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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/

AI is turning protectionists into free traders

https://www.economist.com/finance-and-economics/2026/11/05/ai-is-turning-protectionists-into-free...
1•andsoitis•1m ago•0 comments

Foo

http://www.foo.com/
1•abhishekjiitr•1m ago•0 comments

Post-AI Computer Science – Volume 4

https://thingspool.net/shards-of-sanity/page-4.html
1•architsch•1m ago•0 comments

How We Got Duo Support in NetNewsWire

https://netnewswire.blog/2026/10/16/how-we-got-duo-support.html
1•robin_reala•3m ago•0 comments

Show HN: Logo Deal – Logos anyone can edit with text

https://logo.deal/
2•vednig•4m ago•0 comments

US believes Nvidia's Huang had romantic relationship with alleged Chinese spy

https://www.ft.com/content/a55a2a22-4479-4f93-a445-6147a5c6d790
1•Betelbuddy•5m ago•0 comments

Activists across Europe prepare two days of protests against datacentres

https://www.theguardian.com/world/2026/nov/05/activists-across-europe-protests-ai-against-datacen...
1•Betelbuddy•5m ago•1 comments

Working with Designers

https://www.seangoedecke.com/working-with-designers/
2•Brajeshwar•6m ago•0 comments

Porting the Simulation Engine into Rust

https://www.modeloop.app/blog/porting-the-simulation-engine-into-rust
1•lucamark•6m ago•0 comments

New App: StockVirtue

https://play.google.com/store/apps/details?id=com.vamigo.stockvirtue&hl=en_US
1•vamigoin•7m ago•0 comments

The Joy of Coding Is Gone: My Honest Take on AI

https://www.youtube.com/watch?v=gIvVjepvdMg
1•thelifeline•9m ago•0 comments

4.2-Kiloyear Event May Have Helped Cause the Collapse of Egyptian Old Kingdom

https://www.iflscience.com/the-42-kiloyear-event-may-have-helped-cause-the-collapse-of-the-egypti...
2•Bluestein•11m ago•0 comments

Show HN: GC2 (Geo Compute Cloud)

https://gc2.io/
2•mhoegh•14m ago•0 comments

F/OSS Comics

https://fosscomics.com/all_posts/
1•vismit2000•15m ago•0 comments

Show HN: Pentagonize, a connect 5 game with sliding rows and columns

https://pentagonize.com
1•nzmattgrant•19m ago•0 comments

Show HN: Stripe revenue, right in your notch

https://notchrevenue.com/?lang=en
2•bingbing123•22m ago•0 comments

Microsoft requiring DMARC now or just us?

https://list.sys4.de/hyperkitty/list/mailop@mailop.org/thread/SSF3AS4J7HGO4DGDG5BRSM2VQMTUCDV7/
2•speckx•25m ago•0 comments

If You Were an Engineer

https://sorzel.com/notes/if-you-were-an-engineer
2•cjhisey•28m ago•0 comments

Show HN: Web Potions – let ChatGPT or Claude restyle the web you browse

https://github.com/leofritsch/web-potions
1•leofree•28m ago•1 comments

Meridian – a web browser for macOS built on GPUI and Servo

https://op.tngl.io/meridian/
1•frostbyte7•29m ago•0 comments

Show HN: Personaforge – Make your portfolio out of your resume in 3 minutes

https://personaforge-omega.vercel.app
1•aayush_7_11•30m ago•0 comments

Weekend at Bernie's II

https://nesbitt.io/2026/11/06/weekend-at-bernies-ii.html
2•jamietanna•30m ago•0 comments

Show HN: Online Scoreboard

https://wescoreboard.com/
1•artiomartiom•31m ago•0 comments

Pull-request previews for every client branch, without a Vercel bill

https://railyard.run/blog/pr-previews-per-client-branch-no-vercel-bill/
1•RailyardRun•32m ago•0 comments

AI is a technological version of the Homeric songs

https://www.economist.com/by-invitation/2026/10/28/ai-is-a-technological-version-of-the-homeric-s...
1•Anon84•33m ago•0 comments

Twelve things you could build on a live index of internet radio

https://tuneping.com/notes/twelve-things-to-build-on-a-live-radio-index/
1•victorbuilds•36m ago•0 comments

AirPods 3 head tracking on Linux, and first documentation of Apple RemoteHID

https://github.com/starman-tech/mousepods
1•theanonymousone•37m ago•0 comments

EU and UK spent millions on Israeli phone cracking tech despite risks

https://statewatch.org/news/2026/november/eu-and-uk-spent-millions-on-israeli-phone-cracking-tech...
3•jruohonen•39m ago•1 comments

How the Phone Book Taught America to Ask for Answers

https://daily.jstor.org/how-the-phone-book-taught-america-to-ask-for-answers/
1•bookofjoe•40m ago•0 comments

Climate skeptics used AI to review their work. It told them they were biased

https://thebulletin.org/2026/10/climate-skeptics-used-ai-to-review-their-work-it-told-them-they-w...
1•jruohonen•41m ago•0 comments