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Bloom's two sigma problem (2020)

https://nintil.com/bloom-sigma
8•Tomte•7mo ago

Comments

trane_project•7mo 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/

How Hackers Are Fighting Back Against ICE

https://www.eff.org/deeplinks/2026/01/how-hackers-are-fighting-back-against-ice
3•zzzeek•2m ago•0 comments

Hard Mode Veganism

https://giantmecha.substack.com/p/hard-mode-veganism
1•rafaepta•2m ago•0 comments

List of Open Problems in Sublinear Algorithms [pdf]

https://sublinear.info/files/sublinear_info_20170429.pdf
1•frozenseven•4m ago•0 comments

2 Shot by federal agents in Portland, police say

https://www.oregonlive.com/crime/2026/01/portland-police-responding-to-report-of-shooting-by-fede...
2•mickle00•6m ago•0 comments

Which programming languages are most token-efficient?

https://martinalderson.com/posts/which-programming-languages-are-most-token-efficient/
1•martinald•7m ago•0 comments

Russia Strikes Ukraine with IRBM Oreshnik Missile

https://twitter.com/osinttechnical/status/2009394085782860233
1•defly•8m ago•0 comments

Hacker News Title Patterns

https://projects.peercy.net/projects/hn-patterns/index.html
2•greenwallnorway•11m ago•1 comments

Debian GNOME team announces intent to remove GTK 2 in Debian 14

https://lists.debian.org/debian-devel/2026/01/msg00090.html
2•superkuh•11m ago•1 comments

Show HN: Roleplay-first chat UI for an OpenAI-compatible chat completions API

https://abliteration.ai/roleplay
1•abliterationai•13m ago•0 comments

Decentralized social media platforms unlock authentic consumer feedback

https://news.wsu.edu/press-release/2026/01/06/decentralized-social-media-platforms-unlock-authent...
2•hhs•14m ago•0 comments

iFixit: We Found the Worst Devices at CES 2026 [video]

https://www.youtube.com/watch?v=cxZgILm95BU
2•josephcsible•15m ago•0 comments

Expired certificate breaks macOS Logitech apps

https://arstechnica.com/gadgets/2026/01/expired-certificate-completely-breaks-macos-logitech-apps...
5•worik•18m ago•0 comments

Microsoft is losing the AI race, Copilot stuck at 1% market share (on web)

https://www.windowslatest.com/2026/01/09/is-microsoft-losing-the-ai-race-copilot-web-is-still-stu...
2•jinxmeta•20m ago•0 comments

OpenAI API and ChatGPT are down

4•themanmaran•22m ago•0 comments

Dendrometers challenge the 'moon wood concept' [pdf]

https://www.nature.com/articles/s41598-023-47013-y
1•thunderbong•22m ago•0 comments

Former Google CEO plans to singlehandedly fund a Hubble telescope replacement

https://arstechnica.com/space/2026/01/eric-schmidt-will-massively-invest-in-private-telescopes-in...
2•aenean•22m ago•0 comments

More than a quarter of adults worldwide could benefit from GLP-1 medications

https://medicalxpress.com/news/2026-01-quarter-adults-worldwide-benefit-glp.html
2•geox•24m ago•1 comments

Nature-inspired computers are shockingly good at math

https://newsreleases.sandia.gov/nature-inspired-computers-are-shockingly-good-at-math/
2•hhs•27m ago•0 comments

Mitsubishi Delica Is the Smallest Camper Van You'll See in 2026

https://robbreport.com/motors/cars/mitsubishi-delica-mini-active-camper-van-concept-1237497754/
3•tortilla•28m ago•0 comments

Ad 2025: Year in Review

https://sebastiangarren.com/2026/01/07/year-in-review-2025/
1•paulpauper•33m ago•0 comments

Show HN: Skip-O-Matic–Open-source hands-free YouTube ad skipper for safe driving

https://github.com/gowthamtadala/YouTube-skip-o-matic
1•gwthm•33m ago•1 comments

Russian attack hits infrastructure target in Western Lviv region

https://www.reuters.com/business/aerospace-defense/russian-attack-hits-infrastructure-target-west...
3•clanky•34m ago•0 comments

Amazon gives managers a new way to spot employees not spending time in office

4•cebert•34m ago•0 comments

Who Benefited from the Aisuru and Kimwolf Botnets?

https://krebsonsecurity.com/2026/01/who-benefited-from-the-aisuru-and-kimwolf-botnets/
2•todsacerdoti•36m ago•0 comments

A Low-Tech Blog Is a Must-Have Accessory

https://www.bloomberg.com/opinion/newsletters/2026-01-08/a-low-tech-blog-is-a-must-have-for-tech-...
3•petethomas•38m ago•0 comments

Ni8mare – Unauthenticated Remote Code Execution in N8n

https://www.cyera.com/research-labs/ni8mare-unauthenticated-remote-code-execution-in-n8n-cve-2026...
2•beny23•38m ago•0 comments

1. `Sanctum – Cryptographically deniable encrypted vaults with IPFS storage`

https://github.com/Teycir/Sanctum
1•teycirb•38m ago•1 comments

Ex_bread+butter review: Visited swamp, did not explode, gained 8lbs

https://www.exfatloss.com/p/ex_breadbutter-review-visited-swamp
2•paulpauper•38m ago•0 comments

Phage-resistant bacteria can still sink carbon to ocean floor

https://phys.org/news/2025-12-phage-resistant-bacteria-carbon-ocean.html
1•PaulHoule•39m ago•0 comments

I cannot stop yelling at Claude

https://www.theargumentmag.com/p/i-cant-stop-yelling-at-claude-code
3•paulpauper•39m ago•0 comments