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Bloom's two sigma problem (2020)

https://nintil.com/bloom-sigma
8•Tomte•6mo ago

Comments

trane_project•6mo 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/

Former Mozaic Payments CEO arrested, charged with fraud

https://www.reuters.com/legal/government/tech-startup-ceo-defrauded-private-equity-firm-out-20-mi...
1•ilamont•26s ago•0 comments

Show HN: Peaktech PSU Control from Emacs

https://github.com/bwachter/peaktech-psu
1•finaard•2m ago•0 comments

BJH OS – Free Open Source Browser OS for Windows, Mac, Linux, Android, iPhone

https://bjhos.unaux.com
1•Haris18•3m ago•0 comments

Fix for Slow Open and Save Dialog on macOS

https://rknight.me/blog/fix-for-slow-open-and-save-dialog-macos/
1•rknightuk•4m ago•0 comments

Steam Workshop Downloader – Fast and Free Tool

https://steamworkshopdownloader.net
2•quchao•8m ago•2 comments

Show HN: A really really simple text-based budget app

https://github.com/alexandreprl/budget-as-a-text
1•Eagle64•9m ago•0 comments

OpenAI, Anthropic, and Block donate agent tools to new 'Agentic AI Foundation'

https://techoreon.com/openai-anthropic-block-agentic-ai-foundation-linux/
1•GeorgeWoff25•13m ago•0 comments

Common Lisp, ASDF, and Quicklisp: packaging explained

https://cdegroot.com/programming/commonlisp/2025/11/26/cl-ql-asdf.html
2•todsacerdoti•13m ago•0 comments

Show HN: Voice and Messaging Agents Using the WhatsApp Calling API

https://www.livetok.ai
1•gustavogb•13m ago•0 comments

Scientists Thought Parkinson's Was in Our Genes. It Might Be in the Water

https://www.wired.com/story/scientists-thought-parkinsons-was-in-our-genes-it-might-be-in-the-water/
2•quapster•17m ago•1 comments

Nissan and Wayve Sign Agreements to Deliver Next-Generation Driver Assistance

https://wayve.ai/press/nissan-wayve-sign-definitive-agreements/
1•anonymooooos•18m ago•0 comments

U.S. plans to ask visitors to disclose 5 years of social media history

https://www.washingtonpost.com/immigration/2025/12/10/esta-social-media-united-states/
3•cm2187•21m ago•0 comments

Health premiums rose nearly 3x rate of worker earnings over the past 25 years

https://theconversation.com/health-insurance-premiums-rose-nearly-3x-the-rate-of-worker-earnings-...
1•pseudolus•24m ago•0 comments

Show HN: Vibecc – Write code in natural language and compile to a C binary

https://github.com/Jacques2Marais/vibecc
1•Jacques2Marais•25m ago•0 comments

"I Wasted 8 Years in Crypto": A Builder's Exit Note Goes Viral Across Asia

https://beincrypto.com/i-wasted-8-years-in-crypto/
1•decimalenough•26m ago•0 comments

E-petition debate relating to digital ID – Monday 8 December 2025

https://news.ycombinator.com/
1•hhdave•28m ago•1 comments

Recent Travel News

https://wowfare.com/en-us/blog/pegasus-airlines-launches-direct-istanbul-bilbao-flights/
1•belatwing•28m ago•0 comments

NPM.watch: Track NPM Downloads, Package Safety and Live Stats

https://www.npm.watch
2•Next-Icons•29m ago•1 comments

Show HN: Deploy Kubernetes apps with RunOS, free to use

https://runos.com/blog/runos-open-to-everyone.html
1•didierbreedt•31m ago•0 comments

OVH Public Cloud Database Outage "resolved"

https://public-cloud.status-ovhcloud.com/incidents/4gd0bgz7zm2j
1•voodooEntity•31m ago•1 comments

Nanoparticles that enhance mRNA delivery could reduce vaccine dosage and costs

https://phys.org/news/2025-11-nanoparticles-mrna-delivery-vaccine-dosage.html
1•PaulHoule•32m ago•0 comments

Letting Nvidia sell H200s to China is closing the door after horse has bolted

https://www.theregister.com/2025/12/09/nvidia_h200s_china_ai/
1•pseudolus•32m ago•0 comments

I built an AI that reads your Git history and writes status reports

1•slmslm•33m ago•1 comments

AI will make formal verification go mainstream

https://martin.kleppmann.com/2025/12/08/ai-formal-verification.html
3•mau•39m ago•0 comments

Webb identifies earliest supernova to date, shows host galaxy

https://esawebb.org/news/weic2523/
1•doener•40m ago•0 comments

Local news organizations discover the value of their own archives

https://www.niemanlab.org/2025/12/local-news-organizations-discover-the-value-of-their-own-archives/
2•giuliomagnifico•42m ago•1 comments

Show HN: Sift – Turning chore into a hyper-personalized, immersive journey

https://sift-11a.pages.dev/
1•paperplaneflyr•42m ago•0 comments

Human art in a post-AI world should be strange

https://www.owlposting.com/p/art-in-a-post-ai-world-should-be
2•sebg•43m ago•0 comments

Next Generation Agentic Proxy for AI Agents and MCP Servers

https://github.com/agentgateway/agentgateway
1•mooreds•43m ago•0 comments

Paramount Pictures X Account Hacked to Read 'Proud Arm of the Fascist Regime'

https://variety.com/2025/film/news/paramount-x-account-hacked-proud-arm-of-the-fascist-regime-123...
3•robtherobber•44m ago•1 comments