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Bloom's two sigma problem (2020)

https://nintil.com/bloom-sigma
8•Tomte•6mo ago

Comments

trane_project•6mo 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/

Nvidia Isn't Enron – So What Is It?

https://www.wheresyoured.at/nvidia-isnt-enron-so-what-is-it/
1•s3graham•1m ago•0 comments

Gmail emoji reactions will be enabled by default starting Feb

https://www.prettyfwd.com/t/XOR4SAN3R1qitLNl5hHwNg/
1•Alex3917•13m ago•0 comments

Meesho Goes Public

https://www.ycombinator.com/blog/meesho-goes-public/
2•todsacerdoti•14m ago•0 comments

Dependable C

https://dependablec.org/
2•RossBencina•17m ago•0 comments

Collective Governance for AI: Points of Intervention

https://metagov.org/cg-ai/
1•ntnsndr•27m ago•0 comments

Linus Torvalds is 'a believer' in using AI to maintain code

https://www.zdnet.com/article/linus-torvalds-ai-tool-maintaining-linux-code/
1•CrankyBear•27m ago•1 comments

UK agrees higher drug prices to secure zero-tariff deal with US

https://www.chemistryworld.com/news/uk-agrees-higher-drug-prices-to-secure-zero-tariff-deal-with-...
1•geox•33m ago•0 comments

Most Frequent UI Errors App Developers Make

https://makeincoimbatore.substack.com/p/the-most-frequent-ui-errors-app-developers
1•swathid•33m ago•0 comments

Butterick's Practical Typography

https://practicaltypography.com/
1•cardamomo•34m ago•0 comments

Show HN: Built some privacy tools

https://privsen.com/
1•privsen•36m ago•0 comments

For App Developers: How to Identify and Fix Common Vulnerabilities

https://makeincoimbatore.substack.com/p/for-app-developers-how-to-identify
1•swathid•37m ago•0 comments

Cat Gap

https://en.wikipedia.org/wiki/Cat_gap
2•Petiver•38m ago•0 comments

Show HN: Numbered Headings Chrome Extension

https://chromewebstore.google.com/detail/numbered-headings/nnjoibaodhcgnbajfkabmdadmpnmbdih
1•bluedskim•48m ago•0 comments

Turbocharging LinkedIn's Recommendation Systems with SGLang

https://www.linkedin.com/blog/engineering/ai/turbocharging-linkedins-recommendation-systems-with-...
1•bbzjk7•49m ago•0 comments

Kevin Costner's resilience shines through life's challenges

https://figyj.blogspot.com/2025/12/kevin-costners-resilience-shines.html
1•FIGYJ•53m ago•0 comments

State Department orders return to Times New Roman

https://www.theguardian.com/us-news/2025/dec/10/trump-times-new-roman-font-return-state-department
3•yannis•56m ago•1 comments

A 'green gold rush' in the Amazon led to dubious carbon deals

https://news.mongabay.com/2025/11/how-a-green-gold-rush-in-the-amazon-led-to-dubious-carbon-deals...
1•PaulHoule•56m ago•0 comments

The 3-Ladder System of Social Class in the U.S. [pdf]

https://doriantaylor.com/file/3-ladder.pdf
2•petermcneeley•57m ago•0 comments

kernel.org git repositories

https://tor.source.kernel.org
1•1vuio0pswjnm7•58m ago•0 comments

Private Indices Are the New Public Indices

https://www.bloomberg.com/opinion/newsletters/2025-12-09/private-indices-are-the-new-public-indices
1•petethomas•1h ago•0 comments

Canadian accused in plot to export Nvidia's AI chips from US to China

https://nationalpost.com/news/world/canada-nvidia-high-tech-ai-chips-china
6•uladzislau•1h ago•0 comments

The Future of Business Intelligence Might Be Here

https://datamethods.substack.com/p/the-future-of-business-intelligence
1•zekrom•1h ago•0 comments

We Benchmarked the Best Video AI Models

https://www.gmicloud.ai/blog/modelmatch-technical-overview
1•CKMo•1h ago•0 comments

DuckDB-terminal: A browser-based SQL Terminal for DuckDB powered by Ghostty

https://github.com/tobilg/duckdb-terminal
3•smithclay•1h ago•0 comments

Computers Almost Killed the Chinese Language

https://www.youtube.com/watch?v=cPYK8s2OdMY
1•bane•1h ago•0 comments

'Source available' is not open source (and that's okay)

https://dri.es/source-available-is-not-open-source-and-that-is-okay
2•geerlingguy•1h ago•1 comments

How was TF2's art designed so well? [video]

https://www.youtube.com/watch?v=RJ5goMBD6oc
1•65•1h ago•0 comments

MIT researchers "speak objects into existence" using AI and robotics

https://news.mit.edu/2025/mit-researchers-speak-objects-existence-using-ai-robotics-1205
1•smurda•1h ago•0 comments

Uncommon Thinkers: Bluesky CEO Jay Graber seeding a decentralized digital world

https://www.geekwire.com/2025/uncommon-thinkers-bluesky-ceo-jay-graber-is-planting-the-seeds-for-...
2•schwentkerr•1h ago•2 comments

Why are "remote" jobs in late 2025 still limited to hiring in US/CA/UK/DE?

3•ftonato•1h ago•1 comments