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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/

Technocapital (2025)

https://grantslatton.com/technocapital
1•alcazar•1m ago•0 comments

Personal Computer by Perplexity

https://www.perplexity.ai/personal-computer-waitlist
1•josephwegner•1m ago•0 comments

Baochip-1x: What It Is, Why I'm Doing It Now and How It Came About

https://www.crowdsupply.com/baochip/dabao/updates/what-it-is-why-im-doing-it-now-and-how-it-came-...
1•timhh•1m ago•0 comments

Grok OSS JPEG 2000 Codec Beats Leading Commercial Codec

https://github.com/GrokImageCompression/grok
1•grokcodec•2m ago•0 comments

Chicago charges Medicaid 8x the national median for an ambulance ride

https://www.dolthub.com/blog/2026-03-11-chicago-amblance/
1•zachmu•2m ago•0 comments

I stopped using NixOS and went back to Arch Linux

https://developic.dpdns.org/blog/why-i-switched-back-to-arch-linux
1•birdculture•2m ago•0 comments

Forty-five years later, still paying for convenience

https://cuencahighlife.com/forty-five-years-later-still-paying-for-convenience/
1•dxs•3m ago•0 comments

Show HN: My 9-year, 4,500-song manual music archive (2017–2026)

https://michaelperry.org/music/archive.html
1•ffsoftboiled•4m ago•0 comments

I Was Interviewed by an AI Bot for a Job

https://schwarztech.net/snippets/i-was-interviewed-by-an-ai-bot-for-a-job
1•speckx•6m ago•0 comments

Reka Edge – 7B fast, efficient VLM (open-weights)

https://huggingface.co/RekaAI/reka-edge-2603
2•kwajiehao•6m ago•1 comments

Start at the Bottom of the Funnel

https://writealfa.com/blog/saas-content-marketing-strategy
2•fazkan•6m ago•0 comments

Using Unicode Half-Stars Symbols in Ratings

https://hyperborea.org/tech-tips/half-stars/
3•todsacerdoti•7m ago•0 comments

What Agentic Commerce Will Look Like

https://connordempsey.substack.com/p/what-agentic-commerce-will-actually
1•cdempsey44•7m ago•0 comments

Show HN: AgentOS- a memory system for AI agents that learns what it doesn't know

1•ajstars•7m ago•1 comments

Messenger RNA delivery to islet β cells using conjugated lipid nanoparticles

https://www.sciencedirect.com/science/article/pii/S2666379126000510
1•PaulHoule•8m ago•0 comments

Valve facing UK lawsuit over music rights in games Valve doesn't make or own

https://www.ign.com/articles/valve-facing-uk-lawsuit-over-music-rights-in-games-valve-doesnt-make...
4•anonymousab•8m ago•0 comments

LLM identifies it is being manipulated, predicts failure, then complies anyway

https://github.com/skavanagh/lebron-james-is-president
2•spkavanagh6•9m ago•1 comments

Protesters arrested under new Queensland hate speech laws

https://www.abc.net.au/news/2026-03-11/qld-protesters-arrested-hate-speech-laws/106443370
2•pseudalopex•10m ago•0 comments

About the New York Attorney General Lawsuit Against Valve

https://help.steampowered.com/en/faqs/view/6300-A6C4-519D-A3F5
3•haunter•11m ago•0 comments

Show HN: AgentClick – Human-in-the-loop review UI for AI coding agents

https://github.com/agentlayer-io/AgentClick
1•harvenstar•12m ago•1 comments

The Wiring Is More Dangerous Than the Weights

https://openguard.sh/blog/wiring-is-more-dangerous-than-the-weights/
2•jitera•13m ago•0 comments

Show HN: Prompt Engineering GUI – Become an Expert Fast

https://claude.ai/public/artifacts/159692b0-cf07-4acb-9c54-a8f478b914d2
1•logicallee•15m ago•0 comments

My PostgreSQL database got nuked lol

https://akselmo.dev/posts/they-broke-my-server/
1•todsacerdoti•15m ago•0 comments

Cost per outcome: measuring the real economics of AI workflows

1•deborahjacob•15m ago•1 comments

Nemotron 3 Super: An Open Hybrid Mamba-Transformer Moe for Agentic Reasoning

https://developer.nvidia.com/blog/introducing-nemotron-3-super-an-open-hybrid-mamba-transformer-m...
1•pr337h4m•15m ago•0 comments

The Debt Beneath the Dream

https://om.co/2026/03/09/the-debt-beneath-the-dream/
2•oumua_don17•15m ago•0 comments

Soviet Life – Cinema of the People (March 2026)

https://claude.ai/public/artifacts/df9a1f48-8906-4315-9069-59ec4683aa15
1•water_badger•16m ago•0 comments

xAI's Macrohard project stalls as Tesla ramps up a similar AI agent effort

https://www.businessinsider.com/xai-macrohard-project-tesla-ai-agent-stalls-2026-3
4•spenvo•17m ago•0 comments

Everyone is building AI trust frameworks; almost no one is reading the research

https://weightedthoughts.substack.com/p/everyones-building-trust-frameworks
4•ylliprifti•17m ago•1 comments

Perplexity Personal Computer

https://twitter.com/perplexity_ai/status/2031790180521427166
2•hmokiguess•18m ago•0 comments