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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/

Transforming a Clojure Database into a Polyglot Library with GraalVM and FFI

https://avelino.run/chrondb-polyglot-ffi-clojure-graalvm-native-image/
1•avelino•26s ago•1 comments

Show HN: Git course integrated into VSCode and Cursor

https://gitbybit.com
1•neochief•52s ago•0 comments

Sir-tech's Last Words (1998)

https://www.ign.com/articles/1998/10/16/sir-techs-last-words
1•bananaboy•1m ago•0 comments

Intel's Panther Lake Chip is its biggest win in years

https://www.wired.com/story/intel-panther-lake-core-ultra-series-3-review/
1•teleforce•4m ago•0 comments

Lean4 Formalization of "A Simplified Round-by-Round Soundness Proof of Fri"

https://blog.zksecurity.xyz/posts/simple-rbr-fri/
1•baby•7m ago•0 comments

What Is Agent Experience (Ax) and Why Should You Care?

https://techstackups.com/guides/what-is-agent-experience-and-why-should-you-care/
1•sixhobbits•11m ago•0 comments

I analyzed 44K companies to see who uses Claude or Perplexity

https://bloomberry.com/blog/we-analyzed-44k-companies-to-see-who-uses-claude-or-perplexity/
1•AznHisoka•11m ago•0 comments

Show HN: Tfstate-audit – search/diff Terraform state history (S3/GCS/Azure/HCP)

https://github.com/BetaFold3/tfstate-audit
1•rngacc•12m ago•1 comments

Ask HN: Have you seen Claude Code answering its own questions today?

1•sixhobbits•13m ago•0 comments

After switch from ULA, SpaceX set for speedy national security launch

https://phys.org/news/2026-01-ula-spacex-speedy-national.html
1•bookmtn•13m ago•0 comments

The monorepo: my personal software infrastructure

https://iafisher.com/blog/2026/01/monorepo-2026
1•thornewolf•16m ago•1 comments

NASA Demolishes Historic Test Stands That Built the Space Age

https://www.universetoday.com/articles/nasa-bids-farewell-to-historic-test-stands-that-built-the-...
1•oldnetguy•16m ago•0 comments

The Project G Stereo Was the Definition of Groovy

https://spectrum.ieee.org/project-g-stereo
1•oldnetguy•17m ago•0 comments

Show HN: Oauth2-Proxy-Injector

https://github.com/spacemule/oauth2-proxy-injector
1•spacemule•22m ago•0 comments

Addressing the Lack of Built-In Storage in UK Housing

https://dreamhomestore.co.uk/collections/bedroom-furniture-sets
1•tonypaterson•22m ago•2 comments

The birth of a WATERBEAR 1000x magnification [video]

https://www.youtube.com/shorts/d3jvvqwaaIE
1•surprisetalk•23m ago•0 comments

Snowflake Koch Fractal

https://xaya-e.bearblog.dev/11-xaya-advent/
1•surprisetalk•23m ago•0 comments

The 80s Movies Rewind

https://www.fast-rewind.com/index.html
1•surprisetalk•24m ago•0 comments

Most Code Is Just Cache

https://blog.sshh.io/p/most-code-is-just-cache
1•surprisetalk•24m ago•0 comments

Glass Onion by US Soccer, an Identifier Synchronization Tool

https://www.americansocceranalysis.com/home/2026/1/25/introducing-glass-onion-by-us-soccer-an-ide...
1•donohoe•25m ago•0 comments

A 3-part series on SQL performance optimisations

https://ohdear.app/news-and-updates/our-3-part-series-on-sql-performance-optimisations
1•Mojah•27m ago•0 comments

Why is there no recent fiction with software engineer protagonists?

1•yedidmh•28m ago•0 comments

Gonemaster: A Golang clone of the Zonemaster DNS checker

https://codeberg.org/pawal/gonemaster
1•fanf2•28m ago•1 comments

Library of Congress Pywb Wayback Machine

https://webarchive-beta.loc.gov/playback-services/general/
1•fuggh•30m ago•0 comments

Show HN: Adversarial AIs debate your question, a judge picks the winner

https://mindhalo.ai/debates/
1•ivanmikhnenkov•31m ago•0 comments

Apple to Launch These 20 Products This Year

https://www.macrumors.com/2026/01/25/rumored-apple-products/
1•01-_-•32m ago•0 comments

Self-Recognition in Conversational Agents

https://arxiv.org/abs/2002.02334
1•elasolova•34m ago•0 comments

Joyus: I Tried Datastar

https://ajmoon.com/posts/joyus-i-tried-datastar
1•alex-moon•38m ago•0 comments

Ultimate Guide to LLM Memory

https://fastpaca.com/blog/ultimate-guide-to-llm-memory/
1•cpluss•38m ago•0 comments

Spinning Around: Please Don't

https://www.siliceum.com/en/blog/post/spinning-around/
2•todsacerdoti•38m ago•0 comments