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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/

Show HN: How many working days in 2026? And your income in pizzas

https://gettti.me/tools/working-days
1•v_b•24s ago•0 comments

Show HN: Free market intelligence tool, analyze HN, find users pain points

https://whatstechin.com/
1•losalah•1m ago•0 comments

How I Use Claude Code as a Designer at Shopify [video]

https://www.youtube.com/watch?v=aVDAhJ3PtLg
1•benr•2m ago•1 comments

Show HN: Engram – open-source persistent memory for AI agents (Bun and SQLite)

https://github.com/zanfiel/engram
1•zanfiel•3m ago•1 comments

The Complete Guide to Building Skills for Claude [pdf]

https://resources.anthropic.com/hubfs/The-Complete-Guide-to-Building-Skill-for-Claude.pdf
1•Terretta•4m ago•0 comments

Agentic coding doesn't = technical debt

https://inmydata.ai/blog/agentic-coding-discipline/
1•nfinch•5m ago•0 comments

A 10% traffic spike took down a stable system in 3 minutes and 47 seconds

https://www.orchenginex.com/publications/queue-collapse-traffic-spike
1•Mlondy•7m ago•0 comments

Show HN: This is what I Want from the Internet

https://jetzt.cx/about
1•krickelkrackel•11m ago•1 comments

Nvidia backs AI data center startup Nscale as it hits $14.6B valuation

https://www.cnbc.com/2026/03/09/nscale-ai-data-center-nvidia-raise.html
2•voxadam•13m ago•0 comments

Building a system to track market narratives and behavioral signals

1•mindquantai•13m ago•0 comments

Tiny Terminal

https://meimakes.com/tiny-terminal/
1•the-mitr•16m ago•0 comments

Production query plans without production data

https://boringsql.com/posts/portable-stats/
1•todsacerdoti•18m ago•0 comments

Russia targets Signal and WhatsApp accounts in cyber campaign

https://english.aivd.nl/latest/news/2026/03/09/russia-targets-signal-and-whatsapp-accounts-in-cyb...
1•HelloUsername•18m ago•0 comments

Mahjong Mentor

https://mj-mentor.lovable.app/
1•dpzl•20m ago•1 comments

Fear Is Destroying Your Org

https://yanivpreiss.com/2026/03/08/fear-is-destroying-your-org/
2•PretzelFisch•21m ago•0 comments

Show HN: Yawn – Yet Another Worktree Navigator (CLI, Pipes into Fzf)

https://github.com/ComeBertrand/yawn
1•ComeBertrand•23m ago•0 comments

Show HN: Unpinched – open-source PinchTab and CDP bridge detector

https://github.com/Helixar-AI/Unpinched
1•Siri_D•23m ago•0 comments

API Traffic Analyzer for Kubernetes

https://kubeshark.com/
1•l1am0•27m ago•0 comments

Hermes Agent

https://github.com/NousResearch/hermes-agent
1•tosh•27m ago•0 comments

Show HN: commitgen-cc – Generate Conventional Commit message locally with Ollama

https://github.com/Eaglemann/commitgen-cc
1•eagleman•28m ago•1 comments

Ask HN: What is your oldest living presence on the World Wide Web?

2•dhruv3006•30m ago•0 comments

The Economy of Loneliness

https://app.dateseriously.com/the-economy-of-loneliness.html
1•skanderbm•30m ago•0 comments

Show HN: Think Better – Inject Decision Frameworks into Claude and Copilot

https://github.com/HoangTheQuyen/think-better
1•hoangthequyen01•35m ago•0 comments

35 days in. 28 training cycles across 3 base models

https://forgeintelligence.substack.com/p/forge-intelligence-edition-5
1•beakmull•35m ago•0 comments

Returning to Rails in 2026

https://www.markround.com/blog/2026/03/05/returning-to-rails-in-2026/
4•todsacerdoti•35m ago•3 comments

Russian hackers breach Signal and WhatsApp accounts officials, Netherlands warns

https://www.reuters.com/world/europe/russia-backed-hackers-breach-signal-whatsapp-accounts-offici...
2•repelsteeltje•36m ago•0 comments

Gyro-Claw – Secure execution runtime for AI agents

4•gyroscape•37m ago•0 comments

Building GREMLIN's Lair

https://peebs.org/building-gremlins-lair/
2•nemesisj•37m ago•0 comments

Every language should have a UUID type

https://nafees.bearblog.dev/every-language-should-have-a-uuid-type/
2•mnafees•42m ago•0 comments

Building a Stripe dashboard with an ESP32 desktop clock and Rust

https://duggan.ie/posts/building-a-stripe-dashboard-with-an-esp32-desktop-clock-and-rust
2•duggan•43m ago•1 comments