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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/

TikTok users' cameras hacked with open weight model

https://www.washingtonpost.com/technology/2026/09/18/cybersecurity-experts-say-free-ai-software-i...
1•ejcho•1m ago•0 comments

Copaganda, Punishment, and Policing in the United States

https://www.teenvogue.com/story/alec-karakatsanis-copaganda-policing
1•paimapi•1m ago•0 comments

Trump Calls AI Fears a Hoax. Inside the White House, the Debate Is More Complex

https://www.nytimes.com/2026/09/18/us/politics/trump-ai-safety-anthropic-openai-china.html
1•mikhael•3m ago•0 comments

Show HN: Signal – Audience Intelligence for Film, TV and Game Releases

https://signal.skipthecritics.com
1•LevelTenMedia•3m ago•0 comments

Gavin Newsom Wants AI Kill Switch to Boost CA AI Safety

https://www.bloomberg.com/news/articles/2026-09-18/newsom-pitches-ai-kill-switch-extra-oversight-...
2•donsupreme•3m ago•0 comments

At Dreamforce business leaders say last year's models are enough

https://www.cnbc.com/2026/09/18/at-dreamforce-business-leaders-say-older-ai-models-are-enough.html
1•pieterk•4m ago•0 comments

Show HN: Jeff – A read-only CLI for semantic code review using Jev

https://github.com/Alurith/jeff
1•imalessandro•5m ago•0 comments

Conway's Law and Programming Languages

https://danieltan.weblog.lol/2026/09/conways-law-and-programming-languages
1•thunderbong•6m ago•0 comments

Jev as a Primitive Feature of Ruby

https://github.com/innocentdiaz/typesafe_ruby
1•idz•8m ago•0 comments

The Stoic Library

https://thestoiclibrary.com
1•dp-hackernews•8m ago•0 comments

EA Safety

https://contraptions.venkateshrao.com/p/ea-safety
2•Arubis•9m ago•1 comments

Character.ai's CEO Karandeep Anand Is Joining Disney

https://blog.character.ai/the-next-chapter-of-entertainment-and-fandom/
1•Palmik•9m ago•0 comments

The case for a robot tax to redistribute wealth

https://restofworld.org/2026/robot-tax-ai-wealth-redistribution/
1•thm•9m ago•0 comments

Asus Ascent QN10, first mini PC powered by Qualcomm 18-core ARMv9 CPU

https://www.cnx-software.com/2026/09/18/asus-ascent-qn10-mini-pc-is-powered-by-qualcomm-snapdrago...
1•giuliomagnifico•10m ago•0 comments

How China is preparing for the risk of AI escaping human control

https://www.reuters.com/legal/litigation/how-china-is-preparing-risk-ai-escaping-human-control-20...
1•verdverm•10m ago•0 comments

Singapore is paying people to read books – can it fix the reading crisis?

https://www.theguardian.com/books/2026/sep/18/singapore-paid-reading-scheme
2•CrypticShift•10m ago•0 comments

ReallyFree

https://reallyfree.app/
1•imagineblueeyes•11m ago•0 comments

Show HN: Knucklebones

https://apps.apple.com/us/app/knucklebones/id6761620815
1•selimonder•12m ago•0 comments

Internet Phone Book

https://internetphonebook.net/
2•ibobev•14m ago•0 comments

Jev might be Qwen finetune

https://nitter.click/egorgorv/status/2100887757983990218
1•E-Reverance•14m ago•0 comments

Benchmarking Wild vs. Mold

https://davidlattimore.github.io/posts/2026/09/18/benchmarking-wild-vs-mold.html
1•ibobev•15m ago•0 comments

Product Roadmaps: How the Best Product Teams Plan for Uncertainty

https://www.producttalk.org/product-roadmaps/
1•bucket2015•15m ago•0 comments

Humanoid Robot Regulations have begun

https://www.youtube.com/watch?v=qoZ_EjWJtes
1•artur_makly•16m ago•0 comments

Turns out that "HDMI 2.1" ports don't need to support HDMI 2.1 features

https://arstechnica.com/gadgets/2021/12/the-hdmi-forum-follows-the-usb-if-in-using-new-version-nu...
2•haunter•20m ago•0 comments

Disney Hires Its First CTO: Karandeep Anand, Former CEO of AI Chatbot Startup

https://variety.com/2026/biz/news/disney-cto-karandeep-anand-character-ai-1236866528/
3•chauzer•21m ago•0 comments

Show HN: Keydris, Sudo for AI Agents

https://www.youtube.com/watch?v=Ouqwx7-gGYw
2•Osman_728•22m ago•0 comments

Better Than O1 Visa?

https://www.uscis.gov/working-in-the-united-states/international-entrepreneur-rule
1•namanbajpai•23m ago•0 comments

Claude Code Projects

https://claude.com/blog/projects-redesigned
1•smoser•23m ago•0 comments

US Military had close call after using AI for hallucinated intelligence report

https://www.cnn.com/2026/09/18/politics/us-military-ai-false-intelligence-china-ship
8•realsarm•24m ago•3 comments

Scam Spotting with ChatGPT

https://scam-spotting-with-chatgpt.openai.chatgpt.site/
1•armcat•25m ago•0 comments