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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/

Show HN: Freelang – a direct-to-assembly syscall lang with rad concurrency

https://freelang.dev
1•keepamovin•1m ago•0 comments

Reddit Is Blocking Some Users from Accessing Its Website from Mobile Devices

https://arstechnica.com/information-technology/2026/05/why-reddit-blocked-my-daily-visit-to-its-m...
1•Brajeshwar•2m ago•0 comments

The Programming Language for Agents

https://zerolang.ai/
1•alex_x•4m ago•0 comments

Three's a party: US, China, and now Russia are on the prowl in GEO

https://arstechnica.com/space/2026/05/threes-a-party-us-china-and-now-russia-are-on-the-prowl-in-...
1•rbanffy•5m ago•0 comments

What Software Is Made Of

https://siderea.dreamwidth.org/1219758.html
1•teddyh•6m ago•0 comments

Show HN: Whisper Large V3 Turbo Stream API

https://www.makeform.ai/f/mtwDANdO
1•tamnv•10m ago•0 comments

EV charging station fire caused by remote technician, report finds

https://vancouver.citynews.ca/2026/05/15/ev-charger-fire-caused-u-s/
1•Throwthrowbob•10m ago•0 comments

South Korea says it will pursue all options to avoid Samsung strike

https://www.reuters.com/business/world-at-work/south-korea-says-it-will-pursue-all-options-avoid-...
3•01-_-•13m ago•0 comments

The ultimate female fantasy – A feminist critique of Beauty and the Beast

https://storica.club/blog/beast-was-the-best-part/
8•muge•13m ago•0 comments

Europe Just Unveiled a Serious Rival to SpaceX's Starship

https://scitechdaily.com/europe-just-unveiled-a-serious-rival-to-spacexs-starship/
3•01-_-•14m ago•0 comments

AVX-512

https://en.wikipedia.org/wiki/AVX-512
1•tosh•14m ago•0 comments

Datacenters slurping up so much juice they boosted prices 75%

https://www.theregister.com/on-prem/2026/05/15/datacenters-slurping-juice-help-drive-75-jump-in-p...
1•Bender•16m ago•0 comments

Google users fight for refunds as unauthorized API usage bills soar

https://www.theregister.com/ai-ml/2026/05/13/google-users-fight-for-refunds-as-unauthorized-api-u...
2•Bender•17m ago•0 comments

Is Britain Ungovernable?

https://www.cnn.com/2026/05/16/uk/uk-government-prime-minister-leadership-starmer-ungovernable-la...
2•Bender•22m ago•0 comments

The filesystem is the API (with TigerFS)

https://www.youtube.com/watch?v=RFLk5iLyFG4
1•der_gopher•25m ago•0 comments

Brown vs. Board of Education (May 17th, 1954)

https://en.wikipedia.org/wiki/Brown_v._Board_of_Education
3•simonebrunozzi•28m ago•0 comments

PyPI packages are increasing rapidly

https://rushter.com/blog/pypi-packages/
2•f311a•29m ago•0 comments

Physicists Can't Agree on What Quantum Mechanics Says about Reality

https://www.scientificamerican.com/article/physicists-divided-on-what-quantum-mechanics-says-abou...
2•rramadass•29m ago•0 comments

God Exists. Here Is How Things Work

https://barabeke.substack.com/p/god-exists-here-is-how-things-work
3•barabeke•34m ago•1 comments

Show HN: AutoAlert – Android app that announces UPI payments

https://play.google.com/store/apps/details?id=com.autoalert.upisoundalert&hl=en_US
2•anithakarri001•38m ago•0 comments

Microsoft AI chief gives 18 months for whitecollar work to be automated by AI

https://fortune.com/article/why-microsoft-ai-chief-mustafa-suleyman-predicts-ai-automation-18-mon...
3•RyeCombinator•40m ago•3 comments

Show HN: Gonfire – analyze Claude Code session logs to see how candidates think

1•abr0ahm•40m ago•0 comments

Llama.cpp b9180: MTP support landed

https://github.com/ggml-org/llama.cpp/releases/tag/b9180
1•usagisushi•46m ago•0 comments

Show HN: OpenClaw is just not dangerous enough. I needed something else

https://github.com/kkovacs/kklaw
2•kkovacs•49m ago•0 comments

Optimizing your website for generative AI features on Google Search

https://developers.google.com/search/docs/fundamentals/ai-optimization-guide
2•tjek•50m ago•0 comments

What do you want to ask the online safety minister about social media?

https://www.bbc.com/newsround/articles/ceqp2gxerl4o
1•DropDead•50m ago•0 comments

I Replaced a $460/Month Sales Stack with a $0.41/Day System I Built Myself

https://alanscottencinas.medium.com/i-replaced-a-460-month-sales-stack-with-a-0-41-day-system-i-b...
4•encinas88•51m ago•0 comments

Why birth rates are falling everywhere all at once

https://www.ft.com/content/fba35eca-df3a-4ad6-b42d-eb08eb7c9ad3
1•mmarian•52m ago•1 comments

Before it gets a number – About CVE, CWE and vulnerabilities prevention

https://quodeq.ai/blog/before-the-number/
3•quodeq•57m ago•0 comments

A passage from Homer's Iliad has been discovered inside the an Egyptian mummy

https://www.scientificamerican.com/article/passage-from-homers-iliad-discovered-in-the-abdomen-of...
1•wslh•1h ago•0 comments