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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/

The committee problem: why B2B demos die after the form

https://blog.skipup.ai/buying-committee-demo-scheduling-problem/
1•bushido•14s ago•0 comments

Show HN: Seedance2.live – One place to try many AI image and video models

https://seedance2.live
1•yuni_aigc•4m ago•1 comments

Show HN: Grok Video 10s – Grok AI video generation and creator contest

https://grok-video.org/
2•thenextechtrade•4m ago•0 comments

Grumpy Julio plays with CLI coding agents

https://jmmv.dev/2026/02/one-week-with-claude-code.html
1•todsacerdoti•5m ago•0 comments

The Software Business

https://ivanbercovich.com/2026/the-software-business
1•jimmythecook•9m ago•0 comments

Monopoly Round-Up: The $2T Collapse of Terrible Software Companies

https://www.thebignewsletter.com/p/monopoly-round-up-the-2-trillion
1•walterbell•10m ago•0 comments

Show HN: HelixNotes – Local-first Markdown notes app built with Rust and Tauri

https://helixnotes.com
2•ArkHost•12m ago•0 comments

Security audit of Browser Use: prompt injection, credential exfil, domain bypass

https://arxiv.org/abs/2505.13076
1•tiny-automates•13m ago•1 comments

Infinite Terrain

https://mesq.me/infinite-terrain/
1•memalign•14m ago•1 comments

"What Questions Do You Have for Me?": Acing the Reverse Interview

https://robbygrodin.substack.com/p/what-questions-do-you-have-for-me
1•code_pig•14m ago•0 comments

Show HN: SplitFXM – Multi-Dimensional Computational Library for Physics-Aware AI

https://splitfxm.com
1•gpavanb•17m ago•0 comments

Tired of sharing small files via Google Drive or Dropbox just to manage access

https://www.styloshare.com/
1•stylofront•18m ago•1 comments

Scientists Send Secure Quantum Keys over 62Mi of Fiber–Without Trusted Devices

https://singularityhub.com/2026/02/09/scientists-send-secure-quantum-keys-over-62-miles-of-fiber-...
2•WaitWaitWha•20m ago•0 comments

Younghoon Kim (claims highest IQ of 276) speaks about Jesus

https://www.youtube.com/watch?v=B55knDYYWxM
1•quasibyte•20m ago•0 comments

CIA announces new acquisition framework to speed tech adoption

https://www.nextgov.com/acquisition/2026/02/cia-announces-new-acquisition-framework-speed-tech-ad...
1•WaitWaitWha•23m ago•0 comments

SBX Avalanche Survival System

https://www.safeback.no/sbx
1•dabinat•24m ago•0 comments

De-Enshittify Windows 11: OneDrive

https://www.thurrott.com/windows/windows-11/332529/de-enshittify-windows-11-onedrive
4•tech234a•27m ago•0 comments

Gradient.horse

https://gradient.horse
2•microflash•28m ago•0 comments

Claude /fast mode consumes money fast

1•diavelguru•33m ago•0 comments

CLIProxyAPIPlus – use antigravity, Gemini CLI, & more with Claude Code / etc.

https://github.com/router-for-me/CLIProxyAPIPlus
1•radio879•34m ago•1 comments

Electric Cars Are Making It Easier to Breathe, Study Finds

https://www.thedrive.com/news/electric-cars-are-making-it-easier-to-breath-study
2•m463•35m ago•0 comments

FDA Takes Steps to Ease Path for Non-Petroleum Food Colors

https://www.jdsupra.com/legalnews/fda-takes-steps-to-ease-path-for-non-1066153/
1•WaitWaitWha•40m ago•0 comments

Show HN: A daily news app that helps kids build reading and thinking skills

https://www.zaplearner.com/trial
2•farstill•41m ago•0 comments

Why post-Soviet nostalgia is rational: death rates, shock therapy, and elites

https://eventuallymarching.substack.com/p/russian-novels-dont-teach-you-how
1•mridlll•43m ago•0 comments

An ancient seafloor turned Arkansas into 'Sharkansas' a shark fossil hotspot

https://phys.org/news/2026-02-ancient-seafloor-arkansas-sharkansas-shark.html
2•RickJWagner•44m ago•0 comments

I built a Pokémon TCG Pocket card database that actually has useful filters

https://pocketcards.net/database
2•bat0x01•45m ago•0 comments

Living in the Inflection Point

https://brittanyellich.com/living-in-the-inflection-point/
2•overcommitted•47m ago•0 comments

Why did fabless eat semiconductors?

https://siliconimist.substack.com/p/thoughts-on-why-fabless-ate-semis
1•johncole•47m ago•0 comments

Show HN: Kore – Stack based language where compiler is the reward function

https://github.com/konf-dev/kore
1•processorx•48m ago•0 comments

Zero Memory Widgets [pdf]

https://perso.univ-lyon1.fr/thierry.excoffier/ZMW/rr_2003_03_11.pdf
1•PKop•50m ago•0 comments