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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/

Why Brilliant Mathematicians Choose Coding over Research and Where This May Lead

https://zenodo.org/records/21673213
1•epyre•25s ago•0 comments

Tree Style Tab

https://addons.mozilla.org/en-US/firefox/addon/tree-style-tab/
1•Velocifyer•1m ago•0 comments

Topical – A C# event handling library with strong async/await support

https://github.com/MonoSolid/topical
1•nathan-hello•1m ago•0 comments

Singer-songwriter Glen Hansard dies in Dublin crash

https://www.rte.ie/news/ireland/2026/0729/1585555-dublin-crash/
1•austinallegro•5m ago•0 comments

Anidachi – a shapeshifting new digital companion

https://anidachi.com
2•jjmccoolguy•7m ago•1 comments

Now Recruiting: Pirate

https://ae.studio/jobs/pirate
1•ksk23•8m ago•1 comments

Halcyon Dawn

https://madgoatlabs.com/halcyondawn/
1•hvs•9m ago•0 comments

They Stole Your Attention

https://moai.studio/blog/posts/they-stole-your-attention.html
1•ionwake•9m ago•0 comments

Microsoft Struggling with AI-Discovered Security Bugs

https://www.propublica.org/article/anthropic-mythos-microsoft-software-vulnerabilities
2•tysone•14m ago•0 comments

Advancing Science by Designing for Surprise

https://www.science.org/doi/10.1126/science.aej4257
1•paraschopra•15m ago•0 comments

Parsers don't have to be complicated

https://bkaradzic.github.io/posts/scanner/
1•signa11•22m ago•0 comments

The Groundhog Trap – Multi-model consensus and AI output failover framework

https://github.com/RickyARojas/The-Groundhog-Trap
1•rarojas•23m ago•0 comments

LLMs and Shaders

https://amitp.blogspot.com/2026/07/llms-and-shaders.html
1•yurivish•24m ago•0 comments

Parse Italian CEE balance sheets into structured financial data in 30s

https://www.parsio.it/
1•Iry-star•26m ago•0 comments

Hierarchical File Systems are Dead (2009)

https://dash.harvard.edu/server/api/core/bitstreams/7312037c-92e6-6bd4-e053-0100007fdf3b/content
1•Tomte•26m ago•0 comments

Designing Balanced Dice

https://blog.colonist.io/balanced-dice-designing/
1•kamphey•30m ago•0 comments

KOReader

https://koreader.rocks/
3•Cider9986•32m ago•0 comments

RazTint: Semantic terminal output for Python CLIs

https://github.com/razbuild/raztint
1•realrazdev•34m ago•0 comments

An Ode to Deluxe Paint

https://www.datagubbe.se/dpaint/
1•Bluestein•34m ago•0 comments

Show HN: Easy MQTT Handler 2: multi platform desktop tray to Home Assistant glue

https://github.com/AtmanActive/easy-mqtt-handler-2
2•atmanactive•35m ago•1 comments

The AI Hype Index: Unsexy AI

https://www.technologyreview.com/2026/07/29/1140795/the-ai-hype-index-unsexy-ai/
2•joozio•36m ago•0 comments

Starling: The first real desktop written by AI

https://starling.build/
4•signa11•38m ago•1 comments

We Hardened an AI Security Platform Against 16 Critical Vulnerabilities

https://aegis-security.higgsfield.app
3•zdotbirch•41m ago•0 comments

Zoye AI – The CRM you don't need to open

https://www.zoye.io
3•anizeu•42m ago•0 comments

Regulation of tobacco by the U.S. Food and Drug Administration

https://en.wikipedia.org/wiki/Regulation_of_tobacco_by_the_U.S._Food_and_Drug_Administration
2•amarcheschi•43m ago•0 comments

Show HN: I used D3/React to transform raw GitHub data into an interactive map

https://github.com/ThierryRakotomanana/GitCharta
3•ThierryRakt•43m ago•0 comments

The Vanishing Page: AI Firms Scan Then Destroy Rare Book Editions

https://dallasexpress.com/national/the-vanishing-page-ai-firms-scan-then-destroy-rare-book-editions/
3•throw0101a•43m ago•0 comments

AI companies buy, scan, shred rare and out-of-print books

https://www.news.com.au/technology/online/internet/ai-labs-buy-scan-shred-millions-of-rare-books/...
3•throw0101a•45m ago•0 comments

History remembers two Robert McNamaras

https://indevelopmentmag.com/numbers-man/
3•salonium_•45m ago•0 comments

National Security Determination Threat Posed by Foreign-Produced Robotic Devices [pdf]

https://www.fcc.gov/sites/default/files/robots-nsd.pdf
22•ellingsworth•50m ago•6 comments