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Rebuild it from the picture Dynamic Programming

https://nokku.payanai.com/interview-prep/dsa/dynamic-programming
1•payanai•2m ago•0 comments

A step toward defining the Standard Model on a lattice

https://openai.com/index/step-toward-defining-the-standard-model
1•acossta•5m ago•0 comments

GLM Models Cut AI Coding Costs 90% for 2k Engineers

https://finance.biggo.com/news/71888475bad974d6
3•iwayato•6m ago•0 comments

Jensen Huang might return to Nvidia as CEO

https://www.reuters.com/world/china/jensen-huang-discusses-comeback-nvidia-ceo-with-allies-ft-rep...
6•YakubYilmaz•9m ago•0 comments

When Failure Becomes Expensive: How Systems Reorder What Is Worth Protecting

https://notesonordering.substack.com/
1•CornorReed•10m ago•0 comments

Extinct 'vampire camel' once stalked North American plains – Science – AAAS

https://www.science.org/content/article/extinct-vampire-camel-once-stalked-north-american-plains?...
4•rbanffy•11m ago•0 comments

Building a Company Without Losing Your Marriage

https://founderreports.com/interview/what-a-startup-does-to-a-founders-marriage/
3•peterchane•15m ago•0 comments

The Joy of Fuck-You Money (2018)

https://thedeepdish.org/fuck-you-money/
2•downbad_•15m ago•1 comments

'We Have to Take Over': Far-Right Extremists Want to Seize Control of the GOP

https://www.wired.com/story/we-have-to-take-over-far-right-extremists-want-to-seize-control-of-th...
8•rbanffy•18m ago•3 comments

The Lyttle Lytton Contest 2026 winners

https://adamcadre.ac/lyttle/2026.html
2•agluszak•20m ago•0 comments

Chemical spills into drainage ditch at SpaceXAI in Southaven

https://wreg.com/news/chemical-spills-into-drainage-ditch-at-spacexai-in-southaven/
7•mikhael•21m ago•1 comments

Shen-rust, A port of the Shen programming language to Rust

https://github.com/pyrex41/shen-rust
2•eggy•24m ago•1 comments

VisualBasic.World: A gallery of Planet Source Code programs from 1997 to 2012

https://visualbasic.world/
2•broast•25m ago•1 comments

How I Remember the Byrds

https://auxiliarymemory.com/2026/11/15/how-i-remember-the-byrds/
2•wmchen•25m ago•0 comments

The Humans Are Coming for A.I.'S Jobs in "We Were Here"

https://www.youtube.com/watch?v=EMSQtqUIlXY
2•CharlesW•26m ago•0 comments

Preserving 30 Years of Salon Journalism

https://blog.archive.org/2026/11/12/preserving-30-years-of-salon-journalism/
15•CharlesW•33m ago•3 comments

Congress wants to tighten export rules on AI chips after Nvidia spy scandal

https://www.theverge.com/ai-artificial-intelligence/1033984/congress-export-rules-ai-chips-china
3•waximabbax•35m ago•0 comments

Huang Discusses Comeback as Nvidia Chief with Allies, FT Says

https://www.bloomberg.com/news/articles/2026-11-15/huang-discusses-comeback-as-nvidia-chief-with-...
4•nstj•40m ago•0 comments

Show HN: Skillset: Easily curate and install agent skills collection

https://github.com/itsmeyaw/skillset
2•itsmeyaw•40m ago•0 comments

RouterOS – Wayback Machine

https://web.archive.org/web/20240913021822/http://192.168.1.1/
4•ronsor•43m ago•0 comments

Samsung, SK Hynix, and Micron Fail to Get DRAM Antitrust Suit Dismissed

https://www.techpowerup.com/354863/samsung-sk-hynix-and-micron-fail-to-get-dram-antitrust-suit-di...
3•Axodouble•44m ago•0 comments

Show HN: The Last Complication, a Zachtronics-style watchmaking puzzle game

https://lastcomplication.com/
4•tdeangelis•45m ago•1 comments

I built an open-source multi-agent DAG orchestrator and AST RAG engine on Termux

https://github.com/KrypticKode007/Golden-Agent
2•KrypticKode007•45m ago•0 comments

Please Implement a Quorum Database

https://transactional.blog/talk/please-implement-a-quorum-database
2•eatonphil•49m ago•0 comments

'Stand with Jensen' Movement Grows

https://gizmodo.com/theres-a-burgeoning-stand-with-jensen-movement-2000840178
9•Gaishan•50m ago•1 comments

One router overload brought US air travel to a standstill

https://www.ft.com/content/9df17e1c-c77a-4f67-b5b4-1adb64bcd063
3•uxhacker•50m ago•0 comments

Zoltraak and the Dynamics of Military Innovation

https://jgeekstudies.org/2026/11/15/zoltraak-military-innovation-in-frieren/
2•zdw•51m ago•0 comments

The Cell as a Black Box – Part 6: Building a Virtual Cell, One Molecule at Time

https://cellhacker.substack.com/p/the-cell-as-a-black-box-part-6-building
2•efim_bushmanov•51m ago•0 comments

Magic: The Gathering is getting a Netflix series

https://www.theverge.com/entertainment/1033909/magic-the-gathering-netflix-series
6•Gaishan•51m ago•0 comments

Show HN: Anarchy Chess

https://dawnofthe.dad/anarchy-chess
2•userundefined•54m ago•0 comments
Open in hackernews

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/