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Bloom's two sigma problem (2020)

https://nintil.com/bloom-sigma
8•Tomte•10mo ago

Comments

trane_project•10mo 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/

Reversing and Replicating Compute 'S MLX

https://bumbershootsoft.wordpress.com/2026/03/28/reversing-and-replicating-computes-mlx/
1•ibobev•35s ago•0 comments

Humble Tech Book Bundle: Linux, the Good Stuff by No Starch

https://www.humblebundle.com/books/linux-good-stuff-no-starch-books
1•ibobev•1m ago•0 comments

Atari ST Tribute

https://atari-st-tribute.blogspot.com/
1•ibobev•1m ago•0 comments

Introducing Kern: AI agents built for coworking

https://kern-ai.com/blog/introducing-kern
1•obilgic•4m ago•0 comments

Are there enough EV chargers near you?

https://www.evcourse.com/chargers
3•userium•7m ago•0 comments

EnigmaPython v3.1.0 supporting the rare Enigma K (Swiss variant)

https://github.com/denismaggior8/enigma-python
3•denismaggior8•13m ago•0 comments

Show HN: Video Poker Trainer

https://classicvideopoker.com/classicvideopokerv2/index_trainer.php
3•appstorelottery•14m ago•0 comments

Axios 1.14.1 and 0.30.4 Compromised via Stolen Maintainer Account on NPM

https://safedep.io/axios-npm-supply-chain-compromise/
7•birdculture•21m ago•0 comments

Show HN: Pardus Browser- a browser for AI agents without Chromium

https://github.com/JasonHonKL/PardusBrowser/tree/main
4•JasonHEIN•22m ago•0 comments

30 Years Ago, Robots Learned to Walk Without Falling

https://spectrum.ieee.org/honda-p2-robot-ieee-milestone
4•MindGods•25m ago•0 comments

The "scanner report has to be green" trap

https://ubuntu.com//blog/stability-backports-and-hidden-risks-of-the-bleeding-edge
4•jruohonen•25m ago•0 comments

OWASP PTK 9.8.0 with auto-discovery for bug bounty

3•DenisPodgurskii•26m ago•0 comments

Entirety of Wikinews to be shut down

https://en.wikipedia.org/wiki/Wikipedia:Wikipedia_Signpost/2026-03-31/News_and_notes
8•CamelCaseCondo•26m ago•0 comments

Court of appeal says it cannot rule on which identical twin fathered a child

https://www.theguardian.com/society/2026/mar/30/court-of-appeal-says-it-cannot-rule-on-which-iden...
3•YeGoblynQueenne•28m ago•0 comments

Why chatbot therapists can't offer what we need

https://psyche.co/ideas/why-chatbot-therapists-cant-offer-what-we-need
3•herbertl•28m ago•0 comments

Breaking the Warranty with Go:Linkname

https://mcyoung.xyz/2026/03/31/shame/
3•ingve•29m ago•0 comments

Just redesigned my personal site with a TTY-style interface

https://abdisa.dev
3•abdisaDev•30m ago•1 comments

Building Limberly, Part 1: We're Not Moving Enough

https://prodzen.dev/articles/building-limberly-part-1-we-re-not-moving-enough/
4•frail_figure•36m ago•1 comments

Show HN: My own moonshot GIS newclear energy infrastructure

https://wes-core-grid.base44.app
3•wesley-Alan•40m ago•0 comments

Ask HN: What do you use for local embeddings?

3•asim•40m ago•0 comments

Built a desktop customization app – TRY IT

https://overlayos.veinpal.com/download
3•yosrbn•41m ago•1 comments

Show HN: DreamGraph – An autonomous cognitive layer for software systems

https://github.com/mmethodz/dreamgraph
4•mmethodz•41m ago•0 comments

7,655 Ransomware Claims in One Year: Group, Sector, and Country Breakdown

https://ciphercue.com/blog/7655-ransomware-claims-march-2025-to-march-2026
10•adulion•41m ago•0 comments

Claude Code Source Code Leaked (2026-03-31)

https://github.com/instructkr/claude-code
5•0xkato•42m ago•0 comments

Palantir's UK boss criticises 'ideological' groups as ... scrap NHS contract

https://www.theguardian.com/technology/2026/mar/31/palantir-uk-boss-louis-mosley-ministers-nhs-co...
3•chrisjj•42m ago•4 comments

What machine readable wishes could do for your social death? [video]

https://cubicgarden.com/2026/03/10/what-machine-readable-wishes-could-do-for-your-social-death/
1•adrianhoward•45m ago•0 comments

Building Political Superintelligence

https://freesystems.substack.com/p/building-political-superintelligence
2•m-hodges•46m ago•0 comments

Micropackages and Open Source Trust Scaling

https://lucumr.pocoo.org/2016/3/24/open-source-trust-scaling/
2•the_mitsuhiko•47m ago•1 comments

Show HN: HCaptcha Reverse Engineered

https://github.com/ak3zaidan/hCAPTCHA-Solver
4•ishqdehlvi•47m ago•1 comments

Italy Denies US Aircraft Access to Military Base

https://www.bloomberg.com/news/articles/2026-03-31/italy-denies-us-aircraft-access-to-military-ba...
3•vrganj•51m ago•1 comments