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Bloom's two sigma problem (2020)

https://nintil.com/bloom-sigma
8•Tomte•12mo ago

Comments

trane_project•12mo 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/

Iran Moved Billions Through Binance to Fund Regime–Continuing into This Month

https://www.wsj.com/world/middle-east/iran-binance-crypto-military-e755b218
2•JumpCrisscross•1m ago•0 comments

Title: Tax season felt chaotic at my accounting firm, so I built this

https://taxassembly.com/
1•jaychooo•2m ago•1 comments

Why does it look like LLMs consistently overestimate implementation time?

1•bridgettegraham•2m ago•0 comments

Crypto and AI-Funded Super PACs Are Metastasizing

https://www.thenation.com/article/politics/crypto-ai-super-pacs-election-spending-big-tech-dark-m...
1•petethomas•11m ago•0 comments

'Broadview Six' defendants have all remaining charges dismissed

https://www.nbcchicago.com/news/local/chicago-politics/broadview-six-defendants-have-all-remainin...
1•petethomas•13m ago•0 comments

Consumer groups file complaint against Meta, TikTok and Google running scam ads

https://www.beuc.eu/press-releases/consumer-groups-file-complaints-against-meta-tiktok-and-google...
1•benoau•13m ago•0 comments

Merkel Urges EU to Keep Regulating Social Media Speech

https://reclaimthenet.org/merkel-eu-speech-regulation-censorship
1•Cider9986•14m ago•0 comments

Homemade robot fluff ball with a realistic eye

https://www.instagram.com/reel/DYnsNwlzxG5/
1•authorisedfrog•15m ago•0 comments

The AI Bubble – No One's Happy

https://nooneshappy.com/article/the-ai-bubble/
3•diebillionaires•19m ago•0 comments

FCC Extends Update Deadline for Foreign-Made Routers, Drones Until 2029

https://www.pcmag.com/news/fcc-extends-update-deadline-for-foreign-made-routers-drones-until-2029
1•gnabgib•20m ago•0 comments

Convert between 30 color formats in one tool (HEX, RGB, Tailwind, Flutter, etc)

https://colorcx.com/
1•hkdb•23m ago•0 comments

How you probably will find Satoshi

https://foxchapelresearch.substack.com/p/how-you-probably-will-find-satoshi
1•lalaland1125•23m ago•0 comments

Condé Nast expects search to become a single-digit of its traffic

https://searchengineland.com/conde-nast-search-single-digit-traffic-477358
1•gnabgib•28m ago•0 comments

Fork Your Dependencies

https://twitter.com/mitchellh/status/2057171518027887035
3•nreece•34m ago•0 comments

Stocks Are Not an Effective Inflation Hedge

https://financialpost.com/pmn/business-pmn/repeat-after-me-stocks-are-not-an-effective-inflation-...
2•littlexsparkee•36m ago•0 comments

The Rise of Build-to-Rent Housing

https://www.construction-physics.com/p/the-rise-of-build-to-rent-housing
2•JumpCrisscross•38m ago•0 comments

Trump's IRS "settlement" is not limited to $1.776B [video]

https://www.youtube.com/watch?v=tIBCjzz-bmk
1•mdnahas•38m ago•1 comments

Woman files lawsuit after arrest for Facebook post concerning Trinidad water

https://www.fox4news.com/news/woman-arrested-facebook-post-concerning-trinidad-water-poisoning
2•ki4jgt•39m ago•0 comments

San Francisco woman gets photographer's old number. It changes both their lives

https://www.nbcbayarea.com/news/local/bay-area-proud/san-francisco-woman-gets-photographers-old-p...
1•gnabgib•41m ago•0 comments

Making sure what your code does you think it does, with Vet

https://robocall.github.io//bouncing-balls
2•d0able•50m ago•0 comments

EHRC guidance puts women first, which may upset people

https://millihill.substack.com/p/ehrc-guidance-puts-women-first-which
1•appreciatorBus•52m ago•1 comments

Nginx-poolsip: new RCE 0-day and ASLR bypass in mainline Nginx

https://twitter.com/nebusecurity/status/2057071579876753643
2•negura•54m ago•1 comments

Yet Another AI Teammate

https://yaat.sh/
1•c4pt0r•56m ago•0 comments

JPMorgan Fights over Comic Books Locked in a Mississippi Warehouse

https://www.bloomberg.com/news/features/2026-05-21/jpmorgan-publishers-fight-over-bankrupt-comic-...
1•petethomas•1h ago•0 comments

Human Urine Becomes Option for Farmers in Fertilizer Supply Crunch

https://www.bloomberg.com/news/articles/2026-05-22/farmers-turn-to-human-urine-after-fertilizer-c...
2•petethomas•1h ago•0 comments

U.S. bears brunt of Israel's missile defense, Pentagon assessments show

https://www.washingtonpost.com/national-security/2026/05/21/us-bears-brunt-israels-missile-defens...
6•Teever•1h ago•1 comments

Reptyr: attach a running process to a new terminal (2011)

https://blog.nelhage.com/2011/01/reptyr-attach-a-running-process-to-a-new-terminal/
2•Curiositry•1h ago•0 comments

The San Francisco $10k treasure chest has been found

https://old.reddit.com/r/sanfrancisco/comments/1tjv11f/we_found_a_10000_treasure_chest
3•notknifescience•1h ago•0 comments

Tell HN: Gemini 3.5 Flash breaks in stupid ways

5•XCSme•1h ago•1 comments

Design Notes: Local Lifetimes for Kotlin

https://github.com/Kotlin/KEEP/blob/main/notes/0007-local-lifetimes.md
1•LelouBil•1h ago•1 comments