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Bloom's two sigma problem (2020)

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

Comments

trane_project•8mo 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/

OpenVizUI is a modern desktop application

https://www.openvizui.com
1•opcnlin•38s ago•0 comments

Avanci Video Signs First Licensee and Publishes Rates

https://www.streamingmedia.com/Articles/ReadArticle.aspx?ArticleID=173422
1•breve•58s ago•0 comments

The Power of Ten/NASA/JPL's Rules for Developing Safety Critical Code [pdf]

https://spinroot.com/gerard/pdf/P10.pdf
1•keepamovin•2m ago•0 comments

Show HN: Orangensaft – A mini Python-like language with LLM eval in lang runtime

https://github.com/jargnar/orangensaft
1•jargnar•3m ago•0 comments

Spegel vs. Harbor: Which Pull-Through Cache Should You Choose?

https://georg-schwarz.com/blog/spegel-vs-harbor-which-pull-through-cache-should-you-choose/
1•rhazn•4m ago•0 comments

Post-Quantum OpenSSH

https://www.openssh.org/pq.html
1•jakesocks•6m ago•0 comments

Free Tool to See Your Voice Range in the Browser in Real Time

https://pitchhighway.com/voice-range
1•gabrielpolyy•7m ago•0 comments

The Most Unsettling Album on the Internet

https://vapor95.com/blogs/darknet/the-most-unsettling-album-on-the-internet-towers
1•kekqqq•9m ago•0 comments

Show HN: Retrospec: reverse-engineer a spec prompt for an AI agent from a commit

https://github.com/igolaizola/retrospec
1•igolaizola•9m ago•0 comments

My Struggle with Writing on the Internet

https://www.surajc.com/blog/on-writing-on-the-internet
1•surajcdry•10m ago•0 comments

Show HN: DID reputation management on coinpay's site for agents and humans alike

https://coinpayportal.com/
1•cranberryturkey•12m ago•0 comments

Rex 84

https://en.wikipedia.org/wiki/Rex_84
1•ndsipa_pomu•13m ago•0 comments

College: Things I wish I knew on the first day

https://notes.kocielnik.pl/5-things-to-know-before-starting-college/
1•kocielnik•13m ago•0 comments

Show HN: Sqlmodel.org – open-source Browser Data Modelling

https://github.com/sqlmodel/sqlmodel
1•Sean766•13m ago•0 comments

Coyote interceptor downs drone swarms with electromagnetic weapon

https://newatlas.com/military/coyote-interceptor-test-takes-out-drone-swarms/
1•breve•16m ago•0 comments

Show HN: Ziran, security testing for AI agents

https://github.com/taoq-ai/ziran
1•leoneperdigao•16m ago•0 comments

Monosketch

https://monosketch.io/
1•penguin_booze•16m ago•0 comments

US repeals EPA endangerment finding for greenhouse gases

https://www.cnn.com/2026/02/12/climate/trump-repeals-epa-endangerment-finding
25•heresie-dabord•18m ago•7 comments

The AI Dark Forest

https://maggieappleton.com/ai-dark-forest
1•jacquesm•18m ago•0 comments

Install PowerShell on Windows, Linux, and macOS

https://learn.microsoft.com/en-us/powershell/scripting/install/install-powershell?view=powershell...
1•gjvc•20m ago•0 comments

Protecting Children without the privacy nightmare of Digital IDs [pdf]

https://democrats.eu/wp-content/uploads/2025/12/Protecting-Children-without-the-privacy-nightmare...
1•uyzstvqs•20m ago•0 comments

Ask HN: AI Depression

6•pavello•22m ago•1 comments

Even the Hospitals Aren't Safe in Iran

https://www.newyorker.com/news/the-lede/cora-engelbrecht-lede-iran-waits-for-war
1•breppp•24m ago•0 comments

Conductor Update: Introducing Automated Reviews

https://developers.googleblog.com/conductor-update-introducing-automated-reviews/
1•xnx•26m ago•0 comments

Show HN: Paper Banana – AI academic illustration generator

https://paperbanana.me
1•GuiShou•27m ago•0 comments

Show HN: A lightweight, ad-free medal tracker for Milano Cortina 2026

https://www.milano2026.live/
2•xjefflee•27m ago•0 comments

The 'astounding' rise of semaglutide – and what's next for weight-loss drugs

https://www.nature.com/articles/d41586-026-00228-1
2•sohkamyung•27m ago•0 comments

Show HN: Deploy Clawbot Instance in Seconds

https://deployclaw.lovable.app/
1•Creator-io•29m ago•0 comments

OpenAI accuses DeepSeek of malpractice ahead of AI launch

https://restofworld.org/2026/openai-deepseek-distillation-dispute-us-china/
1•donohoe•29m ago•0 comments

Meta Plans to Add Facial Recognition Technology to Its Smart Glasses

https://www.nytimes.com/2026/02/13/technology/meta-facial-recognition-smart-glasses.html
2•donohoe•30m ago•3 comments