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Bloom's two sigma problem (2020)

https://nintil.com/bloom-sigma
8•Tomte•10mo ago

Comments

trane_project•10mo 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/

The GNU libc atanh is correctly rounded

https://inria.hal.science/hal-05591661
1•matt_d•3m ago•0 comments

Google Arts and Culture

https://artsandculture.google.com/
1•satvikpendem•10m ago•0 comments

How to recover from a Git force push

https://gist.github.com/tomj/758d16b7f8e474035db72688663bb3cb
1•nstj•10m ago•0 comments

Adam Tooze: Electrostates, Petrostates and the New Cold War [video]

https://www.youtube.com/watch?v=gLnxzkiB-GI
1•verdverm•12m ago•0 comments

The Legend of Meir Berliner

https://www.serargentino.com/en/people/urban-legends/the-legend-of-meir-berliner
1•wslh•12m ago•0 comments

Social media age limits: Well intentioned but ineffective?

https://www.dw.com/en/do-social-media-age-limits-work-tiktok-instagram-cyberbullying-depression-k...
2•pseudolus•12m ago•0 comments

OpenAI's $852B valuation faces investor scrutiny amid strategy shift, FT reports

https://www.reuters.com/legal/transactional/openai-investors-question-852-billion-valuation-strat...
5•abdelhousni•15m ago•0 comments

The Many Faces of Claude

https://eriskii.net/projects/claude-faces
1•TheAceOfHearts•18m ago•0 comments

Ask HN: When you get a SAST finding, what's harder

2•kirumachi•18m ago•1 comments

Sony killing features for antenna, set-top box users of Bravia smart TVs in May

https://arstechnica.com/gadgets/2026/04/sony-killing-features-for-antenna-set-top-box-users-of-br...
1•canucker2016•19m ago•0 comments

"The Last Airbender" movie leaked 9 months before release date

https://nofilmschool.com/full-length-avatar-movie-leaks
1•tennysont•20m ago•2 comments

What do you want out of a coding monospace font?

1•d0able•20m ago•1 comments

The Mythos Threshold

https://joereis.substack.com/p/the-mythos-threshold
1•gmays•30m ago•0 comments

We broke the O(2^N) barrier to compute AI consciousness (Phi)

https://github.com/InductivityAI/Phi-Scanner-1/
1•Robin_De•31m ago•0 comments

Vibe Coding doesn't democratize software engineering – it democratizes liability

https://widal.substack.com/p/vibe-coding-doesnt-democratize-software
2•niwid•36m ago•0 comments

Europe should regulate Big Tech instead of banning kids from social media

https://www.politico.eu/article/europe-should-stand-up-to-big-tech-instead-of-imposing-social-med...
2•pabs3•40m ago•2 comments

An open source CMS/Indexer for TCGs

https://github.com/maelswarm/tcg
1•mnmnmaaa•42m ago•0 comments

The FCC just saved Netgear from its router ban for no obvious reason

https://www.theverge.com/tech/911888/netgear-router-ban-conditional-approval
23•HotGarbage•44m ago•6 comments

Quetta Browser: Chromium browser for Android, iOS supporting Chrome extensions

https://www.quetta.net/
1•thunderbong•44m ago•0 comments

Show HN: An edge MCP file system with a 50ms undo button for AI agents

https://mcp.undisk.app
2•adlkiarash•45m ago•2 comments

Anthropic Revises Claude Enterprise Pricing Structure

https://letsdatascience.com/news/anthropic-revises-claude-enterprise-pricing-structure-f3022a32
2•handfuloflight•46m ago•0 comments

Show HN: AI connects your health data after a supplement nearly killed me racing

https://vitalityaihealth.com
2•Kevin_VAI•56m ago•1 comments

Muster – Multi-agent product team for Claude Code, built on <.md> files

https://github.com/sandhuka/muster-ai
2•kanwarsandhu•59m ago•0 comments

Elon Musk's xAI Sued by NAACP over Memphis Data Center

https://www.wsj.com/tech/elon-musks-xai-sued-by-naacp-over-memphis-data-center-5c4e793d
1•fortran77•1h ago•1 comments

Large or bright satellite constellations: Effects on observations

https://arxiv.org/abs/2604.09427
2•CharlesW•1h ago•0 comments

Show HN: Terminal-Wrench, a dataset of 331 realistic hackable environments

https://github.com/few-sh/terminal-wrench
6•neversupervised•1h ago•1 comments

Nvidia should be 'shaking in their boots' as quantum computing battles AI GPUs

https://finance.yahoo.com/news/d-wave-ceo-says-nvidia-should-be-shaking-in-their-boots-as-quantum...
7•mgh2•1h ago•2 comments

Authorization for LLM Tool Schemas: Formal Model with Noninterference Guarantees [pdf]

https://raw.githubusercontent.com/AndyGauge/andygauge.github.io/master/publication/noninterferenc...
2•andygauge•1h ago•0 comments

Speech-Driven Spatial Externalization for Co-Located Collaboration in AR

https://arxiv.org/abs/2603.20199
1•PaulHoule•1h ago•0 comments

Now Available: WireGuard, Wi‑Fi Direct, OpenRISC, and More

https://www.zephyrproject.org/zephyr-rtos-4-4-now-available-wireguard-wi-fi-direct-openrisc-and-m...
1•rettichschnidi•1h ago•1 comments