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Bloom's two sigma problem (2020)

https://nintil.com/bloom-sigma
8•Tomte•11mo ago

Comments

trane_project•11mo 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/

Using the scientific method to validate a $1.6T market hypothesis

1•odogwu200•10s ago•0 comments

Resend overtook SendGrid+Mailgun+Postmark+Mailjet combined on indie launches

https://stackscope.dev/blog/state-of-indie-launches-april-2026
1•stackscope•1m ago•0 comments

Amsterdam bans public adverts for meat and fossil fuels

https://www.bbc.com/news/articles/c9wejdekpwyo
1•mr_toad•4m ago•0 comments

SoftBank plans to list new AI and robotics company in the US

https://www.ft.com/content/55c7d99c-7e68-453c-b784-33d6b9838e16
1•JumpCrisscross•5m ago•0 comments

Circuitiny: AI-assisted circuit design tool for hobbyists

https://github.com/mfranzon/circuitiny
1•mfranzon•5m ago•0 comments

Redis new Array type PR and request for feedbacks

https://github.com/redis/redis/pull/15162
1•antirez•5m ago•0 comments

Heat pump sales jump as consumers recoil at high fossil fuel prices

https://www.ft.com/content/571e9cc4-1b32-49ef-bc82-e550e9404d8f
1•JumpCrisscross•6m ago•0 comments

The A.I. Industry Is Booming. When Will It Make Money?

https://www.newyorker.com/news/the-financial-page/the-ai-industry-is-booming-when-will-it-actuall...
1•geox•7m ago•0 comments

Why the Ideal Magnet Remains Out of Reach

https://spectrum.ieee.org/rare-earth-free-magnets
1•pseudolus•13m ago•0 comments

Iarpa Trojans in Artificial Intelligence

https://arxiv.org/abs/2602.07152
1•hlynurd•13m ago•0 comments

Advice I WISH I'D BEEN Told (1999)

http://web.archive.org/web/20090502012411/http://wwwstage.valpo.edu/english/vpr/mcdonaldessay.html
1•downbad_•14m ago•1 comments

Family data reveal two genetic paths to childhood depression and anxiety

https://medicalxpress.com/news/2026-04-family-reveal-genetic-paths-childhood.html
1•pseudolus•17m ago•0 comments

More than double the gas stuck in Hormuz is wasted each year, IEA says

https://www.ft.com/content/fdc6aa8a-538a-4f1d-b1b9-a0ce0cd2a5ac
2•JumpCrisscross•19m ago•0 comments

Kant: Was Ist Aufklärung?

https://www.hs-augsburg.de/~harsch/germanica/Chronologie/18Jh/Kant/kan_aufk.html
2•doener•21m ago•1 comments

Show HN: Valk Guard– Catches dangerous SQL hidden inside your ORM,no DB required

https://github.com/ValkDB/valk-guard
1•valkdb•22m ago•0 comments

Why do so many people use AI to cheat at fun?

https://www.thecut.com/article/would-you-use-chatgpt-to-cheat-at-hobbies.html
1•the-mitr•23m ago•0 comments

Reviving the internet radio in my 12-year-old Denon

https://victorantos.com/posts/i-bought-a-denon-for-my-wedding-then-i-vibe-coded-its-radio-back/
2•victorbuilds•24m ago•0 comments

GitHub (But It's a EU Project)

https://pinolallo.com/html/eurohub-demo.html
4•HipstaJules•26m ago•0 comments

Shoppers falsely identified by facial recognition struggle to clear their names

https://www.theguardian.com/technology/2026/may/03/guilty-until-proven-innocent-shoppers-falsely-...
1•rwmj•27m ago•0 comments

AI-Generated Code Has No Author – Ossature Blog

https://ossature.dev/blog/ai-generated-code-has-no-author/
1•lifeisstillgood•27m ago•0 comments

United flight collides with truck and light pole as it lands at Newark airport

https://www.cnn.com/2026/05/03/us/united-airlines-newark-truck-streetlight
3•blendergeek•28m ago•0 comments

The Arena of Seperation

https://drive.google.com/drive/folders/1LhbVuK--98o6UsyiCzTjQ3yxQb3VjWce?usp=sharing
1•thepppanda•29m ago•1 comments

10K+ Satellites in Space

https://tech.marksblogg.com/gcat-satellite-database.html
1•marklit•29m ago•1 comments

Agent Skill Pack: Market and Marketing and Monetization (9 and 2 Skills)

https://8253360822677.gumroad.com/l/beamer-agent-skills-market-marketing-monetization
1•davidvartanian•30m ago•0 comments

Ouster's new color Lidar is coming to replace cameras

https://techcrunch.com/2026/05/04/ousters-new-color-lidar-is-coming-to-replace-cameras/
1•jacobwiseberg•32m ago•0 comments

The wild life and brutal death of a crypto hustler

https://thelogic.co/news/the-big-read/kevin-mirshahi-bitcoin-cryptocurrency-influencer-murder/
2•pseudolus•34m ago•0 comments

Speed of Implementation and the Law of Shitty Click Throughs

https://taylorpearson.me/ctr/
1•rzk•34m ago•0 comments

May the Fourth Be with You

2•emreb•35m ago•0 comments

Show HN: Pictero.com – mostly browser based image toolbox

https://www.pictero.com/
1•y42•36m ago•0 comments

Prototype Fund is a funding program for innovative Open Source Software

https://www.prototypefund.de/en/
1•snowpid•39m ago•0 comments