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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/

National College Entrance Examination Collection - Math – China

https://github.com/deekur/gaokaomath
1•pm2222•7m ago•0 comments

Daytona is going closed source. Here's why

https://www.daytona.io/dotfiles/updates/daytona-is-going-closed-source
3•david_shi•16m ago•0 comments

Thermodynamic gravity explains cosmic acceleration without dark energy

https://phys.org/news/2026-06-thermodynamic-approach-gravity-cosmic-dark.html
1•stevenjgarner•25m ago•1 comments

Study on the effects of listening to podcasts on headphones vs. speakers

https://www.sciencedirect.com/science/article/abs/pii/S0749597822000176
1•Curiositry•27m ago•0 comments

Being a Dad

https://www.derekthompson.org/p/three-reasons-to-be-a-parent
1•Curiositry•32m ago•1 comments

AI Erodes a Legacy of Reading

https://molochinations.substack.com/p/ai-erodes-a-legacy-of-reading
5•domhudson•33m ago•1 comments

The Permission Slip

https://www.cringely.com/2026/05/28/the-permission-slip/
1•B1FF_PSUVM•43m ago•0 comments

Iterating Faster with TypeScript 7

https://code.visualstudio.com/blogs/2026/06/26/iterating-faster-with-ts-7
3•soheilpro•43m ago•0 comments

Show HN: Boot a tiny app-making OS inside an AI chat

https://hollingsworthd.github.io/RAu/
1•logn•44m ago•0 comments

The Impacts of Unauthorized Immigration on U.S. Labor and Housing Markets

https://www.dallasfed.org/research/papers/2026/wp2607
1•nradov•59m ago•1 comments

Enterprise AI customers pulling back from OpenAI and Anthropic as costs mount

https://qz.com/enterprise-ai-spending-openai-anthropic-roi-pullback-062626
3•toomuchtodo•1h ago•4 comments

Compiler Education Deserves a Revolution

https://thunderseethe.dev/posts/compiler-education-deserves-a-revoluation/
3•azhenley•1h ago•0 comments

I Co-Founded Wikipedia. Now I'm Banned for Life

https://www.thefp.com/p/larry-sanger-wikipedia-co-founder-banned
10•bko•1h ago•4 comments

Show HN: Tested – AI Tools Scored by a Panel of LLMs (Claude, GPT, Gemini, Grok)

https://trytested.com
1•pro_methe5•1h ago•0 comments

What's the value of the Biblical half shekel?

https://www.chabad.org/library/article_cdo/aid/673063/jewish/Whats-the-value-of-the-biblical-half...
2•teleforce•1h ago•1 comments

Show HN: GetBlocked – a local-only Chrome extension for blocking web trackers

https://github.com/alex-w-developer/GetBlocked/
7•sudo_cowsay•1h ago•3 comments

Indus civilisation reveals its volumetric system

https://www.thehindu.com/news/national/Indus-civilisation-reveals-its-volumetric-system/article16...
1•teleforce•1h ago•0 comments

Evolving the Node.js Release Schedule

https://nodejs.org/en/blog/announcements/evolving-the-nodejs-release-schedule
1•thunderbong•1h ago•0 comments

Greatgramps: A static site generator for GRAMPS family trees

https://bennuttall.com/blog/2026/06/greatgramps/
1•benn_88•1h ago•0 comments

Join .agent – Pre-Register Your Domain Free

https://agentcommunity.org/join
3•Anon84•1h ago•2 comments

The State of the AI Economy

https://intelligence.exponentialview.co/
2•marc__1•1h ago•0 comments

How a Star Wars Lego Dispute Triggered an Armed Police Raid in Utah

https://www.wsj.com/us-news/how-a-star-wars-lego-dispute-triggered-an-armed-police-raid-in-utah-c...
1•fortran77•1h ago•1 comments

Building While Becoming

https://pushapaula.substack.com/
2•paulawp•1h ago•0 comments

The Supreme Court's Era of Meaningless Rights

https://www.theatlantic.com/ideas/2026/06/supreme-court-decisions-unenforceable-rights/687713/
2•paulpauper•1h ago•0 comments

Show HN: I scanned 87 MCP servers for agent-authority hygiene – leaderboard

https://capframe.ai/leaderboard
1•euan21•1h ago•2 comments

Show HN: Hacker News on a Train Station Style Flip Board

https://popflame.quickish.space/hn-flipboard/
6•PaybackTony•1h ago•0 comments

The Duck Is Growing

https://gemenergyanalytics.substack.com/p/the-duck-is-growing
1•paulpauper•1h ago•1 comments

The State of the AI Economy

https://www.exponentialview.co/p/the-state-of-the-ai-economy
1•paulpauper•1h ago•0 comments

The formation of human populations in South and Central Asia

https://www.science.org/doi/10.1126/science.aat7487
1•teleforce•1h ago•0 comments

Show HN: Hatchr – Share Claude Designs with a public link

https://www.hatchr.link/
1•othmanosx•1h ago•0 comments