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Bloom's two sigma problem (2020)

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

Comments

trane_project•8mo 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/

Coding Is When We're Least Productive

https://codemanship.wordpress.com/2026/01/30/coding-is-when-were-least-productive/
1•vinhnx•1m ago•0 comments

Show HN: Open Sandbox – an open-source self-hostable Linux sandbox for AI agents

https://github.com/diggerhq/opensandbox
1•iacguy•2m ago•0 comments

Testing AI agents on web security challenges

https://www.irregular.com/publications/testing-ai-agents-on-web-security-challenges
1•botacode•3m ago•0 comments

Goblins: Distributed, Transactional Programming with Racket and Guile

https://spritely.institute/goblins/
1•alhazrod•5m ago•0 comments

Show HN: I built a free PDF to Markdown converter

https://freeaitoolforthat.com/pdf-to-markdown
1•tamnv•8m ago•0 comments

AI agents now have their own Reddit-style social network, and it's getting weird

https://arstechnica.com/information-technology/2026/01/ai-agents-now-have-their-own-reddit-style-...
2•SaaSasaurus•11m ago•0 comments

Takeaway coffee cups release microplastic particles

https://phys.org/news/2026-01-takeaway-coffee-cups-thousands-microplastic.html
1•PaulHoule•14m ago•0 comments

L'actualité qui buzz: l'AGI en Vue dès 2026

https://nadiaaccompagne.substack.com/p/lactualite-qui-buzz-lagi-en-vue-des
1•NadiaAccompagne•15m ago•0 comments

U.N. Says It's in Danger of Financial Collapse Because of Unpaid Dues

https://www.nytimes.com/2026/01/30/world/americas/un-finances-collapse-debts.html
3•iancmceachern•15m ago•0 comments

The Saddest Moment: Distributed systems and the reliability illusion (2014)[pdf]

https://www.usenix.org/system/files/login/articles/13_mickens.pdf
1•teleforce•18m ago•0 comments

Epstein claimed Bill Gates had 'sex with Russian girls

https://mynorthwest.com/local/epstein-bill-gates-allegations/4196040
2•mellisacodes•19m ago•0 comments

Openclaw on Oracle's Free Tier: Always-On AI for $0/Month

https://ryanshook.org/blog/posts/openclaw-on-oracle-free-tier-always-on-ai-for-free/
1•RyanShook•19m ago•0 comments

Some Data Should Be Code

https://borretti.me/article/some-data-should-be-code
1•todsacerdoti•23m ago•0 comments

I am trying to create the most toxic social site on the internet

https://hugeweiner.com/
1•ZguideZ•24m ago•2 comments

ICE protester says her Global Entry was revoked after agent scanned her face

https://arstechnica.com/tech-policy/2026/01/ice-protester-says-her-global-entry-was-revoked-after...
4•mediumdeviation•24m ago•0 comments

Idle MMO

https://web.idle-mmo.com/
2•bdlowery•25m ago•0 comments

John Gurdon 1933–2025

https://www.nature.com/articles/s41587-026-03015-5
1•bookofjoe•30m ago•0 comments

2WAY: Software Without Lock-In

https://medium.com/@2W/2way-software-without-lock-in-f390d535ca69
1•livegnik•31m ago•0 comments

Errors in Database Systems, Eventual Consistency, and the CAP theorem (2010)

https://cacm.acm.org/blogcacm/errors-in-database-systems-eventual-consistency-and-the-cap-theorem/
1•teleforce•34m ago•0 comments

NumPy in C (2014)

https://jcastellssala.com/2014/02/01/npy-in-c/
3•fzliu•34m ago•2 comments

The abysmal state of Windows 11 Taskbar icons

https://github.com/tringi/papers/blob/main/windows-state-of-icons.md
1•Tringi•34m ago•1 comments

Show HN: OpenVideo – A self-hostable, open-source video editor in the browser

https://github.com/openvideodev/openvideo
2•snapmotion•38m ago•1 comments

Lumafield Scan of LTT TrueSpec Cable

https://voyager.lumafield.com/project/94fca565-4370-49d8-a5de-797de7c1c188
2•Kye•38m ago•0 comments

List of immigrant detention sites in the United States

https://en.wikipedia.org/wiki/List_of_immigrant_detention_sites_in_the_United_States
2•xqcgrek2•40m ago•0 comments

The Levels of Knowing a Thing

https://ismethandzic.com/blog/levels_of_knowing/
1•blueblahblue•41m ago•0 comments

FastAPI Voyager's new feature: application levle ER Diagram

https://www.fastapi-voyager.top/voyager/?tag=demo&mode=er-diagram
2•tank-34•43m ago•2 comments

First Independence Bank Assumes All Deposits of Metropolitan Capital Bank

https://www.fdic.gov/news/press-releases/2026/first-independence-bank-detroit-michigan-assumes-al...
3•ValentineC•56m ago•1 comments

What Is Data Literacy?

https://www.ibm.com/think/topics/data-literacy
1•teleforce•58m ago•1 comments

Goodbye Java, Hello Go

https://wso2.com/library/blogs/goodbye-java-hello-go
1•gtirloni•58m ago•2 comments

Halley's Comet wrongly named: 11th-century monk predates British astronomer

https://www.universiteitleiden.nl/en/news/2026/01/halleys-comet-wrongly-named-11th-century-englis...
1•geox•1h ago•0 comments