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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: The UI AI-Slop game. No one can resist 5 minutes

https://ai-rush.lol/
1•federicoTXTS•1m ago•0 comments

WikiSkill: Compiling Agent Experience for Skill Evolution

https://arxiv.org/abs/2608.27454
1•joshcorbin•2m ago•0 comments

Prediction Markets Should Be Regulated as Gambling, Appeals Court Says

https://www.nytimes.com/2026/08/28/technology/kalshi-prediction-markets-federal-courts.html
1•sbulaev•2m ago•0 comments

Pikuma: From Front Panel to Program: Thinking Like a PDP-8

https://pikuma.com/blog/pdp-8-minicomputer
1•rbanffy•5m ago•0 comments

Serpentseye

https://serpentseye.io/
1•amirmaimoncs•7m ago•0 comments

Playing cards with an IDE – See how

https://editor.thedevcards.com/ndinda_codes
1•okiki-clickdrop•12m ago•0 comments

Coding a Database Proxy for Fun

https://packagemain.tech/p/golang-database-proxy
1•der_gopher•12m ago•0 comments

Hypothetical Paintings and Why AI-Generated Art Can Feel Soulless

https://decodingvibes.com/blog/3-hypothetical-paintings-and-why-ai-generated-art-can-feel-soulless/
1•altmanaltman•16m ago•0 comments

Host your own RTK Base

https://www.centipede-rtk.org/host-rtk-base
1•altilunium•18m ago•0 comments

LightSwitch – In-Network and Photonic LLM Inference in Transit

https://github.com/pisantifrancesco89/Project-LightSwitch
1•Shibano89•18m ago•0 comments

"Hopefully a meteor will strike the Earth soon": Game devs talk GenAI witchhunts

https://www.rockpapershotgun.com/hopefully-a-meteor-will-strike-the-earth-soon-game-devs-talk-gen...
1•Tomte•21m ago•0 comments

NVMe 2.4 Update Adds Post-Quantum Security, Power Controls

https://www.eetimes.com/nvme-2-4-update-adds-post-quantum-security-power-controls/
1•giuliomagnifico•21m ago•0 comments

Gertieboard Is an IBM PC/XT Clone That Blends Vintage and Modern Hardware

https://www.hackster.io/news/gertieboard-is-an-ibm-pc-xt-clone-that-blends-vintage-and-modern-har...
1•rbanffy•24m ago•0 comments

Whose Is This Song?

https://substack.com/sign-in
1•feldrim•25m ago•0 comments

The Killer Cable Snap – MythBusters (2006) [video]

https://www.youtube.com/watch?v=XEnuL45hr_g
1•joebig•26m ago•1 comments

A Collectivist, Economic Vision for AI

https://cacm.acm.org/research/a-collectivist-economic-vision-for-ai/
1•visha1v•34m ago•0 comments

Automated researchers can reliably mitigate alignment failures

https://www.anthropic.com/research/automated-researchers-mitigate-alignment-failures
1•EvgeniyZh•39m ago•0 comments

Show HN: Hikaru – image compression that hits an exact file size, no slider

https://hikarulabs.xyz
1•CFBL•40m ago•0 comments

The Ultimate Dream

https://blog.br11k.dev/2026-08-29-the-ultimate-dream
1•konovalov-nk•44m ago•1 comments

Git.kernel.org Is "Interesting" to Crawlers

https://people.kernel.org/monsieuricon/creepy-crawlies
3•sohkamyung•45m ago•1 comments

Show HN: Snippety – a native text expander for Mac and iPhone

https://snippety.app
2•snippety•45m ago•1 comments

We Ran Code Inside Fortune 500s Using Files They Published for AI Agents

https://medium.com/@alonhertz1/data-became-code-we-ran-code-inside-fortune-500s-using-files-they-...
3•nizbit•46m ago•1 comments

Does Computer Science Need Computers?

https://www.quantamagazine.org/does-computer-science-need-computers-20260828/
2•rbanffy•47m ago•0 comments

You Know GDPR Is Good Based on Who Hates It

https://matduggan.com/you-know-gdpr-is-good-based-on-who-hates-it/
26•latexr•50m ago•19 comments

Making $2.7M a Year Selling Ice in NYC [video]

https://www.youtube.com/watch?v=iGejCONYVjA
1•binyu•50m ago•0 comments

I ran a little experiment: could I make agent memory deterministic

https://www.lorekit.io/blog/agent-memory-data-model
1•mthines•51m ago•0 comments

Adversarial Interoperability

https://www.eff.org/deeplinks/2019/10/adversarial-interoperability
1•orphereus•57m ago•0 comments

"Lead through code" – engineering managers getting squeezed

https://www.youtube.com/watch?v=MPVmV-6O5to
1•lifeisstillgood•57m ago•0 comments

Show HN: Player vs. Computer

https://github.com/Rubinoslaw/Player-vs-Computer/
1•PolishDevelop22•1h ago•0 comments

LuaDB: Lightweight, embeddable, zero-dependency RDBMS written 100% in pure Lua

https://github.com/jncastilho/luadb
2•thunderbong•1h ago•0 comments