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Bloom's two sigma problem (2020)

https://nintil.com/bloom-sigma
8•Tomte•12mo ago

Comments

trane_project•12mo 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/

RuView – WiFi DensePose: See Through Walls with WiFi (Scam Alert)

https://github.com/deletexiumu/wifi-densepose
1•reconnecting•5m ago•0 comments

Open Accountants

https://www.openaccountants.com/
1•openaccountants•6m ago•1 comments

A nightmare experience: Trying to open a bank account with Bank of America

https://www.maroonmed.com/a-nightmare-experience-trying-to-open-a-bank-account-with-bank-of-america/
1•erdoc69•8m ago•0 comments

Trump pulls back AI order over fears it could slow US technology

https://apnews.com/article/trump-ai-executive-order-ee318f35acc8a2c43e47f3ebf26cb459
1•isaacfrond•10m ago•0 comments

Bytewax: Stream processing library built using Python and Rust

https://github.com/bytewax/bytewax
1•rzk•13m ago•0 comments

Odroid H-series is going 10 GbE (ODROID-H5)

https://www.hardkernel.com/shop/odroid-h5/
2•chr•14m ago•0 comments

Deepfakes Tore a High School Apart

https://www.404media.co/radnor-high-school-pennsylvania-ai-deepfakes-child-sexual-abuse-material/
6•Brajeshwar•15m ago•0 comments

Moss: Self-Evolution Through Source-Level Rewriting in Autonomous Agent Systems

https://arxiv.org/abs/2605.22794
1•Timofeibu•19m ago•0 comments

UniFi 5G Backup

https://blog.ui.com/article/introducing-unifi-5g-backup
1•jpalomaki•21m ago•1 comments

The Writer Who Dared Criticize Silicon Valley

https://www.nytimes.com/2025/11/27/technology/writer-silicon-valley-criticism.html
2•rbanffy•23m ago•0 comments

Show HN: I threw away my analytics dashboard and replaced it with 42 MCP tools

1•hholen•25m ago•0 comments

CodeAlta an efficient agentic AI coding CLI assistant coded in C#/.NET

https://codealta.github.io/
1•xoofx•25m ago•0 comments

Cloning a voice at 48 kHz with VoxCPM2 in ElevenLabs API quality

https://soniqo.audio/blog/voxcpm2-voice-cloning
1•ipotapov•28m ago•0 comments

Ask HN: What are you Building? (May 22)

1•Armonsrer•30m ago•1 comments

"A Digital Prison": Surveillance and the suppression of civil society in Serbia

https://securitylab.amnesty.org/latest/2024/12/a-digital-prison-surveillance-and-the-suppression-...
1•Cider9986•34m ago•0 comments

Apple seeks Supreme Court review for Epic Games case

https://9to5mac.com/2026/05/21/apple-seeks-supreme-court-review-of-contempt-finding-and-injunctio...
2•alberto-m•35m ago•0 comments

Spec-Driven Development: Everything Old Is New Again

https://superluminar.io/2026/04/28/spec-driven-development-everything-old-is-new-again/
1•schnipseljagd•38m ago•0 comments

Sentry.io Is Down?

https://sentry.io/auth/login/
2•gianpaj•39m ago•1 comments

I2C Notes

https://rana-emaan.com/read/notes/i2c/
1•signa11•40m ago•0 comments

Cisco used AI to write security incident reports, with mixed results

https://www.theregister.com/security/2026/05/22/cisco-used-ai-to-write-security-incident-reports-...
4•01-_-•48m ago•0 comments

AI progress creates more work for humans, not less

https://every.to/p/after-automation
1•trueduke•48m ago•0 comments

The Inheritance of Survival

https://brandypigeon.substack.com/p/the-inheritance-of-survival
1•rendx•49m ago•0 comments

Acrisure layoffs to number 2,250, attributed to AI advancements

https://www.detroitnews.com/story/business/2026/05/20/grand-rapids-acrisure-to-cut-2250-jobs-cite...
1•01-_-•49m ago•0 comments

You can't whisper at an AI agent

https://stripe.dev/blog/ai-steering-experiments
1•vinhnx•50m ago•0 comments

Matching Principle: Adversarial, augmentation, etc. are estimators of one matrix

https://arxiv.org/abs/2605.22800
2•visark_42•52m ago•0 comments

Roundtables: Can AI Learn to Understand the World?

https://www.technologyreview.com/2026/05/21/1137756/roundtables-can-ai-learn-to-understand-the-wo...
2•joozio•58m ago•0 comments

Are no-frills utility knives the underrated sweet spot for EDC?

https://www.paragon-knives.com/
1•bgzlsxaz•58m ago•0 comments

Technology Today Influence Us

https://negativestarinnovators.com/
1•pizzly•59m ago•1 comments

Pokélike

https://pokelike.xyz/
4•Areibman•1h ago•0 comments

The humiliation of finding secret Israeli bases in Iraq

https://responsiblestatecraft.org/israeli-bases-iraq/
1•KoftaBob•1h ago•0 comments