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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/

Ask HN: Why agentic development stops from 2023

1•DmitriyBuchilin•37s ago•0 comments

Bateschess – Chess Analytics Feeding Stockfish Evals into LLM's

https://bateschess.com
1•wtbates99•2m ago•0 comments

The unlikely Vatican-Anthropic relationship that's reshaping AI ethics debate

https://religionnews.com/2026/05/22/why-anthropic-is-helping-unveil-the-popes-new-encyclical-on-ai/
1•gnabgib•5m ago•0 comments

US Towns Paid for Teachers and Cops to Use Weight-Loss Drugs. It Broke the Bank

https://www.wsj.com/us-news/u-s-towns-paid-for-teachers-and-cops-to-use-weight-loss-drugs-it-brok...
2•atestu•6m ago•0 comments

The AWS Service Quotas That Will Take Down Your Production at 3 Am

https://medium.com/@yalovoy/the-aws-service-quotas-that-will-take-down-your-production-at-3-am-an...
3•zero-ground-445•7m ago•1 comments

API proposed by Chrome: Declarative partial updates

https://developer.chrome.com/blog/declarative-partial-updates
2•theanonymousone•8m ago•0 comments

PageDrop – Share Single-Page HTML Creations Instantly

https://pagedrop.io/
1•user123•9m ago•1 comments

Valve import 50 tons of "game consoles" in the US, possibly Steam Machines

https://www.theverge.com/news/923461/valve-steam-machine-frame-deck-import-records-may-2026
1•TheJCDenton•12m ago•0 comments

E-Hiking Is Here. You Can Tell by My 1k-Watt Hips. Hypershell's X Ultra S

https://www.wsj.com/tech/personal-tech/robot-legs-hypershell-x-ultra-tested-e8a254e2
2•mataug•23m ago•0 comments

CES, a peer-to-peer system (25 years R&D, free)

https://github.com/fcecin/ces
3•fcecin•24m ago•1 comments

When does learning from data work (math starting from basic probability)

https://prateekchandrajha.github.io/vc-rademacher.html
1•alok-g•25m ago•0 comments

Discovery Platform for Startups

https://www.hyperspeed.work
1•Asadsangabi•26m ago•0 comments

A Transoceanic Jet at 35,000 Feet Is In Airspace That Doesn't Legally Exist

https://simpleflying.com/why-commercial-jet-flying-35000-feet-traveling-airspace-doesnt-legally-e...
2•Stratoscope•29m ago•0 comments

$COOKED – cooked or cooking? Fresh Solana memecoin, just launched on pump.fun

https://pump.fun/coin/E9wv3cReZpNmCLUpDsFeyAGkAVaxkfRUTQVdhKUYpump
1•advaithketha•30m ago•0 comments

The New Luddite Movement

https://www.ft.com/content/f5c96fa6-5b9b-4951-b71d-e32b3b57d8df
1•1vuio0pswjnm7•32m ago•2 comments

Ask HN: Looking for experienced web developer to commission

2•marysminefnuf•41m ago•0 comments

Jeremy Scott gets cheer after ripping up AI-written commencement speech

https://www.businessinsider.com/jeremy-scott-fashion-graduation-speech-commencement-ai-student-ba...
3•cdrnsf•42m ago•0 comments

Resident: Vibe coding firmware (our new sandbox library for ESP32 devices)

https://interconnected.org/home/2026/05/20/resident
1•bertwagner•42m ago•0 comments

Crafting Fluid Animations Across Apple Platforms with Phil Zakharchenko [video]

https://vimeo.com/1194916003
1•Austin_Conlon•43m ago•0 comments

Sycophantic AI decreases prosocial intentions and promotes dependence

https://www.science.org/doi/10.1126/science.aec8352
1•cdrnsf•44m ago•0 comments

ICE Awards $25M Iris-Scanning Contract to Bi2 Technologies

https://www.projectsaltbox.com/p/ice-awards-25-million-iris-scanning
6•cdrnsf•44m ago•0 comments

SBCL – Struct by Value Final

https://github.com/jbouwman/sbcl/pull/14/commits/95acdf13aecda724f2dba12c4fb056ac825c58c8
1•dismalaf•45m ago•0 comments

AI-fix: type one word after a failed command and it fixes it

https://github.com/anasmohiuddinsyed-bit/ai-fix
1•Anas1371•46m ago•0 comments

Plane Geometry: An Elementary Textbook by Shalosh B. Ekhad, XIV (Circa 2050)

https://sites.math.rutgers.edu/~zeilberg/GT.html
1•casey2•47m ago•0 comments

Browserling – free cross-browser testing tool

https://www.browserling.com
1•tester1•54m ago•0 comments

The shared recipe behind search: Images, Shazam and RAG

https://medium.com/@pablo.cael/the-shared-recipe-behind-search-images-shazam-and-rag-08fc93a276ac
1•pcael•58m ago•0 comments

Show HN: CurRant->Screw Google scourge, help people notice what is worth a look

https://currantfeed.cc/
1•PAndreew•58m ago•1 comments

AV2 Codec Looks Like It Will Be Officially Released Next Week

https://www.phoronix.com/news/AV2-Next-Week
2•breve•1h ago•0 comments

Inequality Fell as (Bronze Age) Mohenjo-Daro Grew

https://www.anthropology.net/p/inequality-fell-as-mohenjo-daro-grew
3•marojejian•1h ago•1 comments

My I3-Emacs Integration

https://khz.ac/software/i3-integration.html
13•nosolace•1h ago•1 comments