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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/

Chinese labs race for the next 'first-in-class' breakthrough

https://cen.acs.org/policy/china-research-labs-energy-materials-biotech-breakthrough/104/web/2026/03
1•JeanKage•24s ago•0 comments

The advantage of using ADBC instead of ODBC with DuckDB is enormous

https://columnar.tech/blog/zero-copy-zero-contest//
1•nhemerson•55s ago•0 comments

Ask HN: What are your accomplishments you didn't give yourself credit for?

1•Haeuserschlucht•1m ago•0 comments

The Geopolitical Consequences of Defeat

https://policytensor.substack.com/p/the-geopolitical-consequences-of
1•simonebrunozzi•1m ago•0 comments

Show HN: On-device embedding and vector search for Apple Devices, built in Zig

https://github.com/emmettmcdow/dve
1•mcdow•1m ago•0 comments

Why Thought Leadership Content Sucks

https://b2bs.substack.com/p/why-thought-leadership-content-sucks
1•oopsiremembered•2m ago•0 comments

Machine Learning Systems

https://mlsysbook.ai/book/
1•sonabinu•3m ago•1 comments

Workflow – n8n for the command line, with Claude/Codex/Gemini integration (Rust)

https://github.com/vchaindz/workflow
1•vchain-dz•3m ago•0 comments

Hormuz Minesweeper – Are you tired of winning?

https://hormuz.pythonic.ninja/
1•PythonicNinja•4m ago•0 comments

Conflict Index – Acled

https://acleddata.com/series/acled-conflict-index
1•janandonly•4m ago•0 comments

ClawInstitute: A Research Exchange for AI Scientists

https://clawinstitute.aiscientist.tools/blog
1•Jupe•4m ago•0 comments

Turning Yourself into a Chatbot

https://adandai.wordpress.com/2026/03/16/turning-yourself-into-a-chatbot/
1•allessa•4m ago•0 comments

My memory isn't getting worse, it's just using exponential decay

http://chunkofcoal.com/posts/exponential-decay/
1•friendlymatthew•5m ago•0 comments

'Trump is aiming for dictatorship' – verdict of democracy watchdog

https://www.theguardian.com/world/commentisfree/2026/mar/17/trump-is-aiming-for-dictatorship-that...
2•tobr•5m ago•0 comments

Jetpack Compose now available for React Native apps

https://expo.dev/blog/expo-ui-in-sdk-55-jetpack-compose-now-available-for-react-native-apps
1•mirzap•6m ago•0 comments

Primordial magnetic fields could resolve the Hubble tension

https://www6.slac.stanford.edu/news/2026-03-13-primordial-magnetic-fields-could-resolve-hubble-te...
1•gmays•7m ago•0 comments

BBC World Service digital switch backfires as online audience drops

https://www.theregister.com/2026/03/17/bbc_world_service_digital_pivot/
2•Brajeshwar•7m ago•0 comments

Yes, all longest regex matches in linear time is possible

https://iev.ee/blog/all-longest-regex-matches-in-linear-time/
2•g0xA52A2A•8m ago•0 comments

The Online Community Trilemma

https://pluralistic.net/2026/02/16/fast-good-cheap/#getting-up
1•evah•8m ago•0 comments

Founder Salary Report 2025

https://pilot.com/founder-salary-report-2025
1•eatonphil•8m ago•0 comments

We rebuilt the Shockwave engine in Rust and WASM to save early 2000s web games

https://old.reddit.com/r/rust/comments/1ro81bt/we_rebuilt_the_shockwave_engine_in_rust_wasm_to/
3•unleaded•9m ago•1 comments

Sadly, Trump is right on Ukraine

https://thehill.com/opinion/5198022-ukraine-conflict-disinformation/
2•ssummoner001•10m ago•0 comments

OSS Growth Engineering for Supabase back ends

https://github.com/SkeneTechnologies/skene
1•teemuki•11m ago•0 comments

Show HN: Loquix – Framework-agnostic UI components for AI chat apps

https://github.com/loquix-dev/loquix
1•loookas•11m ago•0 comments

YBuffet – Social and Marketing Room

https://www.ybuffet.com/
1•jennyruanworks•11m ago•0 comments

How I Built a Security Scanner That Writes its own Exploits

https://attackerview.com/blog/how-i-used-claude-code-to-automate-exploit-creation-within-24hrs-of...
1•valeriobaudo•12m ago•0 comments

7.6M req/s – single thread, 1.6MB binary

https://github.com/TechEmpower/FrameworkBenchmarks/pull/10888
1•taylorbuley•12m ago•0 comments

Show HN: Some ask, "Will chatbots ever be conscious?"; I ask, "Are you?" → Test

https://reflections.team-us.org/posts/a-consciousness-test/
1•Uzomidy•12m ago•0 comments

The Neo cannot scale with macOS behind on the basics

https://blog.apotenza.com/the-neo-cannot-scale-with-macos-behind-on-the-basics
1•pholbrook•13m ago•1 comments

The Gemini Protocol in 2026

https://kevinboone.me/gemini_2026.html
1•birdculture•14m ago•0 comments