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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/

No Big Deal

https://www.oliverburkeman.com/nobigdeal
1•Tomte•1m ago•0 comments

Doodle District

https://doodleshooter.vercel.app/
1•duck•2m ago•0 comments

Piracy Sites Disguise Video as Fonts to Abuse Cloudflare Caching

https://saimanish.com/blog/cloudflare-woff2-cache-abuse/
1•mertcangokgoz•2m ago•0 comments

Summit stunned as Philippine official receives Chinese note during speech

https://www.news.com.au/technology/innovation/military/incredible-moment-philippine-official-read...
1•Betelbuddy•5m ago•0 comments

MillenniumPrizeProblemBench

https://mppbench.com/
1•kelseyfrog•5m ago•0 comments

Updates to Our Terms of Service

https://privacy.x.com/en/blog/2026/terms-updates
1•duck•5m ago•0 comments

Apple Extends Free Satellite Access for iPhone 14, 15, 16

https://www.macrumors.com/2026/09/09/apple-extends-free-satellite-access/
1•tosh•5m ago•0 comments

Benchmarked how the latest LLMs perform on expert level medical questions

https://www.natomy.com/med-evals
2•toshvelaga•10m ago•1 comments

New Colorado Library Has Camping Gear

https://5280.com/new-anythink-nature-library-thornton/
1•jameslk•11m ago•0 comments

I Don't Want to Interact with Stochastic Parrots

https://ploum.net/2026-09-09-ai_policy.html
3•frizlab•11m ago•1 comments

Offline Image Compressor

https://imagepeel.com/
2•FrostDream•12m ago•2 comments

Book of Proof by Richard Hammack [pdf]

https://richardhammack.github.io/BookOfProof/Main.pdf
1•jxub•13m ago•0 comments

Building a place for LLM intelligence to persist

https://temm1e-labs.github.io/temm1e/
1•nagi_builds•13m ago•0 comments

PulseFix: API monitor that diagnoses 500s from Git diffs and opens PRs

https://github.com/salomh46-rgb/pulseapi-monitoring-saas
1•salomh46•15m ago•0 comments

A new deep learning model maps global methane emissions from space

https://blog.google/innovation-and-ai/models-and-research/google-research/mapping-global-methane-...
2•vertigoruntime•17m ago•0 comments

A $37 GLM 5.3 red team: the Alloy-modeled auth layer held, but two bugs outside

https://goodmem.ai/blog/red-teaming-goodmem-with-glm/
1•svcrunch•18m ago•0 comments

Show HN: I created a search engine to quickly find things in my source code

https://github.com/mrmcsoftware/SearchEngineSuite
1•mrmcsoftware•19m ago•0 comments

Apple Watch Hermès

https://www.apple.com/apple-watch-hermes/
1•corvad•22m ago•0 comments

CAA statement on passenger compensation following NATS disruption on 8 September

https://www.caa.co.uk/newsroom/news/caa-statement-on-passenger-compensation-following-nats-disrup...
1•haunter•22m ago•1 comments

Apple Watch Ultra 4

https://www.apple.com/apple-watch-ultra-4/
10•corvad•23m ago•2 comments

OpenAI names top US official from model testing agency to its board

https://www.ft.com/content/d73e188f-b906-42ec-8b91-db9729c9d2d9
2•Betelbuddy•25m ago•0 comments

Typst Makes Big Strides

https://lwn.net/Articles/1092993/
2•leephillips•25m ago•0 comments

AI might unmask your anonymous accounts

https://www.wsj.com/tech/ai/ai-anonymous-accounts-6dfd6d2e
3•bookofjoe•25m ago•1 comments

Conscience Is Not a Moral Oracle

https://www.overcomingbias.com/p/your-conscience-is-not-a-moral-oracle
1•paulpauper•25m ago•0 comments

America is still beating China in the AI race

https://www.noahpinion.blog/p/america-is-still-beating-china-in
2•paulpauper•25m ago•1 comments

AirPods 5

https://www.apple.com/airpods-5/
5•an0malous•25m ago•0 comments

Apple iPhone 18 Pro

https://www.apple.com/hk/en/iphone-18-pro/
3•ksec•25m ago•0 comments

We Can't Help Hurting People by Abandoning Basic Epidemiological Rigor

https://freddiedeboer.substack.com/p/we-cant-help-hurting-people-by-abandoning
1•paulpauper•25m ago•0 comments

iPhone Duo (Pricing)

https://www.apple.com/shop/buy-iphone/iphone-duo
2•ftchd•26m ago•0 comments

Apple Watch Series 12

https://www.apple.com/apple-watch-series-12/
1•ksec•26m ago•0 comments