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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/

My hands don't work, so I made a free local dictation program for Mac: YapToText

https://github.com/ryleighnewman/YapToText
1•ryleighnewman•31s ago•0 comments

Show HN: Ultracapitalism, a Company-Building Autobattler

https://chromagolem.itch.io/ultracapitalism
1•ChromaGolem•42s ago•0 comments

GPT-6 Astra Generally Available

https://twitter.com/OpenAI/status/2095968413646737608
2•samyok•2m ago•0 comments

How to Create a Tor Exit Node

https://madpsy.uk/how-to-create-a-tor-exit-node/
1•Eridanus2•2m ago•0 comments

Search NASA's Portfolio of Technologies

https://techport.nasa.gov/
1•o4c•4m ago•0 comments

An open DNS recursive service for free security and high privacy

https://quad9.net/
1•mooreds•5m ago•0 comments

The UV index is not the warm sensation of sunlight on bare skin

https://blog.asciitweezers.com/the-uv-index-is-not-the-warm-sensation-of-sunlight-on-bare-skin/
2•evakhoury•6m ago•0 comments

$220k in 5 days – the outbid.lol interview

https://www.highsignal.io/220k-in-5-days-the-outbid-lol-interview/
2•mooreds•6m ago•0 comments

Bin Laden's "Letter to America"

https://ceu.su/letter_to_america.html
3•kome•8m ago•0 comments

Searching for the Best Silicone USB Cable

https://www.frankchiarulli.com/blog/best-silicone-usb-cable/
1•evakhoury•12m ago•0 comments

RSA-260 has been cracked

https://twitter.com/penlume/status/2095372672356212876
3•LopRabbit•13m ago•1 comments

Using a PC sound card to receive VLF radio signals (2015) [video]

https://www.youtube.com/watch?v=L2W1x6Rb9hI
1•joebig•14m ago•0 comments

Israel water authority dumped toxins into Mediterranean to kill algae bloom

https://twitter.com/MatanHodorov/status/2095507064881623111
2•newspaper1•15m ago•1 comments

Intelligence Community Comprehensive National Cybersec Initiative Datacenter

https://en.wikipedia.org/wiki/Utah_Data_Center
1•Bluestein•15m ago•0 comments

US Senator demands NSA update VPN guidance over foreign spying risks

https://www.techradar.com/vpn/vpn-privacy-security/us-senator-demands-nsa-update-vpn-guidance-ove...
3•devonnull•17m ago•0 comments

US Military turns off ad trackers on devices amid Middle East targeting reports

https://www.reuters.com/business/media-telecom/us-military-turns-off-ad-trackers-devices-amid-mid...
2•TechTechTech•21m ago•1 comments

Code Review Tool

https://github.com/larsmw/codevalidator
1•larsmw•24m ago•0 comments

Sudden Unexpected Death in the Pfizer BNT162b2 Trial

https://esmed.org/MRA/mra/article/view/7810/99193550508
1•blumomo•25m ago•0 comments

Can AI design circuit boards yet?

https://eebench.org/blog/can-ai-design-circuit-boards-yet/
23•iopapa•30m ago•10 comments

Character Development: A story about subtitles, cinema, and the Satos (2022)

https://media.typography.or.jp/typographicst/1194
2•1317•32m ago•0 comments

GPT-6-Astra Generally Available on Vercel's AI Gateway

https://twitter.com/vercel_dev/status/2095957372850389186
2•samyok•38m ago•0 comments

GotChat – Apache 2.0 LLM chat with installable full-stacked plugins

https://github.com/gotchat-ai/foundry
1•gotchat•38m ago•0 comments

Genetic diversity is a predictor of mortality in humans

https://link.springer.com/article/10.1186/s12863-014-0159-7
3•consumer451•39m ago•0 comments

Driftwood Deli to Offer Poutine, Steve Cites Canadian Solidarity

1•b112•42m ago•0 comments

Saloni's Guide to Data Visualization

https://www.scientificdiscovery.dev/p/salonis-guide-to-data-visualization
1•Michelangelo11•42m ago•0 comments

Ask HN: What Is AGI?

2•mathieu_aithos•44m ago•3 comments

Boom Supersonic's SuperPower Jet Engine Is Real [video]

https://www.youtube.com/watch?v=vPOUfcpOSDg
1•sbuttgereit•45m ago•0 comments

UN tells the world: Stop making Africa look small

https://news.un.org/en/story/2026/09/1168284
2•ChrisArchitect•47m ago•2 comments

More Targets of the OpenAI Agent Swarm

https://fi-le.net/vanderbilt/
1•fi-le•48m ago•0 comments

No Silver Bullets

https://writing.jan.io/2026/09/04/no-silver-bullets.html
1•gpi•48m ago•0 comments