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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: Claude Code Open – AI Coding Platform with Web IDE and Agents

https://github.com/kill136/claude-code-open
1•694623326•3m ago•0 comments

24 Simultaneous Claude Code agents on local hardware

https://github.com/Mattbusel/tokio-prompt-orchestrator
1•Shmungus•3m ago•1 comments

Taalas Etches AI Models onto Transistors to Rocket Boost Inference

https://www.nextplatform.com/2026/02/19/taalas-etches-ai-models-onto-transistors-to-rocket-boost-...
1•hochmartinez•5m ago•0 comments

Elixir's Original Readme (2011)

https://github.com/elixir-lang/elixir/tree/ae3bdb72eb5a3d3bc80b4335a47579b533b0537b
1•sergiomattei•5m ago•0 comments

Armatron

https://armatron.vercel.app/
1•thomasfromcdnjs•12m ago•0 comments

Sanders warns US has no clue about speed and scale of coming AI revolution

https://www.theguardian.com/us-news/2026/feb/21/ai-revolution-bernie-sanders-warning
1•thunderbong•12m ago•0 comments

PostHog's 404 Page

https://posthog.com/skdjghdjkfhgkjhdfg
1•howToTestFE•13m ago•1 comments

Perplexity Pro promo subscription suspended without explanation?

1•aanno•15m ago•0 comments

Indian food delivery giant leak location metadata,food preferences to strangers

https://medium.com/@jatin.b.rx3/how-a-zomato-feature-enables-stalking-which-they-call-working-as-...
1•jatin-dot-py•16m ago•0 comments

Building a language that people want

https://blog.merigoux.fr/en/2026/02/19/building-proper-pl.html
1•art-w•17m ago•0 comments

Palantir Captured the UK Ministry of Defence

https://www.ft.com/content/5207928a-13e8-4832-8c6f-2e78740c16c9
2•macleginn•18m ago•0 comments

Code has always been the easy part

https://laughingmeme.org/2026/02/09/code-has-always-been-the-easy-part.html
2•Ozzie_osman•20m ago•0 comments

What Happened to Software Is Happening to Finance and Accounting

https://doempke.com/what-happened-to-software-is-happening-to-finance-and-accounting/
2•robk•20m ago•0 comments

Rare Blood Clots After Certain Covid Vaccines

https://www.mcgill.ca/oss/article/covid-19-medical-health-and-nutrition-technology/rare-blood-clo...
3•cyrc•22m ago•0 comments

Show HN: Shellspec – DSL to Test CLIs

https://github.com/itsfarseen/shellspec
1•itsfarseen-1•23m ago•0 comments

Ask HN: Best file format for AI reports output?

1•azkalam•34m ago•0 comments

A distributed queue in a single JSON file on object storage

https://turbopuffer.com/blog/object-storage-queue
3•Sirupsen•34m ago•0 comments

Show HN: Go Implementation of Systemd Time

https://gitlab.com/allddd/go-systemd-time
1•allddd•36m ago•0 comments

Joseph Weizenbaum's Hackerkritik

https://sdf.org/~pkal/src+etc/hacker-kritik.html
1•pkal•38m ago•0 comments

Relooted, a game where you take back stolen African artifacts from museums

https://www.theguardian.com/games/2026/feb/21/south-african-video-game-artefacts-western-museums
1•atombender•43m ago•0 comments

'Psychological torture': Spanish tenants fight back against housing 'harassment'

https://www.theguardian.com/world/2026/feb/21/spanish-tenants-fight-back-against-housing-harassme...
1•Geekette•44m ago•0 comments

Launch of Dozy

https://www.dozy.site/
1•david-kelen•45m ago•1 comments

Moltbook-CLI – crates.io: Rust Package Registry

https://crates.io/crates/moltbook-cli
1•kelexine•52m ago•0 comments

Show HN: RealDeed PropPass – Own Indian Real Estate Digitally from INR 10k

https://realdeed.in/
1•oxfpr555•53m ago•0 comments

Google Is Exploring Ways to Use Its Financial Might to Take on Nvidia

https://www.wsj.com/tech/ai/google-is-exploring-ways-to-use-its-financial-might-to-take-on-nvidia...
3•JumpCrisscross•55m ago•0 comments

Lindenmayer Systems

https://justinpombrio.net/2026/02/16/l-systems.html
1•birdculture•58m ago•0 comments

Baby chick study challenges a theory of how humans evolved language

https://www.scientificamerican.com/article/baby-chicks-pass-the-bouba-kiki-test-challenging-a-the...
1•atombender•1h ago•0 comments

Search and analyze documents from the DOJ Epstein Files release with local LLM

https://github.com/artmedlar/epstein-files-analyzer
2•edward•1h ago•0 comments

Show HN: Sketchdown – Wireframes as code, like Mermaid but for UI mockups

https://www.sketchdown.dev/
1•alexxozo2•1h ago•1 comments

Searching for Birds

https://SearchingForBirds.VisualCinnamon.com/
1•the-mitr•1h ago•0 comments