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Bloom's two sigma problem (2020)

https://nintil.com/bloom-sigma
8•Tomte•7mo ago

Comments

trane_project•7mo 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/

How to stalk your ex; made easier than ever [video]

https://www.youtube.com/watch?v=cK6WyS2JipQ
1•vo2maxer•37s ago•0 comments

Discount Gambit

https://longform.asmartbear.com/discount-gambit/
1•mooreds•5m ago•0 comments

Kreuzberg: Extract text and metadata from a wide range of file formats

https://github.com/kreuzberg-dev/kreuzberg
1•thunderbong•6m ago•0 comments

Show HN: UCP Demo – Interactive Demo of the Universal Commerce Protocol

1•init0•9m ago•0 comments

Ethical Principles in the Creation of Artificial Minds

https://nickbostrom.com/ethics/aiethics
1•maxloh•13m ago•0 comments

Human-in-the-loop NLP as a first-class control layer

https://github.com/rado-stack/human-in-the-loop-nlp
1•rado-stack•14m ago•0 comments

Digital Euro 'only defence' against deepening US control of money

https://www.ft.com/content/b0602271-cd43-4a6e-a96d-c8166a05d040
3•rorylawless•14m ago•1 comments

I Made My Own Programming Language

https://github.com/Youg-Otricked/QuantumC
1•YougOtricked•20m ago•0 comments

Universal Commerce Protocol

https://ucp.dev/
1•qainsights•23m ago•1 comments

Was Philip K. Dick a Madman or a Mystic? (2016)

https://www.publishersweekly.com/pw/by-topic/industry-news/tip-sheet/article/70857-was-philip-k-d...
3•debo_•23m ago•0 comments

React Router has XSS Vulnerability · CVE-2025-59057

https://github.com/advisories/GHSA-3cgp-3xvw-98x8
1•maxloh•25m ago•0 comments

JEP Draft: Java Thread Sanitizer

https://openjdk.org/jeps/8208520
1•mooreds•28m ago•0 comments

Diagnosing performance with dotnet-trace and Perfetto

https://dfamonteiro.com/posts/using-dotnet-trace-with-perfetto/
1•lalitmaganti•29m ago•0 comments

High RAM prices mean record-setting profits for Samsung and other memory makers

https://arstechnica.com/gadgets/2026/01/high-ram-prices-mean-record-setting-profits-for-samsung-a...
4•walterbell•29m ago•0 comments

Show HN: dc-input - interactively fill dataclass instances via the command line

https://github.com/jdvanwijk/dc-input
1•janebelvanwijk•31m ago•0 comments

Ask HN: Cursor (LLM) Costs

1•anonyfox•31m ago•1 comments

Turntiles, an NYT style word game I made for my parents

https://github.com/wheybags/turntiles
1•todsacerdoti•33m ago•0 comments

New tech and tools for retailers to succeed in an agentic shopping era

https://blog.google/products/ads-commerce/agentic-commerce-ai-tools-protocol-retailers-platforms/
1•AznHisoka•33m ago•0 comments

Key Chinese Money Laundering Network Member Charged W Laundering Drug Proceeds

https://www.justice.gov/opa/pr/key-member-chinese-money-laundering-network-charged-laundering-ten...
3•737min•37m ago•0 comments

Fifty People Control the Culture

https://www.honest-broker.com/p/fifty-people-control-the-culture
5•Khaine•38m ago•0 comments

Ask HN: Cheaper Datadog Anyone?

2•kvaranasi_•40m ago•2 comments

When XLA Isn't Enough: From Pallas to VLIW with Splash Attention on TPU

https://patricktoulme.substack.com/p/when-xla-isnt-enough-from-pallas
1•patrick_toulme•41m ago•0 comments

Show HN: Voice Composer – Browser-based pitch detection to MIDI/strudel/tidal

https://dioptre.github.io/tidal/
2•dioptre•41m ago•1 comments

America's most novel train project is too deadly

https://www.economist.com/united-states/2026/01/08/americas-most-novel-train-project-is-too-deadly
3•yakkomajuri•42m ago•0 comments

There Is No Budget for Books

https://jonpauluritis.com/articles/no-budget-for-books/
1•jppope•42m ago•0 comments

WUTA WRENs

https://en.wikipedia.org/wiki/Western_Approaches_Tactical_Unit
2•CHB0403085482•43m ago•0 comments

Situation Monitor

https://hipcityreg.github.io/situation-monitor/
1•mellosouls•48m ago•0 comments

DOJ sues California cities over natural gas bans

https://www.justice.gov/opa/pr/justice-department-sues-california-cities-over-natural-gas-bans
5•737min•49m ago•0 comments

Show HN: Ma'at – Court-defensible jury analysis platform (open source)

https://github.com/Jennaleighwilder/MA-AT
1•jennaleighwest•52m ago•0 comments

Show HN: I built Sonars in 3 weeks to see if AI coding is useful for my company

https://sonars.dev
3•JasperBekkers•54m ago•0 comments