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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/

The Cost of China's Free A.I

https://www.nytimes.com/2026/07/29/opinion/ai-china-us-free-models.html
1•lxm•37s ago•0 comments

The development pipeline is a production system

https://sundry.jerryorr.com/2026/07/31/development-pipeline-is-a-production-system
2•firefoxd•7m ago•0 comments

What Is MiniMax H3? Everything You Need to Know About the Hailuo 3.0 Video Model

https://minimaxh3.art/blog/what-is-minimax-h3
1•wangneo276•8m ago•0 comments

Saudi PIF's $55B EA deal gets EU approval under subsidy rules

https://www.reuters.com/legal/transactional/saudi-pifs-55-billion-ea-deal-gets-eu-approval-under-...
2•doughnutstracks•10m ago•0 comments

US lawmakers investigate DoorDash's use of Moonshot AI's Kimi K2.6 model

https://www.scmp.com/news/china/diplomacy/article/3362616/us-lawmakers-investigate-doordashs-use-...
3•fragmede•12m ago•1 comments

Situational Awareness Holdings Report

https://last10k.com/sec-filings/2045724
2•ijidak•15m ago•0 comments

History of Submarine Telegraphy

https://atlantic-cable.com/
2•walrus01•15m ago•0 comments

Doom on Emacs

https://github.com/minad/doom-on-emacs/tree/3830991bd3d69a9426498ee4a3dc8b55c8eb2eb5
2•signa11•20m ago•0 comments

AI broke writing as proof-of-thought

https://hereisyourbrain.substack.com/p/ai-generated-content-mind-virus
3•prdgl_daughter•28m ago•0 comments

Claude 5 family's hallucinations look a lot like internal Anthropic emails

https://github.com/alectrocute/dario-and-amanda-prompt/blob/main/outputs.md
2•arm32•30m ago•1 comments

Snapcompact: SoTA compaction – instant, local, free. Pick 3

https://stencil.so/blog/snapcompact
2•mji•30m ago•0 comments

The One That Says IT All

https://liljrxsoverign.substack.com/
2•liljr20•33m ago•0 comments

Bearded Vulture

https://en.wikipedia.org/wiki/Bearded_vulture
3•petethomas•37m ago•0 comments

Show HN: Open source React Native debugging studio

https://www.nativescope.dev
3•guigg•37m ago•1 comments

Why bowling alleys are replacing pins with strings [video]

https://www.youtube.com/watch?v=vhjp--rA9ho
2•hydrox24•38m ago•0 comments

Flint: A Visualization Language for the AI Era

https://microsoft.github.io/flint-chart/
6•vinhnx•38m ago•0 comments

Firefox Local Mode for Web Developers

https://firefox-source-docs.mozilla.org/devtools-user/local_mode/index.html
4•csmantle•43m ago•0 comments

Leopold Aschenbrenner built a $45B AI hedge fund – and lost most of it in days

https://www.cnbc.com/2026/07/31/leopold-aschenbrenner-situational-awareness-fund-fire-sale.html
4•gilfoyle_7•43m ago•1 comments

Abora OS – A NixOS based distro

https://www.aboraos.org/
2•gallon-poem•50m ago•0 comments

I Work at Micro-Center (1985) [video]

https://www.youtube.com/watch?v=0ywbd76wVtk
2•doublepg23•51m ago•1 comments

Snapchat joins other popular platforms in fight against 'AI slop'

https://www.bbc.com/news/articles/c77g6dm5pr8o
2•vinni2•1h ago•0 comments

How Did America Get Its Name? (2016)

https://blogs.loc.gov/loc/2016/07/how-did-america-get-its-name/
2•thunderbong•1h ago•0 comments

Show HN: Random OS I made using C

https://github.com/NoTheIdiot/WindogeOS
4•notheidiot•1h ago•1 comments

Show HN: I built a Python obfuscator that keeps production traces debuggable

https://github.com/zhurong2020/pyobfus
2•znhskzj•1h ago•1 comments

Upgraded melly, our agent on sleek

2•silisleek•1h ago•0 comments

Google is actively hiring someone to save the world from AGI/ASI

https://www.google.com/about/careers/applications/jobs/results/95635593379095238
7•arm32•1h ago•1 comments

The Math Superstar Who's Terrified of AI–and Just Took a Job at OpenAI

https://www.wsj.com/tech/ai/openai-jacob-tsimerman-fields-medal-ai-safety-391d0f79
4•berkeleyjunk•1h ago•0 comments

Protecting the Nation's Communications Systems from Cybersecurity Threats

https://www.federalregister.gov/documents/2026/07/31/2026-15601/modernization-of-the-nations-aler...
2•Jimmc414•1h ago•0 comments

De mora luminis: Roemer's discovery 350 years later

https://arxiv.org/abs/2607.28512
2•Jimmc414•1h ago•0 comments

What's in a Name: A Guide to the Many Flavours of TeX

https://www.overleaf.com/learn/latex/Articles/What%27s_in_a_Name%3A_A_Guide_to_the_Many_Flavours_...
2•smitty1e•1h ago•0 comments