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Bloom's two sigma problem (2020)

https://nintil.com/bloom-sigma
8•Tomte•9mo ago

Comments

trane_project•9mo 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/

Phishing Email

1•nicp•1m ago•0 comments

Productivity Is the New Data Breach

https://www.youtube.com/watch?v=e1ZM3dSfB70
1•frag•4m ago•0 comments

RalphMAD – Autonomous SDLC Workflows for Claude Code (BMAD and Ralph Loop)

1•hieutrtr•4m ago•0 comments

LibreOffice Online dragged out of the attic

https://www.theregister.com/2026/03/02/libreoffice_online_deatticized/
1•rbanffy•5m ago•0 comments

Lollygagging

https://www.merriam-webster.com/dictionary/lollygag
1•bramjoosten•7m ago•0 comments

Show HN: I Built a TypeScript ORM for DynamoDB

https://www.zeroinbox.ai/dynamodb
1•shayan-arman•7m ago•0 comments

Zed Overhauled Their ToS and Privacy Policy

https://zed.dev/blog/terms-update
1•thomascountz•8m ago•0 comments

Show HN: Spec-shaker – "Chaos engineering" for tests via semantic mutation

https://github.com/lydiazbaziny/spec-shaker
1•lydiazbaziny•10m ago•0 comments

AWS outage due to drone attacks in UAE

https://www.bbc.com/news/articles/cgk28nj0lrjo
1•stellastah•10m ago•0 comments

Greeks (Finance)

https://en.wikipedia.org/wiki/Greeks_(finance)
1•tosh•11m ago•0 comments

Show HN: Cmdop – Check your terminal from your phone, through NAT, free forever

https://github.com/commandoperator/cmdop-sdk
1•markolofsen•12m ago•0 comments

Show HN: TrueMatch – AI agents match you on observed behavior, not profiles

https://github.com/goeldivyam/truematch
2•godivyam•13m ago•0 comments

Living Human Brain Cells Play Doom on a Cortical Labs CL1 [video]

https://www.youtube.com/watch?v=yRV8fSw6HaE
1•OccamsMirror•18m ago•0 comments

Show HN: Shipcheck – Pre-launch audit tool for SaaS founders

https://www.shipcheck.pro/
1•fiynraj•19m ago•2 comments

Deterministic and AI-agent broker import to prevent portfolio data corruption

https://www.portfolio-terminal.com/demo
1•julien_devv•20m ago•2 comments

The Future Is AC/DC: The Agent Centric Development Cycle

https://www.sonarsource.com/blog/the-future-is-ac-dc-the-agent-centric-development-cycle/
1•MoustaphaSaad•22m ago•1 comments

MyFitnessPal has acquired Cal AI, the viral calorie app built by teens

https://techcrunch.com/2026/03/02/myfitnesspal-has-acquired-cal-ai-the-viral-calorie-app-built-by...
1•svenfaw•25m ago•0 comments

Show HN: Rriftt_ai.h – A bare-metal, dependency-free C23 tensor engine

https://github.com/Rriftt/rriftt_ai.h
3•Rriftt•27m ago•0 comments

Iran war heralds era of AI-powered bombing quicker than 'speed of thought'

https://www.theguardian.com/technology/2026/mar/03/iran-war-heralds-era-of-ai-powered-bombing-qui...
2•saeedesmaili•27m ago•4 comments

Iranian cryptoasset outflows surge 700% following airstrikes

https://www.elliptic.co/blog/iranian-cryptoasset-outflows-surge-700-percent-following-attacks
1•giuliomagnifico•29m ago•0 comments

Attempting to detect smart glasses nearby and warn you

https://blog.adafruit.com/2026/03/02/attempting-to-detect-smart-glasses-nearby-and-warn-you/
1•EvgeniyZh•37m ago•0 comments

Show HN: Instbyte – Self-hosted LAN sharing tool, run with npx, no cloud

https://github.com/mohitgauniyal/instbyte
2•mohitgauniyal•37m ago•1 comments

Feynman's War: Modelling Weapons, Modelling Nature (1986) [pdf]

https://gwern.net/doc/science/physics/1998-galison.pdf
1•nill0•40m ago•0 comments

The Download: protesting AI, and what's floating in space

https://www.technologyreview.com/2026/03/02/1133811/the-download-protesting-ai-and-whats-floating...
1•joozio•42m ago•0 comments

LeRobot: An Open-Source Library for End-to-End Robot Learning

https://arxiv.org/abs/2602.22818
2•nill0•43m ago•0 comments

PDF Tools

https://www.pdffixnow.com
1•instahotstar•48m ago•0 comments

Comfy.org

https://blog.comfy.org/
1•VanessaMGSA•48m ago•0 comments

Show HN: My OpenClaw knows EXACTLY what it did a week ago. Thanks to "hmem"-MCP

1•Bumblebiber•51m ago•0 comments

Africa Imported Europe's Worst Idea

https://magatte.substack.com/p/how-africa-imported-europes-worst
3•EvgeniyZh•52m ago•0 comments

Anthropic's Feud with Pentagon Earns It Fans Amid the Blowback

https://www.wsj.com/tech/ai/anthropics-feud-with-pentagon-earns-it-fans-amid-the-blowback-f7e2bb83
2•JumpCrisscross•54m ago•0 comments