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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/

Why do I feel bad following recommendation algorithms?

https://edwardbx.com/articles/recommendation-algorithms/
1•crassus_ed•12s ago•0 comments

Show HN: A Toby alternative with vertical tabs and no forced new tab override

https://getorganice.vercel.app
1•tankhoa2308•1m ago•0 comments

The Danger of Shipping Fast

https://newsletter.posthog.com/p/the-hidden-danger-of-shipping-fast
1•tchalla•1m ago•0 comments

A Tree of AI Model Names

https://sajarin.com/blog/modeltree/
1•Sajarin•1m ago•0 comments

You Never See the Whole Shape at Once

https://www.robpanico.com/articles/display/?entry_short=you-never-see-the-whole-shape-at-once
1•retrocog•4m ago•0 comments

Show HN: The Yatima Scale – Measuring civilizations by depth, not energy

https://yatima-scale.netlify.app
1•gillesturpin•5m ago•0 comments

Zero-Knowledge Encryption: A Security Analysis of Cloud-Based Password Managers

https://zkae.io/
2•mlegner•5m ago•1 comments

Monolith – muddying the waters of the digital copyright debate (2011)

https://monolith.sourceforge.net
1•helloplanets•5m ago•0 comments

Google criticizes Europe's plan to adopt free software

https://piefed.zip/c/technology/p/1086069/google-criticizes-europe-s-plan-to-adopt-free-software
2•zoobab•5m ago•0 comments

Forth is just fast Lisp (2017)

https://old.reddit.com/r/Forth/comments/5wsbgr/forth_is_just_fast_lisp/
1•tosh•6m ago•0 comments

Do LLMs hallucinate more in Czech than in English?

https://svana.name/2026/02/do-llms-hallucinate-more-in-czech-than-in-english/
1•msvana•6m ago•0 comments

India orders social media firms to remove unlawful content within three hours

https://www.bbc.com/news/articles/c2lrn8q2q24o
1•thisislife2•11m ago•2 comments

Evolution "Doesn't Need" Mutation. Here's Proof. - Blaise Agüera y Arcas [video]

https://www.youtube.com/watch?v=M2iX6HQOoLg
1•bob1029•11m ago•0 comments

Show HN: Turning web highlights into deterministic Markdown (Sigilla)

1•northerndev•13m ago•0 comments

Ask HN: Do LLM agents need a separate safety layer?

2•amabito•13m ago•0 comments

Show HN: MLX-Ruby – Ruby Bindings for Apple's MLX ML Framework

https://github.com/skryl/mlx-ruby
1•skryl•16m ago•1 comments

OpenClaw Partners with VirusTotal for Skill Security

https://openclaw.ai/blog/virustotal-partnership
1•yoursmanikandan•20m ago•0 comments

Show HN: chowder.dev is a single API for deploying OpenClaw instances

https://www.chowder.dev/
1•egrigokhan•22m ago•0 comments

Parallel Translation at 216x Human Speed

https://www.racecondition.software/blog/parallel-translation/
1•ingve•23m ago•0 comments

Show HN: LockFS is a flexible file-by-file encryption for secure storage

https://github.com/ghost-in-a-jar-00/LockFS
1•0xGhostInAJar•23m ago•0 comments

picol: A Tcl interpreter in 500 lines of code

https://github.com/antirez/picol
4•tosh•25m ago•1 comments

Haloy

https://github.com/haloydev/haloy
1•handfuloflight•26m ago•0 comments

Quando un'impresa di food prova a restituire senso alla città

https://blocknotes.substack.com/p/oltre-i-quattro-canti-la-bottega
1•ilsuddista•27m ago•0 comments

China moves to ban yoke steering wheel after cracking down on flush door handles

https://www.autoblog.com/news/china-moves-to-ban-yoke-steering-wheels-after-cracking-down-on-flus...
2•teleforce•29m ago•0 comments

A Local Directory Browser

https://kaizoku.digital/tools/directory-browser/index.html
1•musti_92•31m ago•0 comments

uxn2

https://git.sr.ht/~rabbits/uxn2
1•tosh•32m ago•0 comments

I learn ML better by seeing it work, so I built visual debuggers

https://stepbyml.com/
1•mkairanbay•36m ago•0 comments

Show HN: FluxDown – Free download manager built with Rust and Flutter

https://fluxdown.zerx.dev
1•zero-lab•37m ago•0 comments

WA small businesses struggle to keep up with health insurance hikes

https://www.seattletimes.com/business/wa-small-businesses-struggle-to-keep-up-with-health-insuran...
1•petethomas•40m ago•0 comments

Aided by AI, Santa Monica broadens hunt for bike and bus lane blockers

https://arstechnica.com/tech-policy/2026/02/santa-monica-deploys-ai-powered-parking-cameras-to-pr...
1•thrawn0r•40m ago•0 comments