labs-be-treated-like-the-ow...
6•reasonableklout•41m ago•2 comments

What counts as cooking? In defense of the store-bought sauce

https://iza.ac/posts/2026/06/what-counts-as-cooking/
1•mooreds•44m ago•0 comments

When Matt Taibbi Met Mike Benz

https://agentsofinfluence.substack.com/p/when-matt-taibbi-met-mike-benz
1•hn_acker•45m ago•0 comments

Classifying Capabilities (Extended Version)

https://arxiv.org/abs/2607.24504
2•matt_d•54m ago•0 comments

Annessaia – a sandboxed WASM app runtime with its own UI toolkit

https://github.com/vm100900/annessaia
1•virenmane•54m ago•0 comments

Is the IDE Dead?

https://textlog.cc/post/251
2•s-xyz•1h ago•0 comments

Solving Legal Problems with Dags

https://lexifina.com/blog/solving-legal-problems-with-dags
3•alansaber•1h ago•0 comments

Project Lana attempts to formalize hard to understand Mochizuki's IUT in Lean

https://anabelian.org/
2•ur-whale•1h ago•1 comments

Simplest CMS you'll ever need. Manage content right in your GitHub repository

https://pagescms.org/
3•Leftium•1h ago•0 comments

Atlas of Surveillance

https://www.atlasofsurveillance.org/
2•bookofjoe•1h ago•0 comments

The worlds longest song makes a chord change

https://www.msn.com/en-us/music/news/the-worlds-slowest-organ-concert-makes-a-chord-change/vi-AA2...
3•thatxliner•1h ago•0 comments

Am I the problem? Interviewing another team to find out

https://www.macchaffee.com/blog/2026/am-i-the-problem/
2•birdculture•1h ago•0 comments

A quick look at zero-knowledge proofs

https://bernsteinbear.com/blog/zkp/
4•tekknolagi•1h ago•1 comments

First JDK 28 Early-Access Build Including JEP 401: Value Objects

https://jdk.java.net/28/
1•mfiguiere•1h ago•0 comments