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Bloom's two sigma problem (2020)

https://nintil.com/bloom-sigma
8•Tomte•11mo ago

Comments

trane_project•11mo 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/

Lessons from Debugging GLM-5 at Scale

https://z.ai/blog/scaling-pain
1•pbowyer•2m ago•0 comments

Farewell to a Giant of Botany

https://nautil.us/farewell-to-a-giant-of-botany-1280409
2•Brajeshwar•3m ago•0 comments

Apple raises Mac Mini starting price $599 to $799, 256GB storage discontinued

https://www.macrumors.com/2026/05/01/mac-mini-now-starts-at-799/
1•pak•6m ago•0 comments

A GitHub for Maintainers

https://nesbitt.io/2026/05/02/a-github-for-maintainers.html
1•jamietanna•6m ago•0 comments

Disagreeing with Google, Postgres, Future Problems – Mike Stonebraker [video]

https://www.youtube.com/watch?v=YPObBOwIrHk
1•da02•9m ago•0 comments

Debian adds an SPF record to debian.org

https://lists.debian.org/debian-devel-announce/2026/04/msg00010.html
1•susam•12m ago•0 comments

Show HN: A marketplace for LLM-powered webapps earning on token margins

https://codeplusequalsai.com/dashboard
1•cryptoz•13m ago•0 comments

Elephant/Goldfish for Claude Code

https://github.com/vshvedov/elephant-goldfish
1•vladcodes•14m ago•1 comments

History of QR Code

https://www.qrcode.com/en/history/
1•helloworld•16m ago•0 comments

Aurora Systems relaunches, building and investing in ideas for 10%

https://aurorasystems.co.zw/services.html#startup-advisory
1•zayne_komichi•16m ago•1 comments

Hyperscalers are 4500 years old

https://av.codes/blog/hyperscalers-are-4500-years-old/
1•everlier•18m ago•0 comments

States rethink data center incentives amid costs and environmental concerns

https://www.politico.com/news/2026/05/02/data-centers-states-tax-incentives-00891184
1•WaitWaitWha•18m ago•0 comments

Automate Anything with Python and AI

https://codeonix.app/
1•hassananayi•20m ago•0 comments

This Month in Ladybird - April 2026

https://ladybird.org/newsletter/2026-04-30/
3•richardboegli•20m ago•0 comments

Seodata.dev – free search volume data to see search demand for your projects

https://www.seodata.dev/
2•alentodorov•23m ago•0 comments

Executive Order pushes fixed-price contracting but implementation questions loom

https://www.washingtontechnology.com/contracts/2026/05/trump-executive-order-pushes-fixed-price-c...
1•WaitWaitWha•24m ago•0 comments

Neanderthals ran 'fat factories' 125,000 years ago

https://www.universiteitleiden.nl/en/news/2025/07/neanderthals-ran-fat-factories-125000-years-ago
2•andsoitis•24m ago•0 comments

Great Writers "Tell" All the Time

https://freddiedeboer.substack.com/p/great-writers-tell-all-the-time
1•paulpauper•26m ago•0 comments

House Bill Cuts Federal Funds for Online Censorship

https://reclaimthenet.org/house-bill-cuts-federal-funds-for-online-censorship
3•anonymousiam•27m ago•0 comments

When People Say They Want to Send Their Kid to a Good School

https://freddiedeboer.substack.com/p/when-people-say-they-want-good-schools
2•paulpauper•28m ago•0 comments

If Nobody Builds It, Everybody Dies [pdf]

https://github.com/INBED/pub/releases/download/v1.1/I.N.B.E.D.pdf
3•Anon84•31m ago•1 comments

Why won't SQLite give back my disk space?

https://www.valiantlynx.com/blogs/why-wont-sqlite-give-back-my-disk-space
1•madshalden•35m ago•1 comments

Show HN: Clipmon is a macOS clipboard manager on steroids

https://github.com/c9-labs/clipmon
2•vednig•38m ago•0 comments

Narrow by Design: The Case for Composable AI Teams

https://substack.com/@ashconway/note/p-196059865
1•ashconway•38m ago•1 comments

Show HN: I built a dev workspace with AI as backbone

https://thekit.dev/
2•RaiyanYahya•46m ago•0 comments

Deepfakes Are Coming for Your Bank Account

https://www.theatlantic.com/technology/2026/05/chatgpt-images-deepfakes-fraud/687023/
4•saikatsg•47m ago•0 comments

Automating Hermitage to see how transactions differ in MySQL and MariaDB

https://theconsensus.dev/p/2026/05/02/automating-hermitage.html
2•zdw•50m ago•0 comments

We (US Navy) are like pirates... it's a profitable business

https://www.theguardian.com/world/2026/may/02/trump-us-navy-pirates-iran-blockade
3•hedayet•50m ago•0 comments

Pentagon to pull 5k troops from Germany, alarming Republican lawmakers

https://www.washingtonpost.com/national-security/2026/05/01/us-troops-germany-trump-merz/
2•alefalfa•52m ago•2 comments

Preliminary Findings on AI Automation from Worker Evaluations

https://arxiv.org/abs/2604.01363
4•saikatsg•52m ago•0 comments