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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/

Turning YouTube into Cloud Storage [video]

https://www.youtube.com/watch?v=l03Os5uwWmk
1•brandonli28•1m ago•0 comments

Retired SF firefighter dies from lung cancer after Blue Shield denies claims

https://abc7news.com/post/retired-san-francisco-firefighter-ken-jones-dies-lung-cancer-being-deni...
1•iancmceachern•2m ago•0 comments

Persistent Memory for Coding Agents

https://www.agent-memory.dev/
1•ankitg12•5m ago•0 comments

Hscli – A Scriptable Help Scout CLI for Terminals, CI, and AI Agents

https://wavyx.github.io/hscli/
1•wavyx•5m ago•0 comments

AgentRein – Our agent charged $5k by mistake, so we built a rollback enginer

https://www.agentrein.com/
1•AgentReinAi•7m ago•0 comments

The Complete Website Growth Strategy: SEO, GA4, Search Console, and Google Ads

https://medium.com/@allahverdiyev.tural/the-complete-website-growth-strategy-seo-ga4-search-conso...
1•turalall•8m ago•0 comments

Octopus genome and evolution of cephalopod neural, morphological novelties [pdf]

https://www.nature.com/articles/nature14668
1•thunderbong•10m ago•0 comments

Zig Structs of Arrays (2024)

https://andreashohmann.com/zig-struct-of-arrays/
1•Tomte•11m ago•0 comments

H-1B Crackdown on Indian Workers Erodes a Texas Real Estate Boom

https://www.bloomberg.com/features/2026-dallas-h1b-housing-market
1•petethomas•12m ago•0 comments

Time for a re-think of long-term antidepressant use

https://adelaide.edu.au/about/news/2026/time-for-a-re-think-of-long-term-antidepressant-use/
1•XzetaU8•14m ago•0 comments

Popular Weight-Loss Drug Found to Slow Biological Aging in Landmark Human Trial

https://scitechdaily.com/popular-weight-loss-drug-found-to-slow-biological-aging-in-landmark-huma...
1•SubiculumCode•15m ago•0 comments

'An equal and habitable world is possible' Vision for planetary survival

https://www.theguardian.com/environment/2026/jun/04/world-inequality-lab-equality-academics-plane...
1•defrost•16m ago•1 comments

Law professors prefer AI over peer answers 75% of the time [pdf]

https://law.stanford.edu/wp-content/uploads/2026/06/salinas_et_al.pdf
1•jlaneve•17m ago•0 comments

Typeface Specimens of Houston Mono

https://arslan.io/2026/05/31/typeface-specimens-of-houston-monotm/
1•wapasta•25m ago•0 comments

Is Respectful Feedback Dead?

2•likelybyte•28m ago•1 comments

Floating Point: The Origin Story

https://thechipletter.substack.com/p/floating-point-the-origin-story
1•klelatti•29m ago•0 comments

Opting Out of the AI Boom

https://www.bloomberg.com/opinion/newsletters/2026-06-03/opting-out-of-the-ai-boom
2•m-hodges•29m ago•0 comments

Optimistic Provide: How We Made IPFS Content Publishing 10x Faster

https://probelab.io/blog/optimistic-provide/
1•dennis-tra•30m ago•0 comments

Embodied Cognition and Agentic AI

https://lemire.me/blog/2026/05/28/embodied-cognition-and-agentic-ai/
1•signa11•32m ago•0 comments

Mixfont: State-of-the-art Font Generation AI Model

https://www.npmjs.com/package/mixfont
2•polaroid•32m ago•0 comments

Free Birth Chart, Today's Sky and Synastry Calculator – AstrologyWiki

https://www.astrologywiki.com/
1•Hardd•32m ago•0 comments

Telus Digital Breach Exposes Data

https://www.techradar.com/pro/security/telus-digital-confirms-breach-hackers-allegedly-stole-almo...
3•redmug•33m ago•0 comments

My Software North Star

https://kristoff.it/blog/north-star/
1•signa11•33m ago•0 comments

Privacy Is Not Dead: Beware the All-or-Nothing Mindset

https://www.privacyguides.org/articles/2025/02/17/privacy-is-not-dead/
3•Cider9986•35m ago•0 comments

The community-first software era

https://werd.io/the-community-first-software-era/
1•benwerd•40m ago•0 comments

A discovery about GCC's unidirectional rotation algorithm

https://devblogs.microsoft.com/oldnewthing/20260603-00/?p=112378
1•soheilpro•40m ago•0 comments

Trustcraft: How we build AI products at Vanta

https://www.vanta.com/resources/how-we-build-ai-products-at-vanta
1•hamelj•41m ago•0 comments

DeepSWE Audit: DeepSeek-v4-pro results are unreliable

https://github.com/datacurve-ai/deep-swe/issues/21
1•eunos•45m ago•0 comments

Can two hours of strength training a week reduce the risk of dying early?

https://www.bbc.co.uk/news/articles/c0r2lekenlpo
1•c-oreills•45m ago•1 comments

The Expansion-Compression Loop: AI-Mediated Cognitive Decoupling

https://philpapers.org/rec/HANTEL-2
1•hanhuiwen•48m ago•0 comments