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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/

DeepSeek MHC: Manifold-Constrained Hyper-Connections

https://twitter.com/Dorialexander/status/2006680750230249839
1•naves•1m ago•0 comments

Notes on Taiwan

https://www.thefitzwilliam.com/p/notes-on-taiwan
1•MajesticFrogBoy•4m ago•0 comments

Tech Startups Are Handing Out Free Nicotine Pouches to Boost Productivity

https://www.wsj.com/tech/tech-startups-are-handing-out-free-nicotine-pouches-to-boost-productivit...
1•gpi•10m ago•1 comments

Owning a smartphone at age 12 linked to mental and physical health risks

https://medicalxpress.com/news/2025-12-smartphone-age-linked-mental-physical.html
3•PaulHoule•10m ago•0 comments

Six Harmless Bugs Lead to Remote Code Execution

https://mehmetince.net/the-story-of-a-perfect-exploit-chain-six-bugs-that-looked-harmless-until-t...
1•ozirus•11m ago•0 comments

Oxidation and Radiation – the Rise of uv in 2025

https://zahlman.github.io/posts/2025/12/31/oxidation/
4•zahlman•14m ago•0 comments

My personal data collection practice evolved over the years

https://www.artfish.ai/p/2025-data-collection-wrapped
1•yenniejun111•15m ago•0 comments

PlayStation 5 ROM Keys Leaked

https://www.psdevwiki.com/ps5/Keys
1•tragiclos•15m ago•0 comments

Starlink satellites being lowered from 550 km to 480 km

https://twitter.com/michaelnicollsx/status/2006790372681220530
1•wmf•15m ago•0 comments

Eric Fromm and New Year's Irresolutions

https://achad4.substack.com/p/eric-fromm-and-new-years-irresolutions
1•achad45•15m ago•0 comments

A Man Who Was Supposed to Kill Martin Luther King Jr

https://slate.com/news-and-politics/2025/12/martin-luther-king-mlk-fbi-files-murder-assassination...
1•rmason•17m ago•0 comments

Show HN: Topological Obstruction Proof for P vs. NP (Derived in Solitary)

https://www.academia.edu/145628758/P_NP_Spectral_Geometric_Proof_via_Homological_Obstructions_in_...
1•MohskiBroskiAI•18m ago•1 comments

Introduction – Create Your Own Programming Language with Rust

https://createlang.rs
2•birdculture•18m ago•0 comments

A new type of compass [video]

https://www.youtube.com/watch?v=eiDhbZ8-BZI
1•xomiachuna•21m ago•1 comments

A love song for Linux gamers with old GPUs

https://timur.hu/blog/2025/love-song-for-linux-gamers-with-old-gpus-eoy2025
1•epakai•22m ago•0 comments

Show HN: Speak Your Find – Voice-first intent matching with Gemini and pgvector

https://speakyourfind.com/
1•sameg14•22m ago•0 comments

Updated for 2026: Forward Deployed Engineer Rule Book

https://www.amazon.com/dp/B0FXSZW5HB
2•STEM-AI-FDE•25m ago•0 comments

Show HN: Securing a no-traffic VPS by watching SSH and HTTP logs

1•muthuishere•25m ago•0 comments

Better ELF symbol lookup via DT_GNU_HASH

https://flapenguin.me/elf-dt-gnu-hash
1•dboon•25m ago•0 comments

Namecheap takes down domain hosting video archives of Israeli war crimes

https://neosmart.net/blog/namecheap-com-revokes-domain-hosting-video-archives-of-israeli-war-crimes/
6•ComputerGuru•27m ago•1 comments

Change is the root of all (evil) bugs

https://fhur.me/posts/2026/change-is-the-root-of-all-evil-bugs
1•fernandohur•35m ago•0 comments

Show HN: Wreckruiter – Check a recruiter before you respond

https://www.wreckruiter.com
2•ohMoshko•36m ago•1 comments

Prompting People

https://kuber.studio/blog/Reflections/Prompting-People
1•kuberwastaken•40m ago•0 comments

Truthsorting

https://dailybaffle.com/truthsorting
4•triword•40m ago•3 comments

Writing an eigenvalue solver in Rust for WebAssembly

https://abstractnonsense.xyz/blog/2025-12-31-eigenvalue-solver-in-rust-for-webassembly/
1•subset•42m ago•0 comments

Arpanet standardized TCP/IP on this day in 1983

https://www.tomshardware.com/networking/arpanet-standardized-tcp-ip-on-this-day-in-1983-43-year-o...
12•barishnamazov•43m ago•0 comments

I automatically generated minutes for five years of IETF meetings

https://educatedguesswork.org/posts/ietf-minutes/
2•ekr____•44m ago•0 comments

'Technology we saved and tech we lost in 2025'

https://thenewstack.io/technology-we-saved-and-tech-we-lost-in-2025/
2•MilnerRoute•46m ago•0 comments

Show HN: An SVG Inspection Tool

https://www.svg.studio/
3•gatkinso•49m ago•0 comments

A guide to local AI coding compiled from community experiences

https://github.com/murataslan1/local-ai-coding-guide
1•murataslan•49m ago•1 comments