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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/

External Clock Generation on RTX 50 Series

https://www.xtremesystems.us/post/external-clock-generation-on-rtx-50-series
1•mfro•4m ago•0 comments

Virtual Precision Clock

https://mitxela.com/projects/vpc
1•8organicbits•4m ago•0 comments

The American Missile Crisis

https://research.contrary.com/report/the-american-missile-crisis
1•JumpCrisscross•9m ago•0 comments

Texas Adds Another Solar Farm as Ercot Grid Demand Soars

https://electrek.co/2026/06/01/texas-adds-another-huge-solar-farm-ercot-grid-demand-soars/
2•m463•20m ago•0 comments

Perfect randomness realised for the first time

https://ethz.ch/en/news-and-events/eth-news/news/2026/05/perfect-randomness-realised-for-the-firs...
1•jonbaer•21m ago•0 comments

User-Replaceable Batteries Are Coming Back in a Big Way

https://www.theverge.com/column/939026/user-replaceable-batteries-eu-european-union-legislation
2•m463•23m ago•0 comments

Rsync and Outrage

https://medium.com/@tridge60/rsync-and-outrage-d9849599e5a0
5•st3fan•23m ago•0 comments

More police turn to simple drones clever effort to catch illegal e-bike riders

https://electrek.co/2026/06/02/more-police-turn-to-simple-drones-in-clever-effort-to-catch-illega...
1•Bender•24m ago•0 comments

China's Rise in Drug Development Looms over U.S.

https://www.nytimes.com/2026/05/30/business/china-lung-cancer-drugs-asco.html
1•lxm•25m ago•0 comments

PostgreSQL CLI Setup

https://sandrock.co.za/carl/2026/05/my-postgresql-cli-setup/
1•chthonicdaemon•25m ago•1 comments

The Four Signals of AI Observability

https://thoughtbot.com/blog/the-four-signals-of-ai-observability
1•iroha1203•26m ago•0 comments

HHS is overriding peer review to require changes to research scope, design

https://www.science.org/content/article/exclusive-hhs-now-weighing-science-nih-grants
2•SubiculumCode•32m ago•0 comments

NC lawmakers target 'addictive' apps in teen social media bill

https://www.wral.com/news/nccapitol/north-carolina-lawmakers-weigh-social-media-restrictions-unde...
2•01-_-•34m ago•0 comments

Florida sues OpenAI and CEO Altman, claiming company concealed serious risks

https://apnews.com/article/sam-altman-openai-lawsuit-florida-396d70c5a2d9bae7e95a8ee9adaef836
3•1vuio0pswjnm7•34m ago•0 comments

The case for memory safe desktop Linux distribution

http://fiedzia.blogspot.com/2026/06/the-case-for-memory-safe-desktop-linux.html
2•fiedzia•36m ago•0 comments

Vaping alters genes linked to cancer, heart and lung disease

https://www.dailymail.com/health/article-15866661/Vaping-genes-cancer-heart-lung-disease.html
1•Bender•36m ago•0 comments

The Bluesky firehose if everyone was messaging you

https://hah.spencer.place/messages
2•4lx87•37m ago•0 comments

GameStop Discloses First Quarter 2026 Results

https://investor.gamestop.com/news-releases/news-details/2026/GameStop-Discloses-First-Quarter-20...
1•mmh0000•39m ago•0 comments

A Whole Generation Seems to Be Using 'POV' Wrong

https://www.nytimes.com/2026/06/01/magazine/pov-gen-z-linguistics.html
2•lxm•43m ago•0 comments

Show HN: AI-Powered PDF to Markdown Converter

https://pdftomdconverter.com
1•QingWu•44m ago•2 comments

Google's $80B equity raise adds to that giant AI sucking sound

https://www.ft.com/content/2fe1fff9-f619-4a25-9b30-05bdc3bdea70
2•1vuio0pswjnm7•44m ago•0 comments

Back to the Metal

https://betocmn.com/blog/back-to-the-metal/
2•bertdc•45m ago•0 comments

AI Corporate Governance and Ben & Jerry's Risk

https://corpgov.law.harvard.edu/2026/05/11/ai-corporate-governance-and-ben-jerrys-risk/
1•ChrisArchitect•47m ago•1 comments

More harmful than helpful': young people sour on AI

https://www.ft.com/content/73fc962e-ce68-4521-9c5d-841a666eed10
3•1vuio0pswjnm7•47m ago•1 comments

Show HN: LiteHarness – One SDK for Claude Agent, OpenAI Agent, Pi AI

https://github.com/LiteLLM-Labs/lite-harness
1•ij23•57m ago•1 comments

Scott Pelley fired at CBS News after blowups with Bari Weiss,60 Minutes producer

https://www.foxnews.com/media/scott-pelley-fired-cbs-news-after-blowups-bari-weiss-new-60-minutes...
11•osnium123•1h ago•0 comments

Show HN: SeaTicket – AI agent that resolve issues from GitHub, email and forums

1•Daniel-Pan•1h ago•1 comments

The New Internet Era

https://blogs.newardassociates.com/blog/2026/titit-llms-and-internet.html
1•damowangcy•1h ago•0 comments

At the Autograph Show

https://oldster.substack.com/p/at-the-autograph-show
1•NaOH•1h ago•0 comments

Tab Tender – Split the bar tab in seconds

https://tabtender.app
1•MitchelRut•1h ago•1 comments