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Bloom's two sigma problem (2020)

https://nintil.com/bloom-sigma
8•Tomte•11mo ago

Comments

trane_project•11mo 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/

Texas county pauses data center construction in rural areas

https://www.texastribune.org/2026/05/12/texas-hill-county-approves-data-center-construction-pause...
1•gmays•30s ago•0 comments

Deal reached with hackers to delete data stolen from the Canvas platform

https://www.nbcnews.com/tech/tech-news/deal-reached-hackers-delete-data-stolen-canvas-educational...
1•fortran77•1m ago•1 comments

Show HN: Nanci, CI written in plain Python, locally debuggable

https://nanci.dev/
1•Hex08•1m ago•0 comments

One in seven in UK prefer consulting AI chatbots to seeing doctor, study finds

https://www.theguardian.com/society/2026/may/13/one-in-seven-prefer-ai-chatbots-to-seeing-doctor-...
1•Brajeshwar•1m ago•0 comments

Blanet

https://en.wikipedia.org/wiki/Blanet
1•JumpCrisscross•3m ago•0 comments

A field manual for Deutsche Bahn

https://blog.hofstede.it/a-field-manual-for-three-years-on-deutsche-bahn/
1•fanf2•4m ago•0 comments

Plasma secrets: Windows position for naughty apps

https://www.dedoimedo.com/computers/plasma-window-position-2026.html
2•speckx•6m ago•0 comments

World's first laughing gas breathalyser trialled in England

https://news.sky.com/video/worlds-first-laughing-gas-breathalyser-trialled-in-england-13544036
1•austinallegro•6m ago•0 comments

Austin's population tops 1M residents for the first time

https://www.statesman.com/business/article/austin-population-tops-1-million-22258805.php
1•_JamesA_•6m ago•0 comments

Celebrating 10 Years of the MITx MicroMasters Programs

https://impact-openlearning.mit.edu/celebrating-10-years-of-the-mitx-micromasters-programs
1•raybb•7m ago•0 comments

GitHub Copilot's new desktop app

https://github.com/github/app
1•prosim•7m ago•1 comments

Bun's Rust rewrite has been merged

https://old.reddit.com/r/rust/comments/1tcrmjs/rewrite_bun_in_rust_has_been_merged/
1•ale•8m ago•0 comments

AI, open code and vulnerability risk in the public sector (UK)

https://www.gov.uk/guidance/ai-open-code-and-vulnerability-risk-in-the-public-sector
1•RobinL•11m ago•0 comments

How the Bird Eye Was Pushed to an Evolutionary Extreme

https://www.quantamagazine.org/how-the-bird-eye-was-pushed-to-an-evolutionary-extreme-20260513/
2•Brajeshwar•11m ago•0 comments

Why Do We Interface?

https://whydoweinterface.com/
2•structuredPizza•12m ago•0 comments

Jane Street Interview Simulator

https://janestreet.gg/
1•Jeanbu•12m ago•0 comments

A Single Infusion Could Suppress HIV for Years

https://www.nytimes.com/2026/05/11/health/hiv-infusion-immunotherapy.html
1•gmays•12m ago•0 comments

Discover Crosspad the best finger drumming web app

https://crosspad.app/
1•Brosper•17m ago•0 comments

Physics Guarantees the Datasphere Keeps Expanding (and What It Means for Agents)

https://twitter.com/i/status/2054961517767061668
1•dataranger•18m ago•0 comments

Show HN: BlitzGraph – Supabase for graphs, designed for LLM agents

https://blitzgraph.com
1•lveillard•19m ago•0 comments

Ambient Intents

https://xcancel.com/timourxyz/status/2054589504934273373
1•yurivish•19m ago•0 comments

Cannabis and driving? Studies reveal big risks

https://news.cuanschutz.edu/news-stories/cannabis-and-driving-studies-reveal-big-risks
3•PaulHoule•19m ago•0 comments

AI models are being used to predict conflict

https://www.economist.com/science-and-technology/2026/05/13/ai-models-are-being-used-to-predict-c...
2•Brajeshwar•20m ago•0 comments

Entire - How We Improved Agentic Search

https://entire.io/blog/improving-agentic-search-in-coding-agents
1•tanishqkanc•21m ago•0 comments

Claude Code cost observability to prevent tokenmaxxing

https://github.com/delta-hq/cc-ledger
1•tsv650•21m ago•1 comments

Which programming language is fastest?

https://benchmarksgame-team.pages.debian.net/benchmarksgame/index.html
1•tosh•21m ago•0 comments

Synthetic evaluation datasets for testing AI agents before production deployment

https://paixblox.github.io/learned/
1•cemillxchange•22m ago•0 comments

What's in a GGUF, besides the weights – and what's still missing?

https://nobodywho.ooo/posts/whats-in-a-gguf/
2•bashbjorn•24m ago•0 comments

The coming AI jobs-pocalypse

https://katecarruthers.com/ai-jobs-future/
1•speckx•25m ago•3 comments

Show HN: Pokémon SVG Generation LLM Benchmark

https://svg-bench.fenx.work/
2•haxfenx•25m ago•0 comments