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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/

I was an Amazon L7, I led global AI enablement, I was laid off

https://twitter.com/PlumbNick/status/2016500347053773198
1•MrBuddyCasino•26s ago•0 comments

Huawei and Qualcomm tussle for 5G patents lead as 6G draws closer

https://www.lightreading.com/5g/huawei-and-qualcomm-tussle-for-5g-patents-lead-as-6g-draws-closer
1•JeanKage•1m ago•0 comments

AI on Australian travel company website sent tourists to nonexistent hot springs

https://www.cnn.com/2026/01/28/travel/ai-tourism-nonexistent-hotsprings-intl-scli
1•breve•3m ago•0 comments

Porkchop: A Tamagotchi‑Style WiFi Pig That Levels Up While You Hack

https://github.com/0ct0sec/M5PORKCHOP
1•Lwrless•6m ago•0 comments

Systemic Failures Led to Midair Collision over Potomac River in Washington

https://www.ntsb.gov:443/news/press-releases/Pages/NR20260127.aspx
1•1659447091•7m ago•0 comments

Mozilla Slopaganda

https://dbushell.com/2026/01/28/mozilla-slopaganda/
1•Semaphor•10m ago•0 comments

Disrupting the Largest Residential Proxy Network

https://cloud.google.com/blog/topics/threat-intelligence/disrupting-largest-residential-proxy-net...
2•avastel•15m ago•0 comments

I spent a few months investigating peptides and injecting bootleg Chinese GLP1s

https://nymag.com/intelligencer/article/peptides-from-instagram-china-wellness-cure.html
1•ovi256•15m ago•0 comments

Show HN: What if personal AI served society? A demo to counter polarization

1•danv_vdx•17m ago•1 comments

The Netherlands rethinks its US tech addiction

https://www.politico.eu/article/netherlands-eu-us-tech-digid-donald-trump-policy/
4•Vinnl•18m ago•2 comments

Sam Altman's AI Combinator and AI Paul Graham

https://www.latent.space/p/ainews-sam-altmans-ai-combinator
1•dhfbshfbu4u3•18m ago•0 comments

Game over? Video gamers take fight to Brussels over developers cutting supports

https://www.irishtimes.com/world/europe/2026/01/29/game-over-video-gamers-take-fight-to-brussels-...
1•alamsterdam•21m ago•1 comments

Show HN: ButterflAI – turn 1 product photo into optimized ecommerce listing

https://butterflai.pro/en
1•enric1296•24m ago•0 comments

Claude Code's Hidden Multi-Agent System

https://paddo.dev/blog/claude-code-hidden-swarm/
2•tacone•29m ago•0 comments

News publishers limit Internet Archive access due to AI scraping concerns

https://www.niemanlab.org/2026/01/news-publishers-limit-internet-archive-access-due-to-ai-scrapin...
3•giuliomagnifico•29m ago•0 comments

Google Ads Reporting with SQLite and Metabase [Guide]

https://nerovanbiervliet.be/guides/#google-ads
1•NeroVanbierv•30m ago•0 comments

Show HN: Post Tomato – simple social media publishing with AI

https://posttomato.com
1•blindnomore•30m ago•0 comments

Tell HN: "Write less code" now means two different things

1•mikaelaast•37m ago•0 comments

Mac keyboard layout configuration with hidutil

https://amitp.blogspot.com/2023/04/mac-keyboard-with-hidutil.html
1•fanf2•37m ago•0 comments

Lessons from shutting down an AI Fashion Stylist app used by millions

https://prtkagwl.substack.com/p/learnings-from-consumer-ai-fashion
1•btwnplaces•38m ago•0 comments

Google's Technical Writing Courses

https://developers.google.com/tech-writing
2•dvrp•40m ago•0 comments

Why do I need an app for every single thing

https://www.youtube.com/watch?v=1VVwXJ5MVIo
1•gum_wobble•41m ago•0 comments

Software Survival 3.0

https://steve-yegge.medium.com/software-survival-3-0-97a2a6255f7b
2•jaybrueder•46m ago•0 comments

Tell HN: As AI gets better, are scripting languages losing their appeal?

1•delduca•49m ago•1 comments

Better Internet Dashboard UK: visualise the current fibre situation in your area

https://bidb.uk/
1•tomaytotomato•50m ago•0 comments

Google to foist Gemini pane on Chrome users in automated browsing push

https://www.theregister.com/2026/01/29/chrome_gemini_pane/
3•beardyw•50m ago•0 comments

mmdr: 500-1000x faster Mermaid rendering, zero browser dependencies

https://github.com/1jehuang/mermaid-rs-renderer
2•dochtman•52m ago•0 comments

Show HN: An AI chat app with no usage limits and 200+ models

https://tryscout.dev
1•mjupp1•52m ago•0 comments

Show HN: Moltbot state observability and persistance daemon

https://github.com/NmadeleiDev/moltbot_config_watcher
1•Gregoryy•53m ago•0 comments

Show HN: I built an AI Agent that turns prompts into a SaaS explainer videos

https://motionbase.design
1•mpoweredo•53m ago•0 comments