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Bloom's two sigma problem (2020)

https://nintil.com/bloom-sigma
8•Tomte•6mo ago

Comments

trane_project•6mo 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/

Show HN: CLI_Kanban – A Terminal-Based Kanban Board in Go

https://github.com/happytaoer/cli_kanban
1•TaoJiangx•29s ago•0 comments

Kopi Luwak

https://en.wikipedia.org/wiki/Kopi_luwak
2•thunderbong•8m ago•0 comments

Tom Stoppard, Award-Winning Playwright of Witty Drama, Dies at 88

https://www.nytimes.com/2025/11/29/theater/tom-stoppard-dead.html
1•mitchbob•11m ago•1 comments

The Markets Aggregating Political Reality

https://freesystems.substack.com/p/inside-the-markets-aggregating-political
1•gwintrob•15m ago•0 comments

Adolescence lasts into 30s – new study shows four pivotal ages for your brain

https://www.bbc.co.uk/news/articles/cgl6klez226o
1•ifh-hn•17m ago•0 comments

Show HN: I built a Web 1.0 budgeting tool, Budget Pro 3000

https://budgetpro3000.com
1•adrianvxyz•19m ago•0 comments

Do we need a new GitHub for AI coding era?

https://github.com/memovai/memov
1•ssslvky1•22m ago•2 comments

Welcome to My Andrew Lloyd Website

https://andrewlloydwebsite.neocities.org/
1•nxobject•23m ago•0 comments

Steven Pinker's Cheesecake for the Mind (1998)

http://cogweb.ucla.edu/Abstracts/Carroll_C98.html
1•lioeters•31m ago•0 comments

Show HN: iOS Old App Downloader 2 [video]

https://www.youtube.com/watch?v=xuX6alPg1yQ
1•txthinking•33m ago•0 comments

NFCGate flagged as malware even after multiple followups saying it isn't

https://github.com/nfcgate/nfcgate/issues/164
2•Antitoxic6185•35m ago•0 comments

Coupang says 33.7M customer accounts breached

https://www.reuters.com/sustainability/boards-policy-regulation/south-korean-e-commerce-firm-coup...
1•alephnerd•42m ago•0 comments

Cybertruck Drives 1,200 Miles FSD 14.2 Autonomously

https://gearmusk.com/2025/11/30/cybertruck-drives-1200-miles-fsd/
2•loog5566•47m ago•0 comments

LLM live ranking (Gemini, OpenAI, xAI)

https://metrik-dashboard.vercel.app/
1•mbouassa•51m ago•0 comments

Human See, Human Do

https://www.edwest.co.uk/p/human-see-human-do
1•Ariarule•53m ago•0 comments

What Are Microservices? (Seriously)

https://bykozy.me/blog/what-are-microservices-seriously/
1•byko3y•53m ago•0 comments

Aircraft Boneyard

https://en.wikipedia.org/wiki/Aircraft_boneyard
3•thunderbong•59m ago•0 comments

YouTube increases FreeBASIC performance (2019)

https://freebasic.net/forum/viewtopic.php?t=27927
3•giancarlostoro•1h ago•0 comments

Hierarchy of Engineering Talent

https://www.businessinsider.com/andrew-ng-talent-engineer-ai-hire-college-graduates-computer-scie...
1•MarcoDewey•1h ago•0 comments

What DFH / the Semantic Stack Does

https://github.com/colts70/The-Sematic-Stack
1•sematicstackdfh•1h ago•1 comments

A personal email newsletter is great

https://bryanhogan.com/blog/email-thank-you
3•bryanhogan•1h ago•0 comments

The Perpetual Student

https://domofutu.substack.com/p/the-perpetual-student
2•wjb3•1h ago•0 comments

Show HN: Ai2.compare Gists with a twist, compare AIs, save, share, explore chats

https://ai2.compare/gist/3f5b3197-bac2-4edb-838c-7535c8b85a10
1•ozgurozkan•1h ago•0 comments

Land, Debt, and Crises

https://arnoldkling.substack.com/p/land-debt-and-crises
2•Ariarule•1h ago•0 comments

Black Friday sets online spending record of $11.8B

https://techcrunch.com/2025/11/29/black-friday-sets-online-spending-record-of-11-8b-adobe-says/
4•MarcoDewey•1h ago•0 comments

Shopify lays off staff to keep team 'fast, sharp and focused'

https://ca.finance.yahoo.com/news/shopify-lays-off-staff-keep-211040075.html
9•mgh2•1h ago•2 comments

Zigbook Is Plagiarizing the Zigtools Playground

https://zigtools.org/blog/zigbook-plagiarizing-playground/
5•todsacerdoti•1h ago•0 comments

Minimal information needed to disambiguate rows

https://github.com/gojiplus/rowvoi
1•neehao•1h ago•0 comments

Giving Mars a Magnetosphere (2018)

https://medium.com/our-space/an-artificial-martian-magnetosphere-fd3803ea600c
4•Jach•1h ago•0 comments

Credifi: Instant unsecured loans powered by DeFi

https://credi.fi/
1•motasem323•1h ago•0 comments