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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/

Why do office chairs have 5 legs?

https://www.youtube.com/watch?v=kKt46Lch2bo
1•cyr0dj0hn•2m ago•0 comments

Built and shipped an iOS app from my phone while traveling Japan

1•lordokami•11m ago•1 comments

AgentRE-Bench: Can LLM Agents Reverse Engineer Malware?

https://www.agentre-bench.ai/
2•N3Xxus_6•18m ago•0 comments

Medicaid Open Data Viewer

https://www.medicaidopendata.org/
1•charlesxjyang•18m ago•0 comments

CLI tool for live communication between agents in different TUIs and subagents

https://github.com/aannoo/hcom
2•CjHuber•20m ago•0 comments

The Problem with Stainless Steel [video]

https://www.youtube.com/watch?v=KHJmQdvnfPE
1•dataflow•21m ago•0 comments

Show HN: Automate Mac with Codex: macOS Control MCP Demo

https://github.com/PeterHdd/macos-control-mcp
1•peterhddcode•25m ago•0 comments

The lifelong exercise that keeps Japan moving (2020)

https://www.bbc.com/worklife/article/20200609-the-life-long-exercise-that-keeps-japan-moving
2•surprisetalk•26m ago•0 comments

Australians diagnosed with rare tattoo-related vision loss

https://www.abc.net.au/news/health/2026-02-14/tattoo-eye-inflammation/106315444
2•stubish•29m ago•0 comments

Stanford Review: Is YC for Cowards?

https://stanfordreview.org/is-yc-for-cowards/
2•hedgehog0•32m ago•0 comments

Show HN: A Steve Jobs in Your Pocket AI Skill

https://openclaw.rocks/blog/ai-skills-are-the-new-apps
1•stubbi•33m ago•0 comments

Show HN: GuardLLM, hardened tool calls for LLM apps

https://github.com/mhcoen/guardllm
1•mhcoen•35m ago•0 comments

Day vs. 10 Years doing Van Life [video]

https://www.youtube.com/shorts/9j-tzn89teY
1•keepamovin•35m ago•0 comments

Elon Musk's xAI faces lawsuit threat over Mississippi data center air pollution

https://www.cnbc.com/2026/02/13/musks-xai-faces-threat-of-naacp-lawsuit-over-pollution-in-mississ...
5•MilnerRoute•35m ago•0 comments

ICE Agents Menaced Minnesota Protesters at Their Homes, Filings Say

https://www.nytimes.com/2026/02/13/us/minneapolis-ice-agents-protester-home-visits.html
10•xrd•42m ago•0 comments

Viral AI Video of Brad Pitt Fighting Tom Cruise Shakes Hollywood

https://www.latimes.com/entertainment-arts/business/story/2026-02-13/brad-pitt-fighting-tom-cruis...
3•koolba•44m ago•1 comments

I let AI fix my printer and it bricked my Wi-Fi three times

https://onlydole.substack.com/p/i-let-ai-fix-my-printer
3•onlydole•45m ago•1 comments

Show HN: Ergo – Minimal, fast, persistent task backlog in your repo

https://github.com/sandover/ergo
1•sandover•45m ago•0 comments

A new way to make steel could reduce America's reliance on imports

https://news.mit.edu/2026/new-way-make-steel-could-reduce-americas-reliance-imports-0213
3•teleforce•47m ago•0 comments

Maximising time in the sun: how to maintain solar panels to make them last

https://www.theguardian.com/australia-news/2026/feb/13/maximising-time-in-the-sun-how-to-maintain...
2•teleforce•49m ago•0 comments

Show HN: Hivemind – Metaskill for skill/experience sharing between agents

https://www.flowercomputer.com/hivemind/
1•edouerd•50m ago•0 comments

AI Is (Finally) Bursting [video]

https://www.youtube.com/watch?v=yYe9YrdyJNQ
1•mgh2•55m ago•0 comments

NPMX – a fast, modern browser for the NPM registry

https://npmx.dev
7•slymax•57m ago•1 comments

The (Tech) Abundance Paradox

https://2ndorder.beehiiv.com/p/the-tech-abundance-paradox
1•Gooblebrai•59m ago•0 comments

AI-Powered Knowledge Graphs for Cyber Threat Analysis

https://isc.sans.edu/diary/32712
2•mcdermott•1h ago•0 comments

Dario Amodei – "We are near the end of the exponential" [video]

https://www.youtube.com/watch?v=n1E9IZfvGMA
1•mattlangston•1h ago•1 comments

I Filmed the Hood Like an Episode of the Office [video]

https://www.youtube.com/watch?v=pVNOiykAmMg
1•keepamovin•1h ago•0 comments

How Gotye Wrote Somebody That I Used to Know [video]

https://www.youtube.com/watch?v=Tg63Xc39uaQ
1•fortran77•1h ago•0 comments

Giving OpenClaw agent a controlled way to pay

https://theycanpay.com/
1•ram-baktha•1h ago•1 comments

What should we do with CLs generated by AI?

https://groups.google.com/g/golang-dev/c/4Li4Ovd_ehE/
3•ValentineC•1h ago•0 comments