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Bloom's two sigma problem (2020)

https://nintil.com/bloom-sigma
8•Tomte•1y ago

Comments

trane_project•1y 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: FileoPDF, PDF tools that process your files in the browser

https://www.fileopdf.com/en
1•Horatio148•44s ago•0 comments

Show HN: A Safari extension to accelerate animated WebP images

https://github.com/IliaMManolov/safari-animated-webp-extension
1•76SlashDolphin•3m ago•0 comments

SQLAlchemy 2.1.0 Released

https://www.sqlalchemy.org/blog/2026/09/24/sqlalchemy-2.1.0-released/
1•kbumsik•4m ago•0 comments

Terence Tao: Math 2.0 [pdf]

https://teorth.github.io/tao-web/slides/math-2-0-caltech-2026.pdf
1•Anon84•5m ago•0 comments

Show HN: My radio station calls its listeners

https://canarics.com/radio
3•attels33•12m ago•0 comments

MicroG: [Bounty] RCS Support [$14999]

https://github.com/microg/GmsCore/issues/2994
1•BoingBoomTschak•13m ago•0 comments

About the Book: Solving the Bottom Turtle

https://spiffe.io/book/
1•cgeier•13m ago•1 comments

AWS AgentCore security undone by prompt requesting credentials

https://www.theregister.com/security/2026/10/09/aws-agentcore-security-undone-by-prompt-requestin...
1•sbulaev•15m ago•0 comments

How HN: Go-dev-auth zero-dependency authentication library for Go

https://github.com/go-dev-auth/go-dev-auth
3•BisratMelak•16m ago•0 comments

Choreographic Programming in Rust

https://github.com/hibanaworks/hibana
1•o8vm•17m ago•1 comments

Measuring Cryptanalytic Effort

https://bitsofwork.org
1•torutofu•17m ago•0 comments

Twenty-two pending curl vulnerabilities

https://daniel.haxx.se/blog/2026/10/07/twenty-two-pending-curl-vulnerabilities/
1•Tomte•19m ago•0 comments

Bot traffic plunged to near 0 following the strike on its Vladimir data center

https://bsky.app/profile/perevaa.bsky.social/post/3mxlm6w2wcs26
3•PLenz•22m ago•0 comments

Memory Management (2022)

https://signalsandthreads.com/memory-management/
1•tosh•27m ago•0 comments

Building Houses with Rice Waste

https://www.bbc.com/future/article/20261009-the-houses-made-from-rice-husks
2•ranit•29m ago•0 comments

Singapore's government team that kills its own products

https://www.businesstimes.com.sg/singapore/inside-singapores-government-team-kills-its-own-products
3•doppp•30m ago•0 comments

Show HN: The great-grandfather of Oberon: Algol 60 running on LuaJIT

https://github.com/rochus-keller/Algol60
1•Rochus•39m ago•0 comments

Ferroni – Oniguruma's regex engine, modernized in Rust

https://ferroni.dev/
1•indentit•40m ago•0 comments

Taiwan man won lawsuit but jailed for using robot vacuum to record wife's affair

https://www.scmp.com/news/people-culture/trending-china/article/3365381/taiwan-man-wins-lawsuit-g...
2•nephihaha•41m ago•1 comments

Trama – See your agent's changes as state machines before any code

https://github.com/nicchia-code/trama
2•nicchia•44m ago•0 comments

Show HN: Hexnoth. Dark fantasy turn-based tactics in the browser

https://hexnoth.com/
1•jdzikowski•44m ago•0 comments

The maverick scientist trying to save coffee from extinction

https://economist.com/interactive/1843/2026/07/23/the-maverick-scientist-trying-to-save-coffee-fr...
1•andsoitis•44m ago•0 comments

Show HN: Claude Code Mode

https://github.com/gabe4coding/claude-code-mode
1•gabe4coding•45m ago•1 comments

Show HN: Termphin – Open-source SSH client whose sessions survive disconnects

https://github.com/Termphin/Termphin
1•mbadyl•53m ago•0 comments

You Can See the Results

https://docs.google.com/document/d/e/2PACX-1vQmQ6YjfD2BKWfhW8iKJJCqPygQfQpNMhF5qSwHkoJSt8d1GLPU4z...
1•GovNikoMLLee•57m ago•0 comments

Show HN: Gradually Loading Web Fonts

https://www.npmjs.com/package/invisible-ink
1•snshn•59m ago•1 comments

Can Switching Hands While I Masturbate Affect My Brain?

https://sex.cosmopolitan.com/pleasure/a73946773/masturbating-non-dominant-hand-good-for-brain/
5•snarky-comments•1h ago•2 comments

What a US purchase costs delivered to 16 countries

https://www.refurb.me/import-costs
2•simoelalj•1h ago•0 comments

Fetching AMD SEV Reports (With Zig)

https://github.com/bschaatsbergen/zig-sev-guest
3•bschaatsbergen•1h ago•1 comments

Don't Put Tilde In Your Path

https://disconnect3d.pl//2026/10/02/dont-put-tilde-in-your-path/
28•arusekk•1h ago•1 comments